# Basic Science Practice Questions

Basic science is the study of the fundamental concepts of science that are related to everyday life. Basic science awareness is a common topic in many competitive exams. This section has many concepts that you may have thought about in your daily life. Science as exciting as it is, is also very important from an exam point of view. So let us answer the following science quiz.

## Basic Science Practice Questions

We will divide the sections as per the subjects. Mainly we will have three subjects or topics under which the questions will be asked. They are Physics, Chemistry and Biology. Let us first start with some basic questions in Physics.

### Physics

Q1: Which among the following waves is used for communication by artificial satellites?

(a) The frequency of 101 series                (b) Radio waves

(c) A. M.                            (d) Microwaves

Q2: When the speed of a car is doubled then what should be the braking force of the car to stop it at the same distance?

(a) two times          (b) four times

(c) half                        (d) one fourth

Q3: The mass of a star is two times the mass of the Sun. How will it come to an end?

(a) Neutron Star                (b) Blackhole

(c) White Dwarf                 (d) Red Giant

Q4: Rain drops fall from great height. Which among the following statements is true regarding it?

(a) their velocity increases and they fall with the same velocity of the earth

(b) they fall with the same ultimate velocity

(c) their velocity increases and they fall with different velocities on the surface of the earth

(d) they fall with that ultimate velocity which is different for different droplets.

Q5: Which of the following statements is true when we see a rainbow?

(a) We must face the sun and view it through the raindrops

(b) The Sun remains behind us and we face the raindrops

(c) In a light rainfall, we will face the Sun

(d) The sky remains clear and the sun is at a lower position in the sky

Q1: D), Q2: B), Q3: A), Q4: D), Q5: B)

### Chemistry

Q1: Cement is made hard by:

(a) dehydration

(b) hydration and dissociation of water

(c) Dissociation of water

(d) Polymerisation

Q2: What happens when a chemical bond is formed?

(a) energy is always absorbed

(b) energy is always released

(c) more energy is released than is absorbed

(d) energy is neither released nor absorbed

Q3: Which one of the following metals pollutes the air of a city having a large number of automobiles?

(b) Chromium

(d) Copper

Q4: Table salt gets moist during the rainy season because:

(a) sodium chloride is hygroscopic

(b) sodium chloride is deliquescent

(c) sodium chloride contains some quantity of sodium iodide

(d) sodium chloride contains hygroscopic impurities like magnesium chloride

Q5: Which among the following stage is a suitable indicator when the solution of sodium carbonate is mixed with sulphuric acid?

(a) Methylene blue                (b) Methyl red

(c) Phenolphthalein              (d) Methyl orange

Q6: Milk of Magnesia is a suspension of:

(a) magnesium sulphate              (b) magnesium carbonate

(c) magnesium hydroxide           (d) magnesium chloride

Q7: The presence of ozone in the stratosphere is responsible for?

(a) increasing the average global temperature in recent years

(b) a higher rate of photosynthesis

(c) checking the penetration of ultraviolet rays to the earth

(d) supplying oxygen for people travelling in jets

Q8: The fundamental particles present in the nucleus of an atom are:

(a) Electrons and protons

(b) Protons and neutrons

(c) Neutrons and electrons

(d) Neutrons and positrons

Q9: In which of the following substances all carbon atoms are quaternary in nature?

(a) Graphite         (b) Diamond            (c) Teflon                (d) Naphthalene

Q10: The ratio of pure gold in 18-carat gold is:

(a) 60%            (b) 75%           (c) 80%             (d) 90%

Q1: B), Q2: A), Q3: C), Q4: D), Q5: D), Q6: C), Q7: C), Q8: B), Q9: B), Q10: B)

### Biology

Q1: The colour of the eye depends upon the pigment present inside?

(a) cornea                (b) iris                  (c) rods               (d) cones

Q2: The ability of the eye to see in the dark is due to the production of a purple pigment known as?

(a) Carotene              (b) Rhodopsin                     (c) Iodopsin                    (d) Retinene

Q3: The vitamin most readily destroyed by heat is?

(a) Riboflavin            (b) Ascorbic acid                (c) Tocopherol               (d) Thiamine

Q4: Which one of the following is not a vaccine?

(a) BCG                       (b) Anti-rabies                   (c) Polio vaccine             (d) Progesterone

Q5: The disease that is caused by the virus is?

(a) Typhoid            (b) Cholera             (c) Common Cold              (d) Tetanus

Q6: The locomotory organ of Amoeba is?

(a) Pseudopodia               (b) Parapodia                   (c) Flagella                 (d) Cilia

Q7: The number of chromosomes present in a normal human being is?

(a) 23           (b) 46           (c) 22                 (d) 48

Q8: An instrument for measuring blood pressure is called?

(a) Barometer                  (b) Spirometer                (c) Sphygmomanometer              (d) Haemocytometer

Q1: B), Q2: D), Q3: B), Q4: D), Q5: C), Q6: A), Q7: B), Q8: C)

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