The pair among the following that does not contain position isomers is -

1.
2.
3.
4.

Which of the following compound exhibit optical isomerism?

1. 

2. 

3. 

4. All of these

Arrange the following in order of their reactivity toward electrophilic substitution reaction:

I.		II.
III.		Iv.

Which of the following compound requires minimum energy for free rotation across double bond between ring :

1.		2.
3.		4.

The molecule that exhibits non-planarity is:

1.		2.
3.		4.

The aromatic compound among the following is:-

1.		2.
3.		4.

Which carbocation is the most stable among the options provided?

1.		2.
3.		4.

The presence of a halogen on the benzene ring in a nitration reaction leads to:

The pair of structures that does not represent isomers is:

1.		2.
3.		4.

Which among these can exhibit tautomerism?

1. a only

2. b only

3. c only

4. a and c