Hydrolysis of Cyanides

Q.

1. Reaction between CH₃MgBr with CO₂ followed by hydrolysis

2. Oxidation of ethanol with PCC in CH₂Cl₂

3. 

4. All the above

Q. The end product B in the sequence of reactions $R-X\stackrel{C{N}^{-}}{\to }A\stackrel{NaOH}{\to }B$ is

1. An alkane

2. A carboxylic acid

3. Sodium salt of carboxylic acid

4. A ketone

Q. $C{H}_{3}C{H}_{2}I\stackrel{KCN}{\to }\underset{major}{X}\underset{excess}{\overset{H_{2}O,H^{+}}{\to }}Y\stackrel{LiAl{H}_4}{\to }Z$
In the given reaction:

1. $X$ is $C{H}_{3}C{H}_{2}NC$
2. $Y$ is $C{H}_3-C{H}_2-\stackrel{O}{\stackrel{||}{C}}-N{H}_2$
3. $Z$ is $C{H}_{3}C{H}_{2}C{H}_{2}OH$
4. $Z$ gives iodoform test

Q.

tert-Butyl alcohol, when heated with $H_{2}S{O}_4$, gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid?

1 - $H_3{O}^{+},$ hydrolysis

2 – treatment with $C{N}^{-}$

3 – $HBr,$ peroxide

1. 3; 2; 1

2. 2; 1; 3

3. 3; 1; 2

4. 1; 2; 3

Q. The end product B in the sequence of reactions $R-X\stackrel{C{N}^{-}}{\to }A\stackrel{NaOH}{\to }B$ is

1. An alkane

2. A carboxylic acid

3. Sodium salt of carboxylic acid

4. A ketone

Q.

tert-Butyl alcohol, when heated with $H_{2}S{O}_4$, gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid?

1 - $H_3{O}^{+},$ hydrolysis

2 – treatment with $C{N}^{-}$

3 – $HBr,$ peroxide

1. 3; 2; 1

2. 2; 1; 3

3. 3; 1; 2

4. 1; 2; 3