The reaction of benzene diazonium chloride with $Cu$ powder and $HCl$ is known as:

What is the product $Z$ in the following reaction sequence?
$C_6H_5N_2Cl$ $\xrightarrow{Cu_2Cl_2/HCl} X$ $\xrightarrow{CH_3Cl/Na, \text{dry ether}} Y$ $\xrightarrow{Cl_2/Fe, \text{dark}} Z$

Nitration of phenyl benzoate yields the product

Which one of the following reactions is $NOT$ possible?

Which of the following reactions is a $Wurtz-Fittig$ reaction?

Which reaction shows the correct major product?