CBSE Class 12 Chemistry Sample Paper 2025 Solved

SECTION A

The following questions are multiple-choice questions with one correct answer. Each question carries 1 mark. There is no internal choice in this section.

1 Ammonolysis of ethyl chloride followed by reaction of the amine so formed with 1 mole of methyl chloride gives an amine that
a. reacts with Hinsberg reagent to form a product soluble in an alkali.
b. on reaction with Nitrous acid, produced nitrogen gas.
c. reacts with Benzenesulphonyl chloride to form a product that is insoluble in alkali.
d. does not react with Hinsberg reagent.

Answer : C

2 Which one of the following has the highest dipole moment?
a. CH₃F
b. CH₃Cl
c. CH₃I
d. CH₃Br

Answer : B

3 Match the properties given in column I with the metals in column II
                          Column I                                             ​​​​​​​Column II
(i) Actinoid having configuration [Rn] 5f ⁷6d¹7s²              (A) Ce
(ii) Lanthanoid which has 4f¹⁴ electronic                          (B) Lu
configuration in +3 oxidation state.
(iii) Lanthanoid which show +4 Oxidation state                (C) Cm
a. (i)-(C), (ii)-(B), (iii)-(A)
b. (i)-(C), (ii)-(A), (iii)-(B)
c. (i)-(A), (ii)-(B), (iii)-(C)
d. (i)-(B), (ii)-(A), (iii)-(C)