Which acid doesn't exhibit optical isomerism?

1. Maleic acid

2. $\alpha$-amino acid

3. Lactic acid

4. Tartaric acid

The Clemmensen reduction of a ketone is carried out in the presence of:

1. $\mathrm{Zn}$-$\mathrm{Hg}$ with $\mathrm{HCl}$

2. ${\mathrm{LiAlH}}_4$

3. ${\mathrm{H}}_2$ and $\mathrm{Pt}$ as a catalyst

4. Glycol with $\mathrm{KOH}$

The product 'D' in the below-mentioned reaction will be:

1.		2.
3.		4.

The example of a nucleophilic substitution reaction among the following is:

1.
2.
3.
4.

The compound that is most susceptible to a nucleophilic attack in the carbonyl group is:

1. ${\mathrm{CH}}_3{\mathrm{COOCH}}_3$

2. ${\mathrm{CH}}_3{\mathrm{CONH}}_2$

3. ${\mathrm{CH}}_3{\mathrm{COOCOCH}}_3$

4. ${\mathrm{CH}}_3\mathrm{COCl}$

In a basic medium, acetophenone yields a stable compound A with C₂H₅ONa.

The structure of A is:

1.		2.
3.		4.

The product of the below-mentioned reaction is:

1.		2.
3.		4.

The correct statement among the following about HCOOH is:

1. It is a stronger acid than CH₃COOH

2. It reduces Tollen’s reagent

3. It gives CO and H₂O on heating with conc.H₂SO₄

4. All of the above