Check CBSE Sample Paper 2021-22 for Class 12 Chemistry & prepare for CBSE board exam 2021-22. It is MCQ based sample paper and the exam pattern of Term 1 CBSE Class 12 Chemistry 2021-22. The link to download CBSE Class 12 Chemistry Sample Paper 2021-22 is given at the end of this article.
CBSE Sample Paper 2021-22 (Term 1) for 10th, 12th With Answers & CBSE Marking Scheme 2021-22 Released: Download PDF Now!
CBSE Class 12 Chemistry Sample Paper 2021-22: Term 1
Subject: Chemistry (043)
Time: 90 Minutes Max. Marks: 35
General Instructions:
1. The Question Paper contains three sections.
2. Section A has 25 questions. Attempt any 20 questions.
3. Section B has 24 questions. Attempt any 20 questions.
4. Section C has 6 questions. Attempt any 5 questions.
5. All questions carry equal marks.
6. There is no negative marking.
SECTION A
This section consists of 25multiple choice questions with overall choice to attempt any 20
questions. In case more than desirable number of questions are attempted, ONLY first 20 will
be considered for evaluation.
1. Which of the following statements is true:
(a) Melting point of Phosphorus is less than that of Nitrogen
(b) N2 is highly reactive while P4 is inert
(c) Nitrogen shows higher tendency of catenation than P
(d) N-N is weaker than P-P
2. Which of the following is a non-stoichiometric defect?
(a) Frenkel defect
(b) Schottky defect
(c) metal deficiency defect
(d) interstitial defect
3. Identify the law which is stated as:
“For any solution, the partial vapour pressure of each volatile component in the solution is
directly proportional to its mole fraction.”
(a) Henry’s law
(b) Raoult’s law
(c) Dalton’s law
(d) Gay-Lussac's Law
4. Pink colour of LiCl crystals is due to:
(a) Schottky defect
(b) Frenkel defect
(c) Metal excess defect
(d) Metal deficiency defect
5. Which of the following isomer has the highest melting point:
(a) 1,2 - dicholorbenzene
(b) 1,3 - dichlorobenzene
(c) 1,4 - dicholorbenzene
(d) all isomers have same melting points
6. Which one of the following reactions is not explained by the open chain Structure of glucose:
(a) Formation of pentaacetate of glucose with acetic anhydride.
(b) formation of addition product with 2,4 DNP reagent
(c) Silver mirror formation with Tollen’s reagent
(d) existence of alpha and beta forms of glucose.
7. Williamson’s synthesis of preparing dimethyl ether is an:
(a) SN1 reaction
(b) Elimination reaction
(c) SN2 reaction
(d) Nucleophilic addition reaction
8. Chlorine water loses its yellow colour on standing because:
(a) HCl gas is produced, due to the action of sunlight.
(b) a mixture of HOCl and HCl is produced in the presence of light
(c) HOCl and hydrogen gas is produced
(d) a mixture of HCl and ClO3 is produced, due to the action of sunlight
9. During dehydration of alcohols to alkenes by heating with concentrated H2SO4, the initiation step is:
(a) protonation of alcohol molecule
(b) formation of carbocation
(c) elimination of water
(d) formation of an ester
10. Amorphous solids are:
(a) isotropic
(b) anisotropic
(c) isotopic
(d) isomeric
11. Which of the following reactions is used to prepare salicylaldehyde?
(a) Kolbe’s reaction
(b) Etard reaction
(c) Reimer- Tiemann reaction
(d) Stephen’s reduction.
12. Which of the following is an example of a solid solution?
(a) sea water
(b) sugar solution
(c) smoke
(d) 22 carat gold
13. The boiling points of alcohols are higher than those of hydrocarbons of comparable
masses due to:
(a) Hydrogen bonding
(b) Ion – dipole interaction
(c) Dipole- dipole interaction
(d) Van der Waal’s forces.
14. Which of the following has the lowest boiling point:
(a)H2O
(b)H2S
(c)H2Se
(d)H2Te
15. Which of the following statement is correct:
(a)Fibrous proteins are generally soluble in water
(b)Albumin is an example of fibrous proteins
(c)In fibrous proteins, the structure is stabilised by hydrogen bonds and disulphide bonds
(d)pH does not affect the primary structure of protein.
16. Major product obtained on reaction of 3-Phenyl propene with HBr in presence of organic
peroxide
(a) 3- Phenyl 1- bromopropane
(b) 1 –Phenyl -3- bromopropane
(c) 1-Phenyl -2-bromopropane
(d) 3-Phenyl -2- bromopropane
17. Which of the following is a correct statement for C2H5Br?
(a) It reacts with metallic Na to give ethane.
(b) It gives nitroethane on heating with aqueous solution of AgNO2
(c) It gives C2H5OH on boiling with alcoholic potash.
(d) It forms diethylthioether on heating with alcoholic KSH.
18. Covalency of nitrogen is restricted to:
(a) 2
(b) 3
(c) 4
(d) 5
19. Solubility of gases in liquids decreases with rise in temperature because dissolution is an:
(a) endothermic and reversible process
(b) exothermic and reversible process
(c) endothermic and irreversible process
(d) exothermic and irreversible process
20. All elements of Group 15 show allotropy except:
(a) Nitrogen
(b) Arsenic
(c) Antimony
(d) Bismuth
21.Which of the following is a polysaccharide?
(a) glucose
(b) maltose
(c) glycogen
(d) lactose
22. Substance having the lowest boiling point:
(a) Hydrogen
(b) Oxygen
(c) Nitrogen
(d) Helium
23. Lower molecular mass alcohols are:
(a) miscible in limited amount of water
(b) miscible in excess of water
(c) miscible in water in all proportions
(d) immiscible in water
24. Maximum oxidation state exhibited by Chlorine is:
(a) +1
(b) +3
(c) +5
(d) +7
25. In which of the following cases blood cells will shrink:
(a) when placed in water containing more than 0.9% (mass/ volume) NaCl solution.
(b) when placed in water containing less than 0.9% (mass /volume) NaCl solution.
(c) when placed in water containing 0.9% (mass/volume) NaCl solution.
(d) when placed in distilled water.
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For all the questions, download the PDF from the following links
