set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

The main constituent of Vinegar is:

a) Ascorbic acid

b) Citric acid

c) Acetic acid

d) Tartaric acid

Question : 2

Mineral acids are stronger acids than carboxylic acids because

1. mineral acids are completely ionized
2. carboxylic acids are completely ionized
3. mineral acids are partially ionized
4. carboxylic acids are partially ionized

a) B and C

b) A and B

c) A and D

d) C and D

Question : 3

The flavour of apple is mainly due to which one of the following?

a) Benzene

b) Ethanol

c) Formalin

d) Benzaldehyde

Question : 4

Addition of ethylene dibromide to petrol

a) helps elimination of lead oxide

b) removes the sulphur compound in petrol

c) increases the octane number of fuel

d) serves as a substitute of tetraethyl lead

Question : 5

General formula of alkyne is

a) C_nH_2n–2

b) C_nH_2n

c) C_nH_2n+2

d) C_nH_n

Question : 6

Hydrogenation of oils involves

1. saturation of unsaturated fatty acids
2. reaction with hydrogen in presence of nickel
3. conversion into saturated fatty acids
4. driving off the impurities in oil by hydrogen gas

a) 2, 3 and 4

b) 1, 2 and 3

c) 1, 2 and 4

d) 1, 3 and 4