Isobutyraldehyde on reaction with formaldehyde and \(K_{2}CO_{3}\) gives compound \('A'\). Compound \('A'\) reacts with \(KCN\) and yields compound \('B'\), which on hydrolysis gives a stable compound \('C'\). The compond 'C' is

Q. An organic compound (A) gives positive Liebermann reaction and on treatment with $CHC{l}_3/KOH$ followed by hydrolysis gives (B) and (C) ,. Compound (B) gives colour with Schiff's reagent but not (C), which is steam - volatile. (C) on treatment with $LIAl{H}_4$ gives (D), $C_7{H}_8{O}_2$ which on oxidation gives 9E), Compound (E) reacts with ${\left(C{H}_{3}CO\right)}_{2}O/C{H}_{3}COOH$ to give a pain - reliever (F), Give structure of (A) to (F) with proper reasoning.

Q. A compound $\left(A\right)$ of boron reacts with $NM{e}_3$ to give an adduct $\left(B\right)$ which on hydrolysis gives a compound $\left(C\right)$ and hydrogen gas. Compound $\left(C\right)$ is an acid. Identify the compounds $A,B$ and $C$. Give the reactions involved.

Q. Compound $C$ is :

Q. An organic compound ‘A’ on reaction with $N{H}_3$ followed by heating gives compound B. Which on further strong heating gives compound $C\left(C_8{H}_{5}N{O}_2\right)$. Compound C on sequential reaction with ethanolic KOH, alkyl chloride and hydrolysis with alkali gives a primary amine. The compound A is :

Q. Compound “A” on reduction with Sn/HCl gives “B” which on further reaction with $CHC{l}_3$ and alcoholic KOH gives compound “C”. The compound upon hydrolysis gives aniline. The compound “A” is :