Aldehydes Ketones And Carboxylic Acid 01 Ques2

Question: Which of the following has the carbonyl group at the end of the carbon chain?

Options:

A) Acetone

B) Propanal

C) 3-Pentanone

D) 4-Methyl-2-pentanone

Show Answer

Answer: b

Explanation:

A) Acetone has the carbonyl group on the second carbon ($CH_3COCH_3$).

B) Correct. Propanal has the carbonyl group at the end of the carbon chain ($CH_3CH_2CHO$).

C) 3-Pentanone has the carbonyl group on the third carbon ($CH_3CH_2COCH_2CH_3$).

D) 4-Methyl-2-pentanone has the carbonyl group not at the end of the carbon chain ($CH_3CH_2COCH_2CH_3$).