Nucleophilic addition reaction will be most favoured in-

1. $C{H}_{3}C{H}_{2}C{H}_{2}COC{H}_3$

2. $(C{H}_3{)}_{2}C=O$

3. $C{H}_{3}C{H}_{2}CHO$

4. $C{H}_{3}CHO$

A carbonyl compound reacts with hydrogen cyanide to form cyanohydrins which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is :

1. Acetaldehyde

2. Acetone

3. Diethyl ketone

4. Formaldehyde

In a set of reactions propanoic acid yielded a compound D. 

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}\stackrel{{\mathrm{SOCl}}_2}{\to }\mathrm{B}\stackrel{{\mathrm{NH}}_3}{\to }\mathrm{C}\underset{{\mathrm{Br}}_2}{\overset{\mathrm{KOH}}{\to }}\mathrm{D}$ 
The structure of D would be :

1. $C{H}_{3}C{H}_{2}C{H}_{2}N{H}_2$

2. $C{H}_{3}C{H}_{2}CON{H}_2$

3. $C{H}_{3}C{H}_{2}NHC{H}_3$

4. $C{H}_{3}C{H}_{2}N{H}_2$

The product formed in aldol condensation is :

1. A beta-hydroxy acid

2. A beta-hydroxy aldehyde or a beta-hydroxy ketone

3. An alpha-hydroxy aldehyde or ketone.

4. An alpha, beta unsaturated ester

Consider the following compounds : 
(i) C₆H₅COCl 
(ii)  

(iii)  

(iv)  

The correct decreasing order of their reactivity towards hydrolysis is :

1. (ii)>(iv)>(iii)>(i)

2. (i)>(ii)>(iii)>(iv)

3. (iv)>(ii)>(i)>(iii)

4. (ii)>(iv)>(i)>(iii)

A strong base can abstract an $\mathrm{\alpha }$- hydrogen from:

1.  Alkene

2.  Amine

3.  Ketone

4.  Alkane

Acetophenone when reacted with a base, C₂H₅ONa, yields a stable compound which has the structure

1.  

2.  

3.  

4.  

A reaction among the following tht donot result in the formation of carbon-carbon bonds is -

1. Reimer-tiemann reaction

2. Cannizzaro reaction

3. Wurtz reaction

4. Friedel-Crafts acylation