When benzene sulphonic acid and p-nitrophenol are treated with ${\mathrm{NaHCO}}_3$, the gases released respectively are:

1. ${\mathrm{SO}}_2, {\mathrm{NO}}_2$

2. ${\mathrm{SO}}_2, \mathrm{NO}$

3. ${\mathrm{SO}}_2, {\mathrm{CO}}_2$

4. ${\mathrm{CO}}_2, {\mathrm{CO}}_2$

Which reagent is used to convert benzoic acid into benzoyl chloride?

1. Cl₂, hv

2. SO₂

3. SOCl₂

4. Cl₂, H₂O

Schiff's reagent gives pink color with

1. Acetone

2. Acetaldehyde

3. Acetic acid

4. Methyl acetate

The hydrogenation of benzoyl chloride in the presence of Pd and BaSO₄ gives:

1. Benzyl alcohol

2. Benzaldehyde

3. Benzoic acid

4. Phenol

The reagent that can be used to distinguish between methanoic acid and ethanoic acid is: 

1. Sodium carbonate solution

2. Ammonical silver nitrate solution

3. Phenolphthalein

4. Neutral ferric chloride solution

X + CH₃COOH   →   Ester  +  H₂O  
X is:

Lactic acid on oxidation with alkaline potassium permanganate gives:

1. Propionic acid

2. Cinnamic acid

3. Pyruvic acid

4. Tartaric acid

Which of the following is the weakest acid?

1. HCOOH

2. ${\mathrm{CH}}_3\mathrm{COOH}$

3. 

4. 

The compound that can give a positive iodoform test is:

1. 2-Phenylethanol

2. Pentanal

3. 3-Pentanol

4. 1-Phenylethanol