CBSE Class 12 Chemistry 2026 question paper (56/1)

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

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1. A.
   0.1 M Glucose
2. B.
   0.1 M $\mathrm{CaCl_2}$
3. C.
   0.1 M $\mathrm{KCl}$
4. D.
   0.1 M Urea

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1. A.
   Sc
2. B.
   Ag
3. C.
   Hg
4. D.
   Cu

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1. A.
   $+\dfrac{\mathrm{E_a}}{\mathrm{RT}}$
2. B.
   $e^{-\mathrm{E_a}/\mathrm{RT}}$
3. C.
   $-\dfrac{\mathrm{E_a}}{\mathrm{RT}}$
4. D.
   $e^{+\mathrm{E_a}/\mathrm{RT}}$

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1. A.
   Cu will deposit at Anode
2. B.
   $\mathrm{H_2}$ gas will be released at cathode
3. C.
   $\mathrm{O_2}$ gas will be released at anode
4. D.
   $\mathrm{Cl_2}$ gas will be released at anode

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1. A.
   Phenol
2. B.
   Salicylaldehyde
3. C.
   2-Hydroxybenzoic acid
4. D.
   Benzoic acid

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1. A.
   5
2. B.
   1
3. C.
   4
4. D.
   6

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1. A.
   2, 4, 6-Trinitrophenol
2. B.
   o-Nitrophenol only
3. C.
   p-Nitrophenol only
4. D.
   ortho-and para-nitrophenol

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1. A.
   They have the same chemical reactivity.
2. B.
   They have the same specific rotation.
3. C.
   They have the same melting or boiling point.
4. D.
   They have the same refractive index.

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1. A.
   51%-ortho, 47%-para, 2%-meta derivatives
2. B.
   51%-meta, 47%-ortho, 2%-para derivatives
3. C.
   51%-para, 47%-meta, 2%-ortho derivatives
4. D.
   51%-ortho, 47%-meta, 2%-para derivatives

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1. A.
   $\mathrm{C_6H_5-N(CH_3)_2}$
2. B.
   $\mathrm{C_6H_5-NH(CH_3)}$
3. C.
   $\mathrm{C_6H_5-NH_2}$
4. D.
   $p\text{-}\mathrm{O_2N-C_6H_4-NH_2}$

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

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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.
   $\mathrm{Mn_2O_7}$
2. B.
   $\mathrm{MnO_2}$
3. C.
   $\mathrm{MnO}$
4. D.
   $\mathrm{Mn_2O_3}$

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

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1. A.
   0.1 M $\mathrm{KCl}$
2. B.
   0.1 M $\mathrm{CaCl_2}$
3. C.
   0.1 M Glucose
4. D.
   0.1 M Urea

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1. A.
   $+\dfrac{1}{3}\dfrac{\Delta\,[\mathrm{NH_3}]}{\Delta t}$
2. B.
   $-\dfrac{1}{2}\dfrac{\Delta\,[\mathrm{NH_3}]}{\Delta t}$
3. C.
   $+\dfrac{1}{4}\dfrac{\Delta\,[\mathrm{NH_3}]}{\Delta t}$
4. D.
   $+\dfrac{1}{2}\dfrac{\Delta\,[\mathrm{NH_3}]}{\Delta t}$

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

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1. A.
   $\mathrm{CH_3MgBr}$
2. B.
   Cyclohexylmethylmagnesium bromide
3. C.
   Cyclohexylmagnesium bromide
4. D.
   2-Cyclohexylethylmagnesium bromide

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1. A.
   6
2. B.
   5
3. C.
   4
4. D.
   2

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1. A.
   $\mathrm{(CH_3)_3\,C - I}$ and $\mathrm{C_2H_5 - I}$
2. B.
   $\mathrm{(CH_3)_3\,C - OH}$ and $\mathrm{C_2H_5 - I}$
3. C.
   $\mathrm{(CH_3)_3\,C - I}$ and $\mathrm{C_2H_5 - OH}$
4. D.
   $\mathrm{(CH_3)_3\,C - OH}$ and $\mathrm{C_2H_5 - OH}$

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1. A.
   51%-ortho, 47%-para, 2%-meta derivatives
2. B.
   51%-meta, 47%-ortho, 2%-para derivatives
3. C.
   51%-para, 47%-meta, 2%-ortho derivatives
4. D.
   51%-ortho, 47%-meta, 2%-para derivatives

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1. A.
   They have the same chemical reactivity.
2. B.
   They have the same specific rotation.
3. C.
   They have the same melting or boiling point.
4. D.
   They have the same refractive index.

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1. A.
   Glucose
2. B.
   Sucrose
3. C.
   Lactose
4. D.
   Maltose

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1. A.
   Azobenzene
2. B.
   Benzene
3. C.
   Chlorobenzene
4. D.
   p-hydroxyazobenzene

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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.
   C – 1
2. B.
   C – 2
3. C.
   C – 3
4. D.
   C – 5

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1. A.
   $\mathrm{K_f = \dfrac{M_1 \times T_f^2}{R \times 1000 \times \Delta_{fus}H}}$
2. B.
   $\mathrm{K_f = \dfrac{R \times M_1 \times \Delta_{fus}H}{1000 \times T_f^2}}$
3. C.
   $\mathrm{K_f = \dfrac{R \times T_f^2 \times \Delta_{fus}H}{1000 \times M_1}}$
4. D.
   $\mathrm{K_f = \dfrac{R \times M_1 \times T_f^2}{1000 \times \Delta_{fus}H}}$

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1. A.
   Cr
2. B.
   V
3. C.
   Mn
4. D.
   Fe

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

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1. A.
   51%-ortho, 47%-para, 2%-meta derivatives
2. B.
   51%-meta, 47%-ortho, 2%-para derivatives
3. C.
   51%-para, 47%-meta, 2%-ortho derivatives
4. D.
   51%-ortho, 47%-meta, 2%-para derivatives

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1. A.
   They have the same chemical reactivity.
2. B.
   They have the same specific rotation.
3. C.
   They have the same melting or boiling point.
4. D.
   They have the same refractive index.

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1. A.
   4
2. B.
   3
3. C.
   5
4. D.
   6

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1. A.
   2, 4, 6-Tribromophenol
2. B.
   a mixture of ortho-and para-bromophenol
3. C.
   ortho-bromophenol only
4. D.
   para-bromophenol only

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1. A.
   It increases for weak electrolyte and decreases for strong electrolyte.
2. B.
   It decreases for weak electrolyte and increases for strong electrolyte.
3. C.
   It increases for both weak and strong electrolytes.
4. D.
   It decreases for both weak and strong electrolytes.

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1. A.
   $\mathrm{CH_3CONH_2}$
2. B.
   $\mathrm{CH_3COONHCH_3}$
3. C.
   $\mathrm{CH_3 - NH - \underset{\mathrm{O}}{\underset{\|}{\mathrm{C}}} - CH_3}$
4. D.
   $\mathrm{CH_3 - \underset{\mathrm{O}}{\underset{\|}{\mathrm{C}}} - CH_2 - NH_2}$

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1. A.
   $l\mathrm{nk}$ vs. $\mathrm{T}$
2. B.
   $l\mathrm{nk}$ vs. $\dfrac{1}{\mathrm{T}}$
3. C.
   $l\mathrm{n}\dfrac{\mathrm{k}}{\mathrm{T}}$ vs. $\mathrm{T}$
4. D.
   $\dfrac{\mathrm{T}}{l\mathrm{nk}}$ vs. $\dfrac{1}{\mathrm{T}}$

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1. A.
   $\mathrm{CH_3 - \underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}} - CH_2 - \underset{\mathrm{O}}{\underset{\|}{\mathrm{C}}} - O - CH_3}$
2. B.
   $\mathrm{CH_3 - \underset{\mathrm{O}}{\underset{\|}{\mathrm{C}}} - CH_2 - CH_2 - OH}$
3. C.
   $\mathrm{CH_3 - \underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}} - CH_2 - CH_2 - OH}$
4. D.
   $\mathrm{CH_3 - \underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}} - CH_2 - COOH}$

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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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