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:

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

Phenyl ethyl ether with concentrated hydrobromic acid on boiling yields:-

1. Phenol and ethyl bromide

2. Bromobenzene and ethanol

3. Phenol and ethane

4. Bromobenzene and ethane

The compound that does not react with sodium is:

1. CH₃CHOHCH₃

2. CH₃ —O—CH₃

3. CH₃COOH

4. C₂H₅OH

An organic compound A reacts with sodium metal and forms B. On heating with conc. H₂SO₄, A gives diethyl ether. So A and B are:
1. C₃H₇OH and CH₃ONa
2. CH₃OH and CH₃ONa
3. C₄H₉OH and C₄H₉ONa
4. C₂H₅OH and C₂H₅ONa