i. $\quad \mathrm{CO}_{2}+4 \mathrm{H}_{2} \xrightarrow[250^{\circ} \mathrm{C}]{\mathrm{Ni}}{ }^{\prime} \mathrm{X}+2 \mathrm{H}_{2} \mathrm{O}$

ii. $\quad {Ca}{OH}_{2}+{Cl}_{2} \xrightarrow{40^{\circ} {C}}{ }^{\prime} \mathrm{A}^{\prime}+\mathrm{H}_{2} {O}.$.

(i) $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Br}(\mathrm{aq})+\mathrm{NaOH}(\mathrm{alc}) \rightarrow \mathrm{NaBr}+\mathrm{A}+\mathrm{H}_{2} \mathrm{O}$

(ii) $\mathrm{A}+\mathrm{H}_{2} \xrightarrow[200^{\circ} \mathrm{C}]{\mathrm{Ni}} \mathrm{B}$

নিচের কোনটি দিয়ে সায়ানেট যৌগমূলক তৈরি হয়?

(i) $\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}+1} \mathrm{COOH}[\mathrm{n}=1]$

(ii) $\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}-2}[\mathrm{n}=3]$