CBSE Class 12 Chemistry 2024 question paper (56/3)

1. A.
   $\mathrm{Fe}$
2. B.
   $\mathrm{Cu}$
3. C.
   $\mathrm{Mn}$
4. D.
   $\mathrm{Sc}$

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1. A.
   Ionisation isomerism
2. B.
   Geometrical isomerism
3. C.
   Linkage isomerism
4. D.
   Coordination isomerism

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1. A.
   $\mathrm{Co^{3+}}$, octahedral complex with strong field ligand
2. B.
   $\mathrm{Co^{3+}}$, octahedral complex with weak field ligand
3. C.
   $\mathrm{Co^{3+}}$, in a square planar complex
4. D.
   $\mathrm{Co^{3+}}$, in a tetrahedral complex

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1. A.
   $\mathrm{NC-C_6H_4-CH_2-CN}$
2. B.
   $\mathrm{NC-C_6H_4-CH_2-Cl}$
3. C.
   $\mathrm{Cl-C_6H_4-CH_2-CN}$
4. D.
   $\mathrm{Cl-C_6H_3(CN)-CH_2-CN}$

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1. A.
   $p$-Cresol
2. B.
   $p$-Nitrophenol
3. C.
   $m$-Nitrophenol
4. D.
   2,4,6-Trinitrophenol

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1. A.
   $\mathrm{(CH_3)_2CH-I + CH_3OH}$
2. B.
   $\mathrm{(CH_3)_2CH-OH + CH_3-I}$
3. C.
   $\mathrm{(CH_3)_2CH-I + CH_3-I}$
4. D.
   $\mathrm{(CH_3)_2CH-OH + CH_3OH}$

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1. A.
   $\mathrm{CH_3CONH_2}$
2. B.
   $\mathrm{(CH_3)_3N}$
3. C.
   $\mathrm{(CH_3)_2NH}$
4. D.
   $\mathrm{CH_3CH_2NH_2}$

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1. A.
   IV < III < I < II
2. B.
   II < I < IV < III
3. C.
   I < II < III < IV
4. D.
   II < III < I < IV

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1. A.
   Vitamin A
2. B.
   Vitamin E
3. C.
   Vitamin D
4. D.
   Vitamin K

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1. A.
   remains constant
2. B.
   decreases
3. C.
   increases
4. D.
   may increase or decrease depending on the order of the reaction

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1. A.
   $34{\cdot}2$ g $\mathrm{mol^{-1}}$
2. B.
   57 g $\mathrm{mol^{-1}}$
3. C.
   114 g $\mathrm{mol^{-1}}$
4. D.
   $3{\cdot}42$ g $\mathrm{mol^{-1}}$

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1. A.
   Oxidation of $\mathrm{Cl^{-}}$ ion
2. B.
   Reduction of $\mathrm{Na^{+}}$ ion
3. C.
   Oxidation of $\mathrm{H_2O}$
4. D.
   Reduction of $\mathrm{H_2O}$

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   $\mathrm{NH_3}$
2. B.
   $\mathrm{SO_4^{2-}}$
3. C.
   $\mathrm{NO_2^{-}}$
4. D.
   $\mathrm{C_2O_4^{2-}}$

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1. A.
   4
2. B.
   2
3. C.
   3
4. D.
   6

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1. A.
   same electronic configuration
2. B.
   same enthalpies of atomisation
3. C.
   same oxidation states
4. D.
   nearly the same atomic size

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1. A.
   1-Bromo-2-methylcyclobutane
2. B.
   1-Bromo-1-methylcyclobutane
3. C.
   (Bromomethyl)cyclobutane
4. D.
   1-Bromo-3-methylcyclobutane

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1. A.
   $p$-Nitrophenol
2. B.
   $m$-Nitrophenol
3. C.
   $p$-Cresol
4. D.
   2,4,6-Trinitrophenol

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1. A.
   $\mathrm{C_6H_5-I + CH_3-OH}$
2. B.
   $\mathrm{C_6H_5-OH + CH_3-I}$
3. C.
   $\mathrm{C_6H_5-OH + CH_3-OH}$
4. D.
   $\mathrm{C_6H_5-I + CH_3-I}$

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1. A.
   $\mathrm{(CH_3)_3N}$
2. B.
   $\mathrm{(CH_3)_2NH}$
3. C.
   $\mathrm{CH_3CH_2NH_2}$
4. D.
   $\mathrm{C_6H_5NH_2}$

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1. A.
   $\mathrm{C_2H_5NH_2}$
2. B.
   $\mathrm{(C_2H_5)_2NH}$
3. C.
   $\mathrm{(C_2H_5)_3N}$
4. D.
   $\mathrm{C_6H_5-NH-CH_3}$

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1. A.
   B
2. B.
   C
3. C.
   K
4. D.
   A

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1. A.
   $34{\cdot}2$ g $\mathrm{mol^{-1}}$
2. B.
   57 g $\mathrm{mol^{-1}}$
3. C.
   114 g $\mathrm{mol^{-1}}$
4. D.
   $3{\cdot}42$ g $\mathrm{mol^{-1}}$

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1. A.
   First
2. B.
   Second
3. C.
   Zero
4. D.
   $\frac{1}{2}$

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1. A.
   Dry cell
2. B.
   Lead storage cell
3. C.
   Mercury cell
4. D.
   Daniell cell

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   $\mathrm{CO}$
2. B.
   $\mathrm{SCN^{-}}$
3. C.
   $\mathrm{NH_3}$
4. D.
   $\mathrm{H_2O}$

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1. A.
   6
2. B.
   4
3. C.
   3
4. D.
   7

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1. A.
   Sc
2. B.
   Cr
3. C.
   Cu
4. D.
   Zn

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1. A.
   $\mathrm{4-Cl-C_6H_4-CH_2-Cl}$
2. B.
   $\mathrm{4-HO-C_6H_4-CH_2-Cl}$
3. C.
   $\mathrm{4-Cl-C_6H_4-CH_2-OH}$
4. D.
   $\mathrm{2-Cl-4-HO-C_6H_3-CH_2-OH}$

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1. A.
   $\mathrm{C_6H_{11}-CH_2MgBr}$
2. B.
   $\mathrm{C_6H_{11}-CH_2CH_2MgBr}$
3. C.
   $\mathrm{C_6H_5-MgBr}$
4. D.
   $\mathrm{C_6H_{11}-MgBr}$

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1. A.
   $\mathrm{CH_3-OH + CH_3-I}$
2. B.
   $\mathrm{2CH_3-OH}$
3. C.
   $\mathrm{2CH_3-I}$
4. D.
   $\mathrm{CH_3-I + CH_4}$

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1. A.
   $\mathrm{(C_2H_5)_3N}$
2. B.
   $\mathrm{C_2H_5-NH_2}$
3. C.
   $\mathrm{(C_2H_5)_2NH}$
4. D.
   $\mathrm{C_6H_5-NH_2}$

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1. A.
   E
2. B.
   A
3. C.
   C
4. D.
   D

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1. A.
   $34{\cdot}2$ g $\mathrm{mol^{-1}}$
2. B.
   57 g $\mathrm{mol^{-1}}$
3. C.
   114 g $\mathrm{mol^{-1}}$
4. D.
   $3{\cdot}42$ g $\mathrm{mol^{-1}}$

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1. A.
   $0{\cdot}693$ min
2. B.
   $2{\cdot}31$ min
3. C.
   $6{\cdot}93$ min
4. D.
   $0{\cdot}231$ min

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1. A.
   Dry cell
2. B.
   Mercury cell
3. C.
   Nickel-cadmium cell
4. D.
   Fuel cell

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1. A.
   o-bromoaniline
2. B.
   2,4,6-tribromoaniline
3. C.
   m-bromoaniline
4. D.
   p-bromoaniline

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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