CBSE Class 12 Chemistry Sample Paper 2022 Set 02 Solved

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Access comprehensive sample question papers for Class 12 Chemistry using the CBSE Class 12 Chemistry Sample Paper 2022 Set 02 Solved. Designed to align with the 2026-27 CBSE academic guidelines, these model papers help students assess their exam readiness and understand current marking schemes.

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1. How many Faradays of charge are required to convert 20 g of Ca from molten CaCl2?
(RAM of Ca=40 u)
 
2. A reaction is second order with respect to a reactant A. How is the rate of this reaction altered if the concentration of A is reduced to half ?
 
3. Write any two consequences of Lanthanoid contraction. 
4. Give the structure of N-Ethyl-N-methylpropanamine 
5. Write the IUPAC name of
CBSE Class 12 Chemistry Sample Paper 2022 Set B Solved 1
 
6. Describe the manufacture of KMnO4 from Pyrolusite. 
7. a) Reduction of metal to metal oxide becomes easier if the metal obtained is in liquid state. Why?
b) Write the principle of froth floatation method.
 
8. Define
a) Peptization
b) Zeta potential
OR
Write chemical equations for the preparation of:
a) Gold sol by reduction. b) Hydrated ferric oxide sol by hydrolysis
 
9. a) Which would undergo SN2 reaction faster in the following pair and why?
CH3CH2Br and CH3CH2 I
b) Racemisation occurs in SN1 reactions. Account.
 
10. a) Give a chemical test to distinguish between dimethylamine and trimethyl amine.
b) Give the formula of the compound obtained by Hofmannn degradation reaction of 4-chlorocyclohexane carboxamide.
 
11. Explain giving reasons:
a) E0 value for Mn3+/Mn2+ is more positive than that for Cr3+/Cr2+.
b) Actinoids exhibit more number of oxidation states than Lanthanoids.
c) MnO is basic while Mn2O7 is acidic.
 
12. a) State Hardy-Schulze rule
b) Explain the term selectivity of a catalyst with example
c) What will happen if Fe (OH) 3 and As2S3 sols are mixed? Give reason.
 
13. a) Complete the following reaction
CH3 – C (CH3)2– OCH3 + HI → ?
b) Convert
(i) Phenol to benzoquinone
(ii) Methanal to propan -1-ol
 
14. Describe the role of
a) NaCN in the extraction of gold from its ore.
b) Cryolite in the extraction of aluminium from pure alumina.
c) CO in the purification of Nickel
 
15. a) On the basis of crystal field theory ,write the electronic configuration for d4 ion , if Δ0 < P.
b) Identify the type of isomerism shown by the complex Cr(H2O)6Cl3 .
c) Write the hybridization and magnetic behaviour of the complex [CoF6]3 – (Aomic no of Co =27)
 
16. Discuss the nature of bonding in metal carbonyls.
OR
a) Write the IUPAC name of the complex K3[Fe(C2O4)3].
b) Explain the following
(i) Denticity
(ii) Spectrochemical series


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CBSE Class 12 Chemistry Sample Paper 2022 Set 02 Solved & Sample Question Papers for Class 12 Chemistry

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Post-Practice Strategy for Class 12 Chemistry

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