When propanoic acid is treated with aqueous sodium bicarbonate, CO₂ is liberated. The ‘C’ of CO₂ comes from:

1. Carboxylic acid group

2. Methylene group

3. Bicarbonate

4. Methyl group

In the reaction

${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO}\underset{\mathrm{agent}}{\overset{\mathrm{oxidizing} }{\to }}$
${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{COOH}$

the oxidizing agent can be

1. Alkaline KMnO₄

2. Acidified K₂Cr₂O₇

3. Benedict’s solution

4. All of the above

The appropriate reagent for the transformation is

1. Zn (Hg)/HCl

2. NH₂–NH₂/OH^–

3. Both 1. and 2.

4. None of the above

In a Cannizzaro’s reaction, the intermediate that will
be the best hydride donor is

What is the product (Y) formed in the following sequence of reactions?

$\underset{\mathrm{oxidation}}{\overset{\mathrm{vigorous}}{\to }}X\underset{\mathrm{heating}}{\overset{\mathrm{Dry}}{\to }}$

1.
2.
3.
4.

An organic compound (A) (MF C₄H₁₀O) upon dehydrogenation gives a compound (B) which forms phenyl hydrazone with phenylhydrazine and both the compounds (A) and (B) respond to iodoform test. Hence, the compound (A) is

The major product of the following reaction is:

$\stackrel{\mathrm{strong} \mathrm{heating}}{\to }$

1.  

2.  

3.  

4.  

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields :

1. Ethyl butyrate

2. Acetoacetic ester

3. Methyl acetoacetate

4. Ethyl propionate

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