Among the given chlorofluorocarbons are the compounds that are responsible for the ozone depletion which degrade ozone into moleculer oxygen. It is not a component of photochemical smog while other are component of smog.

Tranquiliser are the chemicals that reduce anxiety and mental tensional. Tranquiliser is the strain reliever also used for mild and essential component of sleeping pills. Thus, they are sometimes called psychotherapeutic drugs. Equanil, valium and serotonin and barbiturates (hypnotic) are some commonly used tranquilisers.

Compound which is added to soap to impart antiseptic properties is bithional.

Substances used for the treatment of malaria are antimalarials, e.g. quinine, chloroquine.

Birth control pills contain a mixture of estrogen and progesterone derivatives.

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Antacids neutralize the excess acid and raise the $$pH$$  to an appropriate level in the stomach. The most common antacids are weak bases such as sodium hydrogencarbonate, magnesium hydroxide, aluminium carbonate, etc.

Laundry soaps contain fillers like sodium rosinate, sodium silicate, borax and sodium carbonate. Sodium rosinate enhances lathering property of soap.

Except aspirin, all other drugs are habit forming.

All are characteristics of vanillin.