Question

Which one of the following statements pertaining to pollutant is correct?

• A. DDT is non-biodegradable pollutant.
• B. Excess fluoride in drinking water causes osteoporosis.
• C. Excess cadmium in drinking water may cause black foot disease.
• D. Methyl mercury in water may cause 'itai itai' disease.

Answer 1

The correct option is A DDT is non-biodegradable pollutant.

DDT is an organochlorine pollutant used as insecticides and has several environmental impacts. Chemicals in DDT do not degrade easily and remain in the soil for a long time after its application because it cannot be broken down by the action of microorganism and thus persists and is lethal to human and animal life.

A. DDT is a non-biodegradable pollutant.

B. Excess fluoride in drinking water causes teeth mottling.

C. Excess cadmium in drinking water may cause Itai-Itai disease.

D. Methyl mercury in water may cause Minamata disease.

Hence, the correct answer is 'DDT is non-biodegradable pollutant'.