Which of the following is used in the preparation of a pesticide?
Naphthalene balls
Coal tar is a dark black coloured liquid.It is used in the preparation of organic compounds like explosives, pesticides, dyes, drugs, artificial fibres etc.Naphthalene or mothball is a white solid with a pungent odour derived from the distillation of coal tar. It sublimes into a pungent toxic smell which drives away insects and moths.