Give the structural formula of the following:
(i) ethanol.
(ii) 1-propanal.
(iii) ethanoic acid.
(iv) 1, 2 dichloroethane.

Explanation

`underset("1-Propanal")(H-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-overset(H)overset(|)C=O)`