MCQ
Metal used for making electric cable is:
- ALead
- BSilver
- CTin
- ✓Copper
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$C_2H_5-Br\overset{AgCN}{\rightarrow}A\overset{H_2/Ni}{\rightarrow}B$
Product $B$ is

(Excess)
$N H_{3}+3 C l_{2} \rightarrow Y$
(Excess)
What is $X$ and $Y$ in the above reaction?
$Image$
$1.$ The structure of the product $\mathrm{I}$ is
A,B,C,D, $Image$
$2.$ The structures of compounds $J$ and $K$ respectively are
A,B,C,D, $Image$
$3.$ The structure of product $L$ is
A,B,C,D, $Image$
Give the answer question $1,2$ and $3.$