Lacrymator or tear gas is:

1. C₆H₅COCl                               

2. C₆H₅OC₆H₅

3. C₆H₅COCH₂Cl                         

4. C₆H₅COCH₃

Amongst the following carboxylic acids the strongest acid is:

1. benzoic acid

2. 0-methoxybenzoic acid

3. m-nitrobenzoic acid

4. p-nitrobenzoic acid

In the following reaction:

The structure of the major product 'X' is

(1)

(2)

(3)

(4)

$\stackrel{{\mathrm{LiAlH}}_4}{\to }$Major product is:-

1.

2.

3.

4.

$\stackrel{\mathrm{HCN}}{\to }$A $\underset{\left(excess\right)}{\overset{KCN}{\to }}$B;B is

(1)

(2)

(3)

(4)