The product [A] formed in the reaction;

$2{\mathrm{C}}_5{\mathrm{H}}_5-\mathrm{CN}\underset{{\mathrm{Et}}_2\mathrm{O}}{\overset{\mathrm{Na}}{\to }}\left[A\right] \mathrm{is}:$

1. 

2. 

3. 

4. 

 

ln the reaction, 

The product is: 

1. 

2. 

3. 

4. 

In the compound given below,

the correct order of acidic nature of the positions (X), (Y) and (Z) is: 

(1) Z>X>Y

(2) X>Y>Z

(3) X>Z>Y

(4) Y>X>Z

The alkene formed as a major product in the given elimination reaction is:   

1. 

2. $C{H}_2=C{H}_2$     

3. 

4.                           

In the following reaction, the product X is:

$\underset{Cone.H_{2}S{O}_4}{\overset{cone.HN{O}_3}{\to }} x$

1. 

2. 

3. 

4. 

Biuret test is not given by: 

(1) proteins

(2) carbohydrates

(3) polypeptides

(4) urea

The product formed by the reaction of C₆H₅CN and CH₂N₂ is:

1. 

2. 

3. 

4. None of these

Choose the correct statement from the ones given below for two anilium in:

1. II is not an acceptable canonical structure because carbonium ions are less stable than ammonium ions

2. II is not an acceptable canonical structure because it is non-aromatic

3. II is not an acceptable canonical structure because the nitrogen has 10 valence electrons

4. II is an acceptable canonical structure

When nitrobenzene is treated with Br₂ in presence of FeBr₃, the major product formed is m-bromonitrobenzene. Statements which are related to obtain the m-isomer are:

(1) the relative electron density on meta carbon is more than that of ortho and para positions

(2) loss of aromaticity when Br⁺ attacks at the ortho and para positions and not at meta position

(3) easier loss of H⁺ to regain aromaticity from the meta positions than from ortho and para positions

(4) none of the above

Potassium thiocyanate solution reacts with ferric chloride to give:

(1) pink colour

(2) deep blue colour

(3) green colour

(4) blood-red colour