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AIPMT 2016

physics

45 Qs

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A person can see clearly object only when they lie between 50 cm and 400 cm from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use, will be :

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A linear aperture whose width is 0.02 cm is placed immediately in front of a lens of focal length 60 cm. The aperture is illuminated normally by a parallel beam of wavelength cm. The distance of the first dark band of the diffraction pattern from the centre of the screen is:

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Electrons of mass m with de-Broglie wavelength fall on the target in an X-rays tube. The cutoff wavelength of the emitted X-rays is

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Photons with energy are incident on a cathode in a photoelectric cell. The maximum energy of emitted photo electrons is . When photons of energy are incident. on , no photoelectrons will reach the anode , if the stopping potential of relative to is :

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If an electron in a hydrogen atom jumps from the 3rd orbit to the 2nd orbit, it emits a photon of wavelength . When it jumps from the 4th orbit to the 3rd orbit, the corresponding wavelength of the photon will be

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The half-life of a radioactive substance is 30 minutes. The time (in minutes) taken between 40% decay of the same radioactive substance is :

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For CE transistor amplifier, the audio signal voltage across the collector resistance of is . If the current amplification factor of the transistor is and the base resistance is , then the input signal voltage is

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The given circuit has two ideal diodes connected as shown in the figure below. The current flowing through the resistance will be

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What is the output Y in the following circuit when all the three inputs A, B, C are first and then ?

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Planck's constant (), speed of light in vacuum () and Newton's gravitational constant () are three fundamental constants. Which of the following combinations of these has the dimension of length?

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Two cars P and Q starts from a point at the same time in a straight line and their positions are represents by and . At what time do the cars have the same velocity?

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In the given figure, m/ represents the total acceleration of a particle moving in the clockwise direction in a circle of radius m at a given instant of time. The speed of the particle is:

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A rigid ball of mass m strikes a rigid wall at and gets reflected without loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be :

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A bullet of mass 10g moving horizontally with a velocity of 400 ms strikes a wooden block of mass 2 kg which is suspended by a light inextensible string of length 5m. As a result, the centre of gravity of the block is found to rise a vertical distance of 10 cm. The speed of the bullet after it emerges out horizontally from the block will be :

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Two identical balls A and B having velocities of 0.5 m/s and -0.3 m/s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

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A particle moves from a point to when a force of is applied. How much work has been done by the force?

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Two rotating bodies and of masses and with moments of inertia and have equal kinetic energy of rotation. If and be their angular momenta respectively, then

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A solid sphere of mass m and radius R is rotating about its diameter. A solid cylinder of the same mass and same radius is also rotating about its geometrical axis with an angular speed twice that of the sphere. The ratio of their kinetic energies of rotation will be

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A light rod of length has two masses and attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is

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Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by which of the following options ?

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A stellite of mass m is orbiting the earth (of radius ) at a height from its surface. The total energy of the stellite in terms of , value of acceleration due to gravity at the earth's surface, is

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A rectangular film of liquid is extended from to . If the work done is 3\times 10^{-4}J$$, the value of the surface tension of the liquid is

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Three liquids of densities and (with ) having the same value of surface tension , rise to the same height in three identical capillaries The angles of contact and obey:-

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Two identical bodies are made of a material for which the heat capacity increase with temperature. One of these is at , while the other one is at . If the two bodies are brought into contact, then assuming no heat loss, the final common temperature is

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A body cools from a temperature to in minutes. The room temperature is . Assume that Newton's law of cooling is applicable. The temperature of the body at the end of next minutes will be

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One mole of an ideal monatomic gas undergoes a process described by the equation constant. The heat capacity of the gas during this process is :

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The temperature inside a refrigerator is and the room temperature is . The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

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A given sample of an ideal gas occupies a volume V at a pressure P and absolute temperature T. The mass of each molecule of the gas is m. which of the following gives the density of the gas?

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A body of mass is attached to the lower end of a spring whose upper end is fixed. The spring has negligible mass. When the mass is slightly pulled down and released, it oscillates with a time period of . when the mass m is increased by kg the time period of oscillations becomes . Then value of in kg is

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The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe L metre long. The length of the open pipe will be

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Three sound waves of equal amplitudes have frequencies . They superimpose to give beats. The number of beats produced per second will be

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An electric dipole is placed at an angle of with an electric field intensity . It experiences a torque equal to The charge on the dipole, if the dipole length is 2 cm, is :

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A parallel-plate capacitor of area A, plate separation d and capacitance C is filled with four dielectric materials having dielectric constants and as shown in the figure below. If a single dielectric material is to be used to have the same capacitance C in this capacitor, then its dielectric constant k is given by

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The potential difference between the points A and B in the given figure is.

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A filament bulb is to be used in a main supply. When a resistance is connected in series, it works perfectly and the bulb consumes . The value of is. 

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A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic filed at the centre of the loop is B. It is them bent into circular coil of n turns. The magnetic field at the centre of this cold of n turns will be.

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A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. the energy required to rotate it by is , Now the torque required to keep the magnet in this new position is.

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An electron is moving in a circular path under the influence of a transverse magnetic field  of . If the value of e/m is C/kgg. the frequency of revolution of the electron is.

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Which of the following combination should be selected for better turning of an L.C.R circuit used for communication?

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A uniform magnetic field is restricted within a region of radius . The magnetic field changes with time at a rate . Loop of radius enclose the region and loop of radius is outside the region of magnetic field as shown in the figure below. Then the . generated is :

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The potential differences of the resistance, the capacitor and the inductor are and respectively in an   circuit. The power factor of the circuit is

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A resistance and a capacitor of resistance are connected in series a source. when the capacitor is 50% charged, the value of the displacement current is.

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Two identical glass () lenses of focal length f each keeps in contact. The space between the two lenses is filled with water (). The focal length of the combination is.

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An air bubble in a glass with refractive index (near normal incidence) i.e. deep when viewed from one surface and deep when viewed from the opposite face. The thickness(in ) of the is.

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The interference pattern is  obtained with two coherent light source of intensity ratio n. In the interference pattern, the ratio will be
 

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Chemistry

45 Qs

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Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

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Which of the following pairs of d-orbitals will have electron density along the axes?

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The correct geometry and hybridization for are :

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Among the following, which one is a wrong statement?

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The correct increasing order of trans-effect of the following species is:

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Which one of the following statements related to lanthanons is incorrect?

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Jahn-Teller effect is not observed in high spin complexes of :

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Which of the following can be used as the halide component for Friedel-Crafts reaction?

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In which of the following molecules, all atoms are coplanar?

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Which one of the following structure represents nylon-6,6 polymer?

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In Pyrrole the electron density is maximum on:

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Which of the following compounds shall not produce propene by reaction with followed by elimination or direct only elimination reaction?

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Which one of the following nitro-compounds does not react with nitrous acid?

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The central dogma of molecular genetics states that genetic information flows from :

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The correct order of name of four aldoses with configuration given below respectively is :

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In the given reaction the product P is :

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A given nitrogen-containing aromatic compound reacts with , followed by to give an unstable compound . , on treatment with phenol, forms a beautiful coloured compound with the molecular formula . The structure of compound is:

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Consider the reaction, .
This reaction will be the fastest in :

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The correct structure of the product A formed in the reaction

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Which among the given molecules can exhibit tautomerism?

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The correct order of strength of the carboxylic acids is :

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The compound that will react most readily with gaseous bromine has the formula is:

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Which one of the following compound shows the presence of intramolecular hydrogen bond?

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The molar conductivity of a 0.5 mol/dm solution of with electrolytic conductivity of at 298 K is :

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The decomposition of phosphine on tungsten at low pressure is a first-order reaction. It is because the:

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The coagulation values in millimoles per litre of the electrolytes used for the coagulation of are given below:

I.          II.         III.   

The correct order of their coagulating power is :

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During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is:

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How many electrons can fit in the orbital for which and ?

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For a sample of perfect gas, when its pressure is changed isothermally from to , the entropy change is given by:

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The van't Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is :

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What is the percentage of pyridine that forms pyridinium ion in a 0.10 M aqueous pyridine solution for )?

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In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion and fluoride ion are:

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If the for a given reaction has a negative value, then which of the following gives the correct relationships for the values of and ?

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Which one of the following is incorrect for ideal solution?

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The solubility of AgCl(s) with solubility product in 0.1 M NaCl solution would be :

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Suppose the elements X and Y combine to form two compounds and . When 0.1 mole of weighs 10 g and 0.05 mole of weighs 9 g, the atomic weights of X and Y are :

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The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is :
(charge on an electron  is :

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Boric acid is an acid because its molecule:

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is soluble in  only in presence of . It is due to the formation of :

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Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because :

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The suspension of slaked lime in water is known as :

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The hybridizations of atomic orbitals of nitrogen in and respectively are :

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Which of the following fluoro-compounds is most likely to behave as a Lewis base?

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Which of the following pairs of ions are isoelectronic and isostructural?

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In context with beryllium, which one of the following statements is incorrect?

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Biology

89 Qs

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Which one of the following generates new genetic combinations leading to variation?

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Match Column-I with Column-II and select the correct option using the codes given below.
Column - IColumn - II
(a) Pistils fused together(i) Gametogenesis
(b) Formation of gametes(ii) Pistillate
(c) Hyphae of higher ascomycetes(iii) Syncarpous
(d) Unisexual female flower(iv) Dikaryotic

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In majority of angiosperms

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Pollination in water hyacinth and water lily is brought about by the agency of

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The ovule of an angiosperm is technically equivalent to

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Taylor conducted the experiments to semiconservative mode of chromosome replication on

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The mechanism that causes a gene to move from one linkage group to another is called

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The equivalent of a structural gene is

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A true breeding plant is 

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Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria?

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Stirred-tank bioreactors have been designed for

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A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using

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Which of the following is not a component of downstream processing?

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Which of the following restrictions enzymes produces blunt ends?

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Which kind of therapy was given in 1990 to a four-year-old girl with adenosine deaminase (ADA) deficiency? 

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How many hot spots of biodiversity in the world have been identified till date by Norman Myers?

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The primary producers of the deep hydrothermal vent ecosystem are

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Which of the following is correct for r-selected species?

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If '+' sign is assigned to beneficial interaction, '-' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '-' refers to

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Which of the following is correctly matched?

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Red list contain data or information on

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Which one of the following is incorrect about fungi?

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Methanogens belong to

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Select the wrong statement.

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The label of a herbarium sheet does not carry information on 

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Conifers are adapted to tolerate extreme environmental conditions because of

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Which one of the following statements is wrong?

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The term 'polyadelphous' is related to

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How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?

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Radial symmetry is found in the flowers of

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Free-central placentation is found in

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Cortex is the region found between

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The balloon-shaped structures called tyloses

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A non-proteinaceous enzyme is

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Select the mismatch.

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Select the wrong statement.

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A cell organelle containing hydrolytic enzymes is

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During cell growth, DNA synthesis takes place in

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Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

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A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is pholem sap?

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You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?

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Phytochrome is a 

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Which is essential for the growth of root tip?

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The process which makes major difference between and  plants is

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Which one of the following statements is not correct?

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The part of nephron involved in active reabsorption of sodium is

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Which of the following is hormone releasing IUD?

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Which of the following is incorrect regarding vasectomy?

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Embryo with more than 16 blastomeres formed due to in vitro fertilization is transferred into

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Which of the following depicts the correct pathway of transport of sperms?

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Match Column-I with Column-II and select the correct option using the codes given below:

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Several hormones like hCG, hPL, estrogen, progesterone are produced by

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If a colour-blind man marries a women who is homozygous for normal colour vision, the probability of their son being colour-blind is

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Genetic drift operates in

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In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by

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The chronological order of human evolution from early to the recent is

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Which of the following is the correct sequence of events in the origin of life?
I.Formation of protobionts
II.Synthesis of organic monomers
III.Synthesis of organic polymers
IV.Formation of DNA-based genetic systems

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A molecule that can act as a genetic material, must fulfill the traits given below, except

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DNA-dependent RNA polymerase catalyze transcription on one strand of the DNA which is called the

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Interspecific hybridization is the mating of

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Which of the following is correct regarding AIDS causative agent HIV?

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Among the following edible fishes, which one is a marine fish having rich source of omega- fatty acids?

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Match Column-I with Column-II and select the correct option using the codes given below.

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Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from

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The principle of competitive exclusion was stated by

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Which of the following National Parks is home to the famous musk deer or Hangul? 

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A lake which is rich in organic waste may result in

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Which of the following sets of diseases is caused by bacteria?

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Match Column-I with Column-II for housefly classification and select the correct option using the codes given below.

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Choose the correct statement.

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Study the four statements (A-D) given below and select the two correct ones out of them. The two correct statements are
A.Biological species concept was given by Ernst Mayr.
BPhotoperiod does not affect reproduction in plants.
C.Binomial nomenclature system was given by R. H. Whittaker.
D.In unicellular organisms, reproduction is synonymous with growth.

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In male cockroaches, sperms are stored in which part of the reproductive system?

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Smooth muscles are

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The oxidative phosphorylation is

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Which of the following is the least likely to be involved in stabilizing the three-dimensional folding of most proteins?

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Which of the following describes the given graph correctly?

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When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

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Match the stages of meiosis in list I to their characteristic features in list II and select the correct option using the codes given below.

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Which hormones do stimulate the production of pancreatic juice and bicarbonate?

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The partial pressure of oxygen in the alveoli of the lungs is

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Choose the correct statement.

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Grave's disease is caused due to

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Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.

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Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.

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Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilization.

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Osteoporosis, an age-related disease of skeleton system, may occur due to

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Serum differs from blood in

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Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because

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The posterior pituitary gland is not a 'true' endocrine gland because

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Physics

45 Qs

Related questions

From a disc of radius and mass , a circular hole of diameter , whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre?

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A square loop carrying a current , is placed near and coplanar with a long straight conductor carrying a current , the net force on the loop will be:

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The magnetic susceptibility is negative for:

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A siren emitting a sound of frequency moves away from an observer towards a cliff at a speed of . Then, the frequency of sound that the observer hears in the echo reflected from the cliff is
(Take velocity of sound in air )

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A capacitor of is charged as shown in the diagram. When the switch is turned to position , the percentage of its stored energy dissipated is:

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In a diffraction pattern due to a single slit of width , the first minimum is observed at an angle when light of wavelength is incident on the slit. The first secondary maximum is observed at an angle of :

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At what height from the surface of earth the gravitation potential and the value of are and respectively? Take the radius of earth as .

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Out of the following options which one can be used to produce a propagating electromagnetic wave?

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Two identical charged spheres suspended from a common point by two massless strings of lengths , are initially at a distance apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velocity . Then varies as a function of the distance between the spheres, as:

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A uniform rope of length and mass hangs vertically from a rigid support. A block of mass is attached to the free end of the rope. A transverse pulse of wavelength is produced at the lower end of the rope. The wavelength of the pulse when it reaches the top of the rope is . The ratio  is:

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A refrigerator works between and . It is required to remove calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is: 
(Take )

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An air column, closed at one end and open at the other, resonates with a tuning fork when the smallest length of the column is . The next larger length of the column resonating with the same tuning fork is:

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Consider the junction diode as ideal. The value of current flowing through is

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The charge flowing through a resistance varies with time as , where and are positive constants. The total heat produced in is

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A black body is at a temperature of . The energy of radiation emitted by the body at wavelength is , at wavelength is and that at is . Wien's constant, . Which of the following is correct?

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Coefficient of linear expansion of brass and steel rods are and . Lengths of brass and steel rods are and respectively. If is maintained same at all temperatures, which one of the following relations holds good?

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A npn transistor is connected in common emitter configuration in a given amplifier. A load resistance of is connected in the collector circuit and the voltage drop across it is . If the current amplification factor is and the input resistance of the circuit is , the voltage gain and the power gain of the amplifier will respectively be

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The intensity at the maximum in a Young's double slit experiment is . Distance between two slits is , where is the wavelength of light used in the experiment. What will be the intensity in front of one of the slits on the screen placed at a distance ?

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A uniform circular disc of radius at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of . Its net acceleration in  at the end of is approximately:

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An electron of mass and a photon have same energy . The ratio of de-Broglie wavelength associated with them is:

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A disk and a sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first?

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The angle of incidence for a ray of light at a refracting surface of a prism is . The angle of prism is . If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are

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When an -particle of mass moving with velocity bombards on a heavy nucleus of charge , its distance of closest approach from the nucleus depends on as:

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A particle of mass moves along a circle of radius with a constant tangential acceleration. What is the magnitude of this acceleration if the kinetic energy of the particle becomes equal to by the end of the second revolution after the beginning of the motion?

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The molecules of a given mass of a gas have r.m.s velocity of at and pressure. When the temperature and pressure of the gas are respectively, and , the r.m.s. velocity of its molecules in is:

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A long straight wire of radius carries a steady current . The current is uniformly distribute over its cross-section. The ratio of the magnetic fields and , at radial distances and respectively, from the axis of the wire is:

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A particle moves so that its position vector is given by . Where is a constant. Which of the following is true? 

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What is the minimum velocity with which a body of mass must enter a vertical loop of radius so that it can complete the loop?

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When a metallic surface is illuminate with radiation of wavelength , the stopping potential is V. If the same surface is illuminated with radiation of wavelength , the stopping potential is . The threshold wavelength for the metallic surface is:

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A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then.

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A potentiometer wire is cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at cm and cm from the positive end of the wire in the two cases. The ratio of emf's is:

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A astronomical telescope has objective and eyepiece of focal lengths and respectively. To view an object away from the objective, the lenses must be separated by a distance:

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Two non-mixing liquids of densities and are put in a container. The height of each liquid is . A solid cylinder of length and density is put in this container. The cylinder floats with its axis vertical and length in the denser liquid. The density is equal to

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To get output for the following circuit, the correct choice for the input is.

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A piece of ice falls from a height so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of is [Latent heat of ice is and :

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The ratio of escape velocity at earth to the escape velocity at a planet whose radius and mean density are twice as that of earth is:

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If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is:

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Given the value of Rydberg's constant is , the wave number of the last line of the Balmer's series in hydrogen spectrum will be:

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A body of mass kg begins to move under the action of a time dependent force where and are unit vectors along x and y axis. What power will be developed by the force at the time ?

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An inductor , a capacitor and a resistor are connected in series across a source of emf . The power loss in A.C. circuit is:

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If the velocity of a particle is , where and are constants, then the distance travelled by it between and is

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A long solenoid has turns. When a current of flows through it, the magnetic flux linked with each turn of the solenoid is Wb. The self-inductance of the solenoid is:

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A small signal voltage is applied across an ideal capacitor . Then:

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Match the corresponding entries of column with column . [Where is the magnification produced by the mirror]
Column Column
(A) (a) Convex mirror
(B) (b) Concave mirror
(C) (c) Real image
(D) (d) Virtual image

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A car is moving on a curved road of radius . The road is banked at an angle . The coefficient of friction between the tyres of the car and the road is . The maximum safe velocity on this road is:

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Chemistry

45 Qs

Related questions

Consider the molecules and . Which of the given statements is false?

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In the reaction
X and Y are:

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Among the following, the correct order of acidity is

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The rate of a first-order reaction is at and at after initiation of the reaction. The half-life period of the reaction is :

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Which one of the following characteristic is associated with adsorption?

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In which of the following options the order of arrangement does not goes with the variation of property indicated against it?

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Which of the following statements is false?

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Which of the following statements about hydrogen is incorrect?

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The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha carbon, is :

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and , two nearly insoluble salts, have the same values of at room temperature. Which statement would be true in regards to and ?

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In a protein molecules various amino acids are linked together by:

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Natural rubber has:

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Match items of Column I with the items of Column II and assign the correct code with respect to Column I:
Column IColumn II
(a)Cyanide process(i)Ultrapure
(b)Froth floatation process(ii)Dressing of
(c)Electrolytic reduction(iii)Extraction of
(d)Zone refining(iv)Extraction of
(v)Purification of

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Which one of the following statements is correct when is passed through acidified solution?

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The electronic configuration of (Atomic No. ), (Atomic No. ) and (Atomic No. ) are :

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Two electrons occupying the same orbital are distinguished by :

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When copper is heated with it produces :

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Which of the following reagents would distinguish cis-cyclopenta from the trans-isomer?

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The correct thermodynamic conditions for the spontaneous reaction at all temperatures is:

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Lithium has a  structure. Its density is and its atomic mass is . Calculate the edge length of a unit cell of Lithium metal: ()

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Which one of the following order is correct for the bond dissociation enthalpy of halogen molecules?

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Which of the following is an analgesic?

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Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?

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Consider the nitration of benzene using mixed conc. and . If a large amount of is added to the mixture, the rate of nitration will be:

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Predict the correct order among the following:

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The product obtained as a result of a reaction of nitrogen with is:

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Consider the following liquid - vapour equilibrium Liquid Vapour. Which of the following relations is correct?

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Match the compounds given in Column I with the hybridisation and shape given in column II and mark the correct option :

Column IColumn II
(a) (i) Distorted octahedral
(b) (ii) Square planar
(c) (iii) Pyramidal
(d) (iv) Square pyramidal

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Which of the following has longest bond length? (Free C-O bond length in is .)

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The pressure of required to make the potential of -electrode zero in pure water at is:

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The addition of a catalyst during a chemical reaction alters which of the following quantities?

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The ionic radii of and ions are and . The coordination number of each ion in is:

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Which of the correct statement for the given acids?

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Fog is a collodial solution of:

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Which of the following statements about the composition of the vapour over an ideal molar mixture of benzene and toluene is correct? Assume that the temperature is constant . (Given Vapour Pressure Data at , benzene toluene )

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The correct statement regarding the comparison of staggered and eclipsed conformations of ethane is:

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The reaction can be classified as:

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The product formed by the reaction of an aldehyde with a primary amine is :

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Which of the following biphenyl is optically active?

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For the following reactions:
Which of the following statements is correct?

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At the vapour pressure of a solution of of a solution in water is . If , the boiling point of this solution will be:

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The correct statement regarding RNA and DNA respectively is :

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The correct statement regarding the basicity of arylamines is:

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Which one given below is a non-reducing sugar?

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The pair of electron in the given carbanion, , is present in which of the following orbitals?

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Biology

89 Qs

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Gause's principle of competitive exclusion states that

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The two polypeptides of human insulin linked together by

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The coconut water from tender coconut represents

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Which of the following statements is wrong for viroids?

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Which of the following features is not present in the Phylum-Arthropoda?

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Which of the following most appropriately describes haemophilia?

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Emerson's enhancement effect and Red drop have been instrumental in the discovery of

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In which of the following, all three are macronutrients?

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Name the chronic respiratory disorder caused mainly by cigarette smoking.

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A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called as

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Mitochondria and chloroplast are:

(a) Semi-autonomous organelles.
(b) Formed by a division of pre-existing organelles and they contain DNA but lack protein-synthesizing machinery. 

Which one of the following options is correct?

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In context of amniocentesis, which of the following statement is incorrect?

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In a chloroplast, the highest number of protons are found in

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Photosensitive compound in human eye is made up of

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Spindle fibres attach on to

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Which is the national aquatic animal of India?

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Which of the following is required as inducer(s) for the expression of Lac operon?

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Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?

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Microtubles are the constituents of 

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A complex of ribosomes attached to a single strand of RNA is known as

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Fertilization in humans is practically feasible only if

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Asthma may be attributed to

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The Avena curvature is used for bioassay of

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The standard petal of a papilionaceous corolla is also called as

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Tricarpellary, syncarpous gynoecium is found in flowers of

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One of the major components of cell wall of most fungi is

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Select the incorrect statement.

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In meiosis, crossing over is initiated at

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A tall true breeding  garden pea plant is crossed with a dwarf true breeding garden pea plant. When the plants were selfed the resulting genotypes were in the ratio of

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Which of the following is the most important cause of animals and plants being driven to extinction?

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Which one of the following is a characteristic feature of cropland  ecosystem?

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Changes in GnRH pulse frequency in females is controlled by circulating levels of 

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Which of the following is not a feature of plasmids?

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Which of the following features is not present in Periplaneta americana?

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In higher vertebrates, the immune system can distinguish self-cells and non-self. If the property is lost due to genetic abnormality and it attacks self-cells, then it leads to

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Match the terms in Column I with their description in Column II and choose the correct option:

Column I
Column II
(a) Dominance
(i) Many genes govern a single character
(b) Codominance
(ii) In a heterozygous organism only one allele expresses itself
(c) Pleiotropy
(iii) In a heterozygous organism both alleles expresses themselves fully
(d) Polygenic inheritance
(iv) A single gene influences many characters

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Joint forest management concept was introduced in India during

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Pick out the correct statements.
(a) Haemophilia is a sex-linked recessive disease.
(b) Down's syndrome is due to aneuploidy.
(c) Phenylketonuria is an autosomal recessive gene disorder.
(d) Sickle cell anaemia is an X-linked recessive gene disorder.

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Which one of the following statements is wrong?

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Proximal end of the filament of stamen is attached to the

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Which of the following approaches does not give the defined action of contraceptive?

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The taq polymerase enzyme is obtained from

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Identify the correct statement on 'inhibin'.

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Which part of the tobacco plant is infected by Meloidogyme incognita?

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Antivenom injection contains performed antibodies while polio drops that are administered into body contain

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Which one of the cell organelles is enclosed by a single membrane?

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Lack of relaxation between successive stimuli in sustained muscle contraction is known as

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Which of the following is not a stem modification?

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Water soluble pigments found in plant cell vacuoles are

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Select the correct statement.

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Which of the following is not required for any of the techniques of DNA fingerprinting available at present?

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Which type of tissue correctly matches with its location?
 A Smooth muscle 1 Wall of intestine
 B Areolar tissue 2 Tendons
 C Transitional epithelium 3 Tip of nose
 D Cuboidal epithelium 4 Lining of stomach

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A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rate of photosynthesis at high temperature and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant?

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Which of the following characteristic features always holds true for the corresponding group of animals?
(1)Cartilagineous endoskeletonChondrichthyes
(2)ViviparousMammalia
(3)Possess a mouth with an upper and lower jawChordata
(4)3-chambered heart with one incompletely divided ventricleReptilia

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Which of the following statement is not true for cancer cells in relation to mutations?

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The amino acid tryptophan is the precursor for the synthesis of

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Following are the two statements regarding origin of the life.
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements which one of the following options is correct?

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Reduction in pH in blood will 

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Analogous structures are a result of

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Which of the following is a restriction endonuclease?

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The term ecosystem was coined by

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Which one of the following statement is wrong?

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In bryophytes and pteridophytes, transport of male gametes requires

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When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1-N/K) 

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Which one of the following statement is not true?

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Which of the following would appear as the pioneer organisms on bare rocks?

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Which one of the following is start codon?

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Which one of the following characteristics is not shared by birds and mammals?

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Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?

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Blood pressure in the pulmonary artery is

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Cotyledon of maize grain is called as

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In the stomach, gastric acid is secreted by the

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Depletion of which gas in the atmosphere can lead to an increase incidence of skin cancers?

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Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom 

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Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out of the above statements using one of the following options.

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In mammals, which blood vessel would normally carry largest amount of urea?

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Seed formation without fertilization in flowering plants involves the process of

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Which of the following is wrongly matched in the given table ?
MicrobeProductApplication
(1)Trichoderma polysporumCyclosporin Aimmunosuppressive drug
(2)Monascus purpureusStatinslowering of blood cholesterol
(3)StreptococcusStreptokinaseremoval of clot from blood vessel
(4)Clostridium acetobutylicumLipaseremoval of oil stains

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In a testcross involving dihybrid flies, more parental type offsprings were produced than the recombinant type offsprings. This indicates that

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It is much easier for a small animal to run uphill than for a large animal, because

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Which of the following is not a characteristic feature during mitosis in somatic cells?

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Which of the following statement is not correct?

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Specialized epidermal cells surrounding the guard cells are called as

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Which of the following guards the opening of hepatopancreatic duct into duodenum?

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Stems modified into flat green organs performing the functions of leaves are known as

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The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the

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A river with an inflow of domestic sewage rich in organic waste may result in

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A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in

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A typical fat molecule is made up of

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