Among the following the most stable carbocation is:

1.		2.
3.		4.

Silver sulphate solution is used to separate:

1. Nitrate and bromide

2. Nitrate and chlorate

3. Bromide and iodide

4. Nitrate and nitrite

The IUPAC name of  is:

1. 2,6-Dimethylhepta-2, 5-dienoic acid

2. 3,7-Dimethylhepta-2, 5-dienoic acid

3. 1-Hydroxy-2, 6-dimethylhepta-2, 5-dienone

4. None of the above

The IUPAC name of the given compound is:

 

1. Ethyl 2-methylprop-2-enoate

2. Ethyl 2-methylprop-1-enoate

3. 1-Ethoxy 2-methylprop-2-enoate

4. 1-Ethoxy 2-methylprop-2-enal

A compound that does not give a positive test in Lassaigne’s test for nitrogen is-

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