Explain the causes and management of arsenic pollution in India.

The causes of arsenic pollution are -

Mining, smelting of non-ferrous metals and burning of fossil fuels are the major industrial processes that contribute to anthropogenic arsenic contamination of air, water and soil. Historically, use of arsenic-containing pesticides has left large tracts of agricultural land contaminated. The use of arsenic in the preservation of timber has also led to contamination of the environment.

Elemental arsenic is produced by reduction of arsenic trioxide (As2O3) with charcoal. As2O3 is produced as a ____ ________ _________ _____ _______ _______ __________ _________.
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