Bihar Board - Class 12 - Chemistry -Chapter 13: Amines Multiple Choice Questions ( MCQs)
The multiple choice questions for Chapter 13: Amines of Class 12 Chemistry are provided here in English. These questions are based on the NCERT curriculum for Class 12. They are designed to help students assess their understanding of the key concepts covered in the chapter. These multiple choice questions will be useful not only for the Class 12 board exams but also for entrance exams like NEET. The questions for Bihar Board Class 12 Chemistry, Chapter 13: Amines, have been prepared by expert teachers at Vidyakul. Multiple Choice Question 1. Nitrogen atom of the amino group is ……….. hybridised. (A) sp
(B) sp2
(C) sp3
(D) sp3d
2. Which of the following amines will give a carbylamine reaction ? (A) (C2H5)3N
(B) (C2H5)2NH
(C) C2H5NH2
(D) C3H7NHC2H5
3. Arrange the following compounds in increasing order of basicity : CH3NH2 , (CH3)2 NH , NH3 < C6H5NH2 (A) C6H5NH2 < NH3 < (CH3)2NH < CH3NH2 (B) CH3NH2<(CH3)2NH < NH3 <C6H5NH2
(C) C6H5NH2 < NH3 < CH3NH2 < (CH3)2NH
(D) (CH3)2NH < CH3NH2< NH3 < C6H5NH2
4. Which of the following reagents would not be a good choice for reducing an aryl nitro compound to an amine ? (A) H2 (excess)/Pt
(B) LiAlH4 in ether
(C) Fe and HCl
(D) Sn and HCl
5. In order to prepare a 1 amine from an alkyl halide with simultaneous addition of one CH2 group in the carbon chain, the reagent used as source of nitrogen is
(A) sodium amide, NaNH2
(B) sodium azide, NaN3
(C) potassium cyanide, KCN
(D) potassium phthalimide, C6H4(CO)2N-K+
Answer ⇒ (C) potassium cyanide, KCN
6. Amongst the given set of reactants, the most appropriate. for preparing 2 amine is
(A) 2 R-Br + NH3
(B) 2 R-Br +NaCN followed by H2/Pt
(C) 1 R-NH2+RCHO followed by H2/Pt
(D) 1 R-Br (2 mol) + potassium phthalimide followed by H3O+/ Heat
Answer ⇒ (C) 1 R-NH2+RCHO followed by H2/Pt
7. The gas evolved when methylamine reacts with nitrous acid is
(A) NH3
(B) N2
(C) H2
(D) C2H6
8. Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is
(A) Hofmann bromamide reaction
(B) Gabriel phthalimide synthesis
(C) Sandmeyer reaction
(D) Reaction NH3
Answer ⇒ (B) Gabriel phthalimide synthesis
9. Which of the following statements is false?
(A) Alkyl amine is a stronger base than ammonia
(B) Alkyl amine is a stronger base than aryl amine
(C) Alkyne amines react with nitrous acid to form alcohols
(D) Aryl amine reacts with nitrous amine to form phenol
Answer: (C) Alkyne amines react with nitrous acid to form alcohols
10. Which reactant reacts with acetamide to form methylamine?
(A) PCl5
(B) NaOH-Br2
(C) Soda Lime
(D) con. H2SO4
Answer : (B) NaOH-Br2
11. Difference between 1 , 2and 3amine can be made-
(A) By seaf test
(B) Fehling test
(C) Tollen test
(D) Hinsberg test
Answer: (D) Hinsberg test
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