What are the main constitutents of dettol?

What is tincture of iodine? What is its use?

Explain why sweetener is predicted to become great commercial success.

Why should not medicines be taken without consulting doctors?

What are food preservatives?

Give one example of a substance used as narcotic.

Name a substance which can be used as an antiseptic as well as disinfectant. 

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

Name the sweetening agent used in the preparation of sweet for a diabetic patient.