The compound/s which will show significant intermolecular H-bonding is/are :

Which one of the following compounds is not aromatic?

The number of stereoisomers possible for 1, 2-dimethyl cyclopropane is :

Given below are two statements :

Statement I : Hyperconjugation is a permanent effect.

Statement II : Hyperconjugation in ethyl cation $$\left( {C{H_3} - \mathop C\limits^ + {H_2}} \right)$$ involves the overlapping of $${C_{s{p^2}}} - {H_{1s}}$$ bond with empty 2p orbital of other carbon.

Choose the correct option :