Isomerism

The incorrect statement regarding the geometrical isomers of 2-butene is :

1. cis-2-butene and trans-2-butene are not interconvertible at room temperature.
2. trans-2-butene is more stable than cis-2-butene.
3. cis-2-butene has less dipole moment than trans-2-butene.
4. cis-2-butene and trans-2-butene are stereoisomers.

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below :

1. (A) is true but (R) is false
2. (A) is false but (R) is true
3. Both (A) and (R) are true and (R) is the correct explanation of (A)
4. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)

Match List - I with List - II. Choose the correct answer from the options given below :

1. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
2. (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
3. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
4. (A)-(I), (B)-(III), (C)-(IV), (D)-(II)

The number of different chain isomers for C7H16 is .

Number of optical isomers possible for 2-chlorobutane .

Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is .

Number of geometrical isomers possible for the given structure is/are . [figure]

2-chlorobutane + Cl2 C4H8Cl2 (isomers) Total number of optically active isomers shown by C4H8Cl2, obtained in the above reaction is .

Which one of the following will show geometrical isomerism?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Highest enol content will be shown by:

1. [figure]
2. [figure]
3. [figure]
4. [figure]