Class 12 Chemistry MCQ Chapter 13 Amines Solutions to each chapter is provided in the list so that you can easily browse through different chapters Class 12 Chemistry MCQ Chapter 13 Amines Question Answer and select need one. Class 12 Chemistry MCQ Chapter 13 Amines Guide Download PDF. AHSEC Chemistry Multiple Choice Class 12 Solutions.
Class 12 Chemistry MCQ Chapter 13 Amines
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. HS 2nd Year Chemistry Objective Type Solutions are part of All Subject Solutions. Here we have given NCERT Class 12 Chemistry Multiple Choice Question and Answer, NCERT Class 12 Chemistry Objective Type Solutions for All Chapters, You can practice these here.
Amines
Chapter: 13
| MCQ |
1. What type of amine is formed when two hydrogen atoms of ammonia are replaced?
(i) Primary amine.
(ii) Secondary amine.
(iii) Tertiary amine.
(iv) Quaternary amine
Ans: (ii) Secondary amine.
2. Which of the following amine-based compounds is used as a local anaesthetic in dentistry?
(i) Ephedrine.
(ii) Novocain.
(iii) Benadryl.
(iv) Adrenaline.
Ans: (ii) Novocain.
3. At what temperature is diazotisation carried out for the formation of diazonium salts?
(i) 293–298 K
(ii) 250–270 K
(iii) 273–278 K
(iv) 300–310 K
Ans: (iii) 273–278 K
4. Nitrogen atom of amino group is ………. hybridised.
(i) sp
(ii) sp2
(iii) sp3
(iv) sp3d
Ans: (iii) sp3
5. The compound which on reaction with aqueous nitrous acid at low temperature produces an oily nitrosamine is:
(i) Methyl amine.
(ii) Diethyl amine.
(iii) Ethyl amine.
(iv) Triethyl amine.
Ans: (iv) Triethyl amine.
6. Ethylamine can be prepared by the action of bromine and caustic potash on:
(i) Acetamide.
(ii) Formamide.
(iii) Propionamide.
(iv) Methyl cyanide.
Ans: (i) Acetamide.
7. Which of the following amines can exhibit enantiomerism?
(i) Benzenamine.
(ii) 2-Butanamine.
(iii) 2-Propanamine.
(iv) 2-Methyl-propanamine.
Ans: (ii) 2-Butanamine.
8. What are diazonium salts mainly used for in chemical reactions?
(i) Synthesis of alkanes.
(ii) Preparation of aromatic compounds and dyes.
(iii) Production of alcohols.
(iv) Formation of esters.
Ans: (ii) Preparation of aromatic compounds and dyes.
9. Reaction of an aliphatic primary amine with nitrous acid in cold leads to the formation of:
(i) A nitrile.
(ii) An alcohol.
(iii) A diazonium salt.
(iv) A secondary amine.
Ans: (ii) An alcohol.
10. What is the product when an amide is reduced with lithium aluminium hydride (LiAlH₄)?
(i) Ketone
(ii) Amine
(iii) Alcohol
(iv) Aldehyde
Ans: (ii) Amine
11. Amongst the following, the most basic compound is:
(i) Benzylamine.
(ii) Aniline.
(iii) Acetanilide.
(iv) p-Nitroaniline.
Ans: (i) Benzylamine.
12. What is the major product when butanamide undergoes Hoffmann bromamide degradation?
(i) Ethylamine.
(ii) Methylamine.
(iii) Propanamine.
(iv) Butylamine.
Ans: (iii) Propanamine.
13. Which reagent is used for the reduction of amides to amines?
(i) LiAlH₄
(ii) H₂/Pd
(iii) NaBH₄
(iv) Grignard reagent
Ans: (i) LiAlH₄
14. Which compound is more soluble in water?
(i) Butan-1-ol.
(ii) Butan-1-amine.
(iii) Both are equally soluble.
(iv) Neither is soluble.
Ans: (i) Butan-1-ol.
15. Benzene diazonium chloride when reacts with hypophosphorous acid produces :
(i) Benzene.
(ii) Phenol.
(iii) Phenyl phosphite.
(iv) Phenyl phosphate.
Ans: (i) Benzene.
