Question

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

• A. DDT is a non-biodegradable pollutant.
• B. Excess fluoride in drinking water causes osteoporosis.
• C. Excess cadmium in drinking water causes black foot disease.
• D. Methylmercury in water may cause "Itai Itai" disease.
• E. Both A and B.

Answer 1

The correct option is E Both A and B.

• Those pollutants, which cannot be broken down into simpler, harmless substances in nature, are called as non-biodegradable pollutants. For example- DDTplastics, polythene bags etc.
• Ingestion of excess fluoride, most commonly in drinking-water, can cause fluorosis which affects the teeth and bones.
• Pollution is the addition of harmful components in the environments which degrade its quality. The contaminants are also known as pollutant.
• Excess cadmium in drinking water causes itai-itai disease.
• Methylmercury in water may cause Minamata disease.

Thus, the correct answer is option E.