Assertion `:-` Following amide exist in two structural forms.

Reason `:-` Rotation about carbon`-`Nitrogen bond is restricted due to resonance.

Assertion: There is evidence for existence of N -methylacetamide in two structural forms I and II as shown below: Reason: Rotation about carbon-nitrogen bond is restricted due to resonance.

Explain why rotation about carbon-carbon double bond is hindered ?

Assertion : All compounds having C=C bond exhibit geometrical isomerism . Reason : Rotation about C=C bond is restricted

The restricted rotation about carbon-carbon double bond in 2-butene is due to

The restricted rotation about carbon-carbon double bond in 2-butene is due to

Assertion:- All compounds having C=C bond exhibit geometrical isomerism Reason:- Rotation about C=C is restricted

Assertion:- All compounds having C=C bond exhibit geometrical isomerism Reason:- Rotation about C=C is restricted

Which of the following has no hindered rotation about carbon-carbon bond?