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TN Board 2013 Class 12 Chemistry Paper

Subjective

41 Qs

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State Heisenberg's uncertainty principle.

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Why electron affinity of fluorine is less than that of chlorine?

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Write a note of Plumbosolvency.

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is triprotic. Prove.

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Why do d-block elements exhibit variable oxidation states?

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What is "Spitting of Silver"? How is it prevented?

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Determine the average life having days.

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What are super conductors?

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Calculate the entropy change for the following process possessing.

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State Le Chatelier's principle.

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Give two examples for opposing reactions.

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Write Arrhenius equation and explain the terms.

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What is electrophoresis?

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State Faraday's second law of electrolysis.

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Mesotartaric acid is an optically inactive compound with asymmetric carbon atoms. Justify your answer.

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What is 'Glycerose'? How is it prepared from glycerol?

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How will you convert phenol to phenolpthalein?

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Give the IUPAC names of the following:
(a) Crotonaldehyde
(b) Methyl n-propyl ketone
(c) Benzaldehyde

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Give any two tests to identify carboxylic acids.

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An organic compound of molecular formula reacts with to give compound of molecular formula . is reduced by to give cmpound of formula . Identify and .

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What are antipyretics? Give an example.

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Explain the formation of molecule using molecular orbital theory.

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Explain how silver is extracted from its chief ore. 

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Discuss the consequences of lanthanide contraction.

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Explain the type hybridisation, magnetic property and geometry for and using VB theory.

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State the various statements of second law of thermodynamics.

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Derive the expressions for and for the decomposition of .

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Discuss the characteristics of order of a reaction.

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Determine the standard emf of the cell and standard free energy change of the cell reaction.

 
 

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Give any three methods of preparation diethyl ether.

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Write the differences between acetaldehyde and benzaldehyde.

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Give the mechanism involved in the esterification of a carboxylic acid with alcohol.

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How are Buna-S and nylon- prepared? Give their uses.

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(a) Explain the Pauling scale for the determination of electronegativity. Give the disadvantages of Pauling scale.
(b) How does Fluorine differ from other halogens?

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(a) Explain the co-ordination isomerism and ionisation isomerism with example.
(b) Explain Radio-Carbon dating.

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(a) Explain Schottky defect and Frenkel defect.
(b) Write briefly the adsorption theory of catalysis.

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(a) Explain Quinonoid theory of indicators.
(b) Write notes on IUPAC conventions of representations of a cell.

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(a) Discuss cis-trans isomerism with suitable example (Organic compounds)
(b) Account for the reducing nature of formic acid.

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(a) Distinguish between primary, secondary and tertiary amines.
(b) Explain the structure of fructose.

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(a) Compound with molecular formula gives violet colour with neutral . reacts with and gives two isomers and with molecular formula . Compound reacts with ammonia at in the presence of gives compound with molecular formula . Compound undergoes carbylamine test. Identify and and explain the reactions.
(b) is reddish brown metal. It belongs to group 11 and period 4 of the periodic table. When heated below . given a black compound . Wnen heated gives a red compound . With concentrated nitric acid, liberates gas and gives compound . Identify and . Explain the reactions.

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(a) Compound with molecular formula reduces Tollen's reagent. on treatment with gives compound . Compound on hydrolysis with an acid gives compound with molecular formula which is an optically active compound. Compound on reduction with gives a hydrocarbon of molecular formula . Identify and and explain the reactions.
(b) Ionic conductance at infinite dilution of and are and . Calculate equivalent and molar conductance of the electrolyte at infinite dilution.

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objective

30 Qs

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Thermodynamic condition for irreversible spontaneous process at constant '' and '' is:

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The total number of atoms per unit cell in is:

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Dual character of an electron was explained by:

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Which one of the following is a simple ether?

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is paramagnetic because:

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In the manufacture of ammonia by Haber's process, the maximum yield of ammonia will obtained with the process having:

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The phenomenon of Tyndall's effect is not observed in:

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The amino acid without chiral carbon is:

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In nitroalkanes group is converted to group by using the reagent:

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The metals present in Nichrome alloy is:

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Which of the following does not result in an increase in entropy?

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The compound that does not undergo cannizaro reaction is:

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The relationship between and for the equilibrium is:

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Strong mineral acids _______ the ethereal oxygen forming oxonium salts.

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Emulsifying agent is used for:

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The reducing sugar is:

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_______ form oxocations.

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The hybridisation is molecule is:

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Maximum oxidation state exhibited by lanthanides is:

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The noble gases are unreactive because they:

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When of a solution is , the hydrogen ion concentration in moles litre will be:

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Ethylene diamine is converted to ethylene glycol using:

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Paramagnetism is the property of:

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Among the following the strongest acid is:

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Silica gel is utilised for the ________ of the number of gases.

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Conversion of benzene diazonium chloride to chlorobenzene is:

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The organic compound that undergoes carbylamine reaction is:

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On moving down the group, the radius of an ion:

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nucleus absorbs a neutron and disintegrates into and .

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For a reaction, and at , the value of at will be:

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