The structure of A in the below mentioned reaction is:

 

1.		2.
3.		4.

The reducing agent among the following is:

1. CrO₃/H⁺

2. KMnO₄

3. LiAlH₄

4. O₃

Which of the following reagents causes rapid loss of optical activity in optically active 2-octanol?

Which of the following reaction conditions is not suitable for the preparation of an ester?

1. RCOOH + R'OH + OH^-

2. RCOCl+R'OH +Pyridine

3. RCOOH+ R’OH +H⁺

4. (RCO)₂O + R'OH + Pyridine

Which of the following is formed by intermolecular dehydration of alcohols?

1. Alkenes

2. Ketones

3. Alkynes

4. Ethers

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

Which of the following compounds forms diethyl ether upon intermolecular dehydration?

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

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