Question

Excess nitrate present in drinking water, vegetables and fruits shall result in

• A. Methaemoglobinaemia
• B. Mottling of teeth
• C. Minamata disease
• D. Itai-itai

Answer 1

The correct option is A Methaemoglobinaemia

A. Methaemoglobin is caused due to toxicity of nitrates in body due to which the haemoglobin gets altered from its original statement and is unable to bind to oxygen.

B. Mottling of teeth is caused due to toxicity of fluorine in body due to which there is hypomineralization of tooth enamel. The teeth get damaged physically.

C. Minamata disease is a neurological syndrome caused due to toxicity of mercury in the body.

D. Itai-itai disease is caused due to toxicity of cadmium resulting in severe pain in joints and spine.

So, the correct answer is 'Methaemoglobinaemia'.