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

What colour is produced when sodium nitroprusside is added to an alkaline solution of sulfide ions?

1. Red

2. Blue

3. Brown

4. Purple

Which structure demonstrates the highest stability?

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

What is the relative order of basicity for the given-below compounds?

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