Amines MCQs for NEET — Chemistry Questions with Answers

(A) Beryllium and aluminium have diagonal relationship.

(B) $M+\left(x+y\right)N{H}_3\to {\left[M{\left(N{H}_3\right)}_x\right]}^{+}+{\left[e{\left(N{H}_3\right)}_y\right]}^{-}$

    Above 3M concentration, the solutions are no longer blue but are bronze/copper-bronze
            coloured with a metallic luster due to formation of metal ion clusters.

(C). Na reacts with alcohol

      $Na+C_2{H}_{5}OH\to C_2{H}_{5}ONa+\frac{1}{2}{H}_2$

(A). In air, a layer of $N{a}_{2}O$, NaOH and $N{a}_{2}C{O}_3$ is formed on its surface which loses its lustre.

      $4Na+O_2\to 2N{a}_{2}O\stackrel{2H_{2}O}{\to }4NaOH\stackrel{2C{O}_2}{\to }2N{a}_{2}C{O}_3+2H_{2}O$

(C) $N{a}_{2}O+H_{2}O\to 2NaOH$

     $2N{a}_{2}O\stackrel{400°C}{\to }N{a}_2{O}_2+2Na$

(C). The hydration energy of the ions of alkaline earth metals ($M^{2+}$) is nearly 4 or 5 times greater than that of alkali metals because of their small size and increased charge.

(c) NH₄Cl+ NaNO₂→NH₄NO₂+NaCl
NH₄NO₂ $\stackrel{∆}{\to }$ N₂↑ +2H₂O

Ba(N₃)₂ →Ba+3N₂↓ 
2NH₄Cl+CaO→CaCl₂+2NH₃↑+H₂O)

(a)   ${\mathrm{NF}}_3+{\mathrm{H}}_2\mathrm{O}\underset{}{\to }\mathrm{S} {\mathrm{NCl}}_3+{\mathrm{H}}_2\mathrm{O}\underset{}{\to }{\mathrm{S}}_{{\mathrm{N}}^2}$

(b)    ${\mathrm{P}}_4{\mathrm{O}}_{10}\underset{}{\to }{\mathrm{S}}_{{\mathrm{N}}^{\mathrm{AE}}} {\mathrm{SiCl}}_4\underset{}{\to }{\mathrm{S}}_{{\mathrm{N}}^2}$

(c)    ${\mathrm{SF}}_4, {\mathrm{TeF}}_6\underset{}{\to }\mathrm{Both} {\mathrm{S}}_{{\mathrm{N}}^2}$ 

(d)    ${\mathrm{SiCl}}_4, {\mathrm{SiF}}_4\underset{}{\to }\mathrm{Both} {\mathrm{S}}_{{\mathrm{N}}^2}$

(d)  ${\mathrm{PH}}_3$ (Lewis base) can react with ${\mathrm{B}}_2{\mathrm{H}}_6$ (Lewis acid).

(d)    In ${\mathrm{NCl}}_3$ molecule, ${\mathrm{H}}_2\mathrm{O}$ molecule attacks on less electronegative Cl-atom 

         rather than central N-atom. ${\mathrm{NCl}}_3+3{\mathrm{H}}_2\mathrm{O}\underset{}{\to }{\mathrm{NH}}_3+3\mathrm{HOCl}$