Which of the following explains the greater stability of 2,3-dimethylbut-2-ene compared to 2-butene?

1. Resonance

2. Hyperconjugation

3. Electromeric effect

4. Inductive effect

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

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