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

Total number of stereoisomers of the compound:-

1. 10

2. 8

3. 6

4. 4

The effect that makes 2,3–dimethyl-2-butene more stable than 2-butene is-

1. Resonance

2. Hyperconjugation

3. Steric effect

4. Inductive effect

The IUPAC name of the above mentioned compound is - 

1. Cyclohexylidenemethanone

2. Cyclohexylidemethanone

3. Cyclohexylidenylmethanone

4. Cyclohexdenemethanone

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

Which carbocation is the most stable among the options provided?

1.		2.
3.		4.

The aromatic compound among the following is:-

1.		2.
3.		4.

The molecule that exhibits non-planarity is:

1.		2.
3.		4.

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

1.		2.
3.		4.