set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

The enzyme involved in the oxidation of ethanol to form vinegar is

a) oxidase

b) acetobacter

c) zymase

d) invertase

Question : 2

The general formula C_nH_2nO₂ could be for open chain

a) diols

b) carboxylic acids

c) diketones

d) dialdehydes

Question : 3

Which among the following are unsaturated hydrocarbons?

1. $H_3C - CH_2 - CH_2 - CH_3$
2. $H_3C - C ≡ C - CH_3$
3. $H_3C - {CH} ↙{|} ↙{CH_3} - CH_3$
4. $H_3C - {CH} ↙{|} ↙{CH_3} = CH_3$

a) (ii) and (iv)

b) (ii) and (iii)

c) (i) and (iii)

d) (iii) and (iv)

Question : 4

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

a) Benzene

b) Ethanol

c) Formalin

d) Benzaldehyde

Question : 5

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 : 6

The main constituent of Vinegar is:

a) Ascorbic acid

b) Citric acid

c) Acetic acid

d) Tartaric acid