In Kjeldahl's method of estimation of nitrogen, K₂SO₄ acts as:

1. An oxidising agent

2. Catalytic agent

3. Hydrolysing agent

4. Boiling point elevator

Sodium nitroprusside when added to an alkaline solution of sulphide ions produces a colouration which is:

1. Red

2. Blue

3. Brown

4. Purple

Most stable radical is

1.		2.
3.		4.

Consider the acidity of the following carboxylic acids

(i) PhCOOH

(ii) o-NO₂C₆H₄COOH

(iii) p-NO₂C₆H₄COOH

(iv)m-NO₂C₆H₄COOH

1. i>ii>iii>iv

2. ii>iv>iii>i

3. ii>iv>i>iii

4. ii>iii>iv>i

The correct order of basicities of the following compounds is:

1. 2>1>3>4         2. 1>3>2>4

3. 3>1>2>4         4. 1>2>3>4

The decreasing order of stability of the carbocations among the following is:

1. I>II>III          2. II>III>I

3. III>I>II          4. II>I>III

The IUPAC name of the compound given below is:

1. 1-Bromocyclohexanecarboxylic acid

2. 3-Bromocyclohexanoic acid

3. 3-Bromoheptanoic acid

4. 3-Bromocyclohexane-1-carboxylic acid

In the following compounds,

The order of basicity is:

1. IV>I>III>II

2. III>I>IV>II

3. II>I>III>IV

4. I>III>II>IV

Which of the following is the most stable carbocation

1. 

2. 

3. ${\mathrm{CH}}_2=\mathrm{CH}-\stackrel{\oplus }{\mathrm{C}}{\mathrm{H}}_2$

4. ${\mathrm{CH}}_2=\stackrel{\oplus }{\mathrm{C}}\mathrm{H}$

A solution of (+)-2 chloro-2-phenylethane in toluene racemizes slowly in the presence of small amount of SbCl₅ due to formation of

1. Carbanion           

2. Carbene

3. Free radical          

4. Carbocation