Arsenic problem in India is primarily due to

Overexploitation of coal in Bihar and Bengal

Overexploitation of ground water in the affected areas

Overexploitation of arsenopyrite in the hinterland

Overexploitation of surface water in the affected areas

Answer : Option B

Explanation :

Arsenic contamination of groundwater is often due to naturally occurring high concentrations of arsenic in deeper levels of groundwater. It is due to the use of deep tube wells for water supply in the Ganges Delta, causing serious arsenic poisoning to large numbers of people.