Cocaine is

Which among the following is a bactericidal antibiotic?

Bithionol is added to soaps to impart antiseptic properties. The number of $-OH$ and $-Cl$ groups in its structure are respectively

Which of the following is used as an antihistamine?

If water contains dissolved calcium hydrogencarbonate,out of soaps and synthetic detergents which one will you use for cleaning clothes?

Synthetic detergents have an advantage over usual soaps regarding cleansing power. However,the long-term use of synthetic detergents creates environmental pollution. How can the pollution caused by synthetic detergents be minimized? Classify the detergents according to their chemical nature.