4. d and f- block elements — Chemistry STD 12 Science — Question

Assertion $(A):$ Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines.

Reason $(R) :$ Aryl halides do not undergo nucleophilic substitution reaction.

In the light of the above statements, choose the correct answer form the options given below.

Statments $I:$ Maltose has two $\alpha$-D-glucose units linked at $C _{1}$ and $C _{4}$ and is a reducing sugar.

Statement $II:$ Maltose has two monosaccharides: $\alpha$-D-glucose and $\beta$-D-glucose linked at $C_{1}$ and $C_{6}$ and it is a non-reducing sugar.

In the light of the above statements, choose the correct answer from the options given below.

$\begin{array}{*{20}{c}}
  {\,\,\,\,\,C{H_3}{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} O{\mkern 1mu} } \\ 
  {\,\,\,|{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,{\mkern 1mu} {\mkern 1mu} ||} \\ 
  {C{H_3} - CH - C - OH} 
\end{array}$ $+ C{H_3} - N{H_2} \to 'A'\xrightarrow[\Delta ]{}'B'\xrightarrow{\begin{subarray}{l} 
  {\text{LiAl}}{{\text{H}}_4} \\ 
  {\text{(excess)}} 
\end{subarray} }'C'$ 

The final product $‘C’$ will be