The reducing agent among the following is -

1. CrO₃/H⁺

2. KMnO₄

3. LiAlH₄

4. O₃

Optically active 2-octanol rapidly loses its optical activity when exposed to :

An ester cannot be prepared by -

1. RCOOH + R'OH + OH^-

2. RCOCl+R'OH +Pyridine

3. RCOOH+ R’OH +H⁺

4. (RCO)₂O + R'OH + Pyridine

Intermolecular dehydration of alcohol gives:

1. Alkenes

2. Ketones

3. Alkynes

4. Ethers

Product C in the following sequence of reactions is:
\(C_2H_5Br \xrightarrow{NaOH\text{(aq)}}\ A \xrightarrow{Na}\ B\ \xrightarrow{CH_3I}\ C\)

Diethyl ether may be regarded as an anhydride of:

1. C₂H₅COOH
2. C₂H₅OH
3. C₂H₅CHO
4. C₂H₅COOC₂H₅

The value of C-O-C bond angle in ether molecule is:

The alcohol that gives carboxylic acids having the same number of carbon atoms is -