Are the words in brackets correct? If not, correct it.

Question

1. Aldehydes and ketones are [less] polar than hydrocarbons.
I think aldehydes and ketones are polar, so should I change it to "more"?

2. [Hydrocarbons] have stronger intermolecular forces than aldehydes and ketones.
I had no ideas about that.

Thanks for helping out.

Answer 1

Your answer to #1 is correct and you should change it to "more". If you think about #1, you should know that #2 is false. Think about it. If aldehydes and ketones are more polar molecules than alkanes, then wouldn't aldehydes and ketones have stronger intermolecular forces.

Answer 2

For #2, should I change "hydrocarbons" to "alcohols"?
Thank you.

Answer 3

http://www.chemguide.co.uk/organicprops/carbonyls/background.html