Which are not cleaved by HIO₄?
I : glycerol
II : glycol
III: 1, 3-propanediol
IV: methoxy-2-propanol

1. I, II, III, IV

2. I, II

3. II, III

4. III, IV

Which of these is a reducing agent ?
1. CrO₃/H+
2. KMnO₄
3. LiAlH₄
4. O₃

Glycerol has:

1. 3 primary alcoholic groups

2. 3 secondary alcoholic groups

3. 1 primary alcoholic group and 2 secondary alcoholic groups

4. 2 primary alcoholic groups and 1 secondary alcoholic group

Wood spirit is:

1. CH₃OH

2. C₂H₅OH

3. CH₃CH₂CH₂OH

4. none of these

Phenol is:

1. a base weaker than NH₃

2. an acid stronger than carbonic acid

3. an acid weaker than carbonic acid

4. neutral

Purity of ether before using it as anaesthetic agent is tested by :-
1. KI + starch
2. CuSO₄
3. H₂SO₄
4. none of these

An organic compound A reacts with PCl₅ to give B. The compound B with sodium metal gives n-butane. Thus, A and B are:

1. C₂H₅OH and C₂H₅Cl
2. C₂H₅Cl and C₂H₅ONa
3. C₃H₇OH and CH₃CH₂CH₂OCl
4. C₄H₉OH and C₄H₉OCl

Which of the following undergoes dehydration most readily?

1. 1-phenyl-l-butanol

2. 1-phenyl-2-butanol

3. 2-phenyl-2-butanol

4. 2-phenyl-l-butanol

The enzyme which can catalyse the conversion of glucose to ethanol is:

1. zymase

2. diastase

3. maltase

4. invertase

Phenol on oxidation gives chloranil. The oxidant used is:

1. K₂S₂O₈

2. KMnO₄

3. KCIO₃ + HCl

4. none of these