Question

(a) Write the formula of the functional group present in carboxylic acids.
(b) Name the functional group present in CH₃ – C ≡ CH.
(c) Name the functional groups present in the following compounds:
(i) CH₃CHO
(ii) CH₃CH₂COOH
(iii) CH₃COCH₃
(iv) CH₃CH₂CH₂OH

Answer 1

(a) The formula of the functional group present in carboxylic acids is R-COOH (where, R is an alkyl group)

(b) The functional group present in CH₃ – C ≡ CH. is the alkyne group (triple bond).

(c)
(i) The functional group present in CH₃CHO is the formyl group (-CHO).

(ii) The functional group present in CH₃CH₂COOH is the group of carboxylic acids (-COOH).

(iii) The functional group present in CH₃COCH₃ is the carbonyl group (-CO-).

(iv) The functional group present in CH₃CH₂CH₂OH is the alcohol (hydroxyl) group (-OH).