Question

Which one of the following statements about the physical properties of alkenes is false?

• A. Alkenes have a lower density than water.
• B. The density of alkenes increases with the number of C- atoms.
• C. Cis/trans isomerism slightly affects density of alkene.
• D. Boiling point and densities are correlated in case of alkenes.

Answer 1

The correct option is B The density of alkenes increases with the number of C- atoms.

Alkenes have densities less than 1 g/ml and are therefore less dense than water. And all other statements are true apart from - 'The density of alkenes increase with the number of C- atoms' as density is structural dependent. So, it will depend upon structure of alkenes.