Which of the following properties remains identical for all isomers of a compound?

1. Structure

2. Physical properties

3. Chemical properties

4. Molecular formula

Why does but-2-ene exhibit cis-trans isomerism?

1. Rotation around the C₂-C₃ double bond

2. Rotation around the C₃-C₄ sigma bond

3. Rotation around the C₁-C₂ bond

4. Restricted rotation around the C=C bond

How many stereoisomers does this molecule have?           

CH₃CH=CHCH₂CHBrCH₃

1. 4       

2. 6       

3. 8       

4. 2

If optical rotation produced by the compound (i) is +52° then that produced by that the compound (ii) is:

1. -52°

2. +52°

3. 0°

4. unpredictable

Rotation of plane polarized light can be measured by:

1. manometer

2. calorimeter

3. polarimeter

4. viscometer