Sandmeyer Reaction

Q.

Name the organic compound prepared by the following reaction:

${\mathrm{CaC}}_2+2{\mathrm{H}}_2\mathrm{O}\to$

Q.

The benzene diazonium chloride needed for the sandmeyer reaction to produce aromatic halides is produced by diazotisation reaction that takes place at

1. $0-5^{\circ }$C

2. $5-{10}^{\circ }$C

3. $10-{15}^{\circ }$C

4. $15-{20}^{\circ }$C

Q.

In the above process product A is

[Kerala (Engg.) 2002]

1. Fluorobenzene

2. Benzene

3. 1, 4-difluorobenzene

4. 1, 3-difluorobenzene