CBSE Class 12 Chemistry Chapter 13 Amines MCQs
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CBSE Class 12 Chemistry Chapter 13 Amines MCQs (SET A)
1) The best reagent of converting, 2-phenylpropanamide into 2-phenylpropanamine is:
(A) excess H2
(B) Br2 in aqueous NaOH
(C) iodine in the presence of red phosphorus
(D) LiAlH4 in ether
Answer: LiAlH4 in ether.
2) The best reagent for converting, 2-phenylpropanamide into 1-phenylethanamine is:
(A) excess H2 / Pt
(B) NaOH / Br2
(C) NaBH4 / methanol
(D) LiAlH4 / ether
Answer: NaOH / Br2.
3) Hofmann bromamide degradation reaction is shown by :
(A) ArNH2
(B) ArCONH2
(C) ArNO2
(D) ArCH2NH2
Answer: ArCONH2.
4) Methylamine reacts with HNO2 to form:
(A) CH3 – O – N = O
(B) CH3 – O – CH2
(C) CH3OH
(D) CH3CHO
Answer: CH3OH.
5) The gas evolved when methylamine reacts with nitrous acid is :
(A) NH2
(B) N2
(C) H2
(D) C2H6
Answer: N2.
6) Methylamine can be prepared by:
(A) Wurtz reaction
(B) Friedel-Crafts reaction
(C) Hofmann’s bromamide reaction
(D) Clemmensen’s reaction
Answer: Hofmann’s bromamide reaction.
7) Primary amines are identified by:
(A) Hofmann’s reaction
(B) Carbylamine reaction
(C) Friedel-Crafts reaction
(D) Biuret reaction
Answer: Carbylamine reaction.
8) Carbylamine reaction is shown by:
(A) quaternary salt
(B) 3° amine
(C) 2° amine
(D) 1° amine
Answer: 1° amine.
CBSE Class 12 Chemistry Chapter 13 Amines MCQs (SET B)
1) Hinsberg’s reagent is:
(A) benzene sulphonamide
(B) benzene sulphonic acid
(C) benzene sulphuryl choride
(D) benzene sulphonyl chloride
Answer: benzene sulphonyl chloride.
2) How many primary amines are possible for the formula C4H11N?
(A) 1
(B) 2
(C) 3
(D) 4
Answer: 4.
3) Amine that can not be prepared by Gabriel phthalimide synthesis is :
(A) benzylamine
(B) aniline
(C) methylamine
(D) iso-butyl amine
Answer: aniline.
4) Aniline on treatment with aqueous bromine gives:
(A) 2,4,6-tribromoaniline
(B) o-bromoaniline
(C) 2,4-dibromoaniline
(D) p-bromoanilin
Answer: 2,4,6-tribromoaniline.
5) In the following reaction, C6H5NH2 + CHCl3 ⎯3KOH⎯⎯→ A + 3B + 3C. The product A is:
(A) phenyl isocyanide
(B) phenyl cyanide
(C) ethylene chloride
(D) chlorobenzene
Answer: phenyl isocyanide.
6) Aniline when treated with conc. HNO3/conc. H2SO4 at 293 K, the major product obtained is:
(A) p-phenylene diamine
(B) m-nitroaniline
(C) p-benzoquinone
(D) nitrobenzene
Answer: m-nitroaniline.
7) Acid hydrolysis of methyl isocyanide gives:
(A) CH3NH2 + HCOOH
(B) CH3NH2 + CH3COOH
(C) C2H5NH2 + HCOOH
(D) CH3NH2 + CH3CH2COOH
Answer: CH3NH2 + CH3CH2COOH.
CBSE Class 12 Chemistry Chapter 13 Amines MCQs (SET C)
1) Benzenediazonium chloride when reacted with hypophosphorus acid, produces :
(A) phenol
(B) phenyl phosphate
(C) benzene
(D) phenyl phosphite
Answer: benzene.
2) Benzenediazonium chloride on reacting with boiling water gives:
(A) phenol
(B) aniline
(C) benzylamine
(D) benzaldehyde
Answer: phenol.
3) When benzenediazonium chloride is heated with fluoroboric acid, fluorobenzene is formed. This reaction is called :
(A) Balz-Schiemann reaction
(B) Gattermann reaction
(C) Sandmeyer reaction
(D) Gomberg reaction
Answer: Balz-Schiemann reaction.
4) How many primary amines are possible with the formula of C4H11N?
(A) 1
(B) 2
(C) 3
(D) 4
Answer: 4.
5) Which of the following statement is incorrect in case of Hoffmann bromamide degradation?
(A) Reaction is useful for decreasing length of carbon chain by one carbon atom
(B) It gives tertiary amine
(C) It gives primary amine.
(D) Aqueous or alcoholic KOH is used with bromine
Answer: It gives tertiary amine.
6) Medius reaction converts an alkyl cyanide to
(A) a primary amine
(B) an aldehyde
(C) a ketone
(D) an oxime
Answer: a primary amine.
7) Which one of the following amines cannot be prepared by Gabriel’s synthesis?
(A) Butylamine
(B) Isobutylamine
(C) 2–Phenylethylamine
(D) N–Methylbenzylamine
Answer: N–Methylbenzylamine.
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