Q$\mathrm{.}1-)$ Which of the following groups is a meta

A$)-N{H}_2$

B$)-OC{H}_3$

C$)-Br$

D$)-C-=N$

E$)-OCO{C}_2{H}_5$

Q$\mathrm{.}2-)$ What kind of reagents can be used to obtain the following Diels Alder product?

Product:

b$-)$ and

d$-)$ and

Q$\mathrm{.}3-)$ Name the following compound: $C{H}_{3}C{H}_{2}NHC{H}_3.$

A$)$ aminopropane

B$)$ aminomethylethane

C$)$ methylaminoethane

D$)$ propylamine

E$)$ ethylmethylamine

Q$.4-)$ Suggest possible compounds for A$,$ B and C in the following scheme:

A$)A$ is $C{l}_2,B$ is $AlC{l}_3$ and $C$ is meta chloronitrobenzene

B$)A$ is $C{l}_2,B$ is $FeC{l}_3$ and $C$ is ortho chloronitrobenzene

C$)A$ is $C{l}_2,B$ is FeBr$3$ and $C$ is meta chloronitrobenzene

D$)A$ is $HCl,B$ is $AlC{l}_3$ and $C$ is para chloronitrobenzene

E$)A$ is $C{l}_2,B$ is AlBr$3$ and $C$ is meta chloronitrobenzene