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JEE Main · 2019 · 08 Apr 2019 · Shift 2 · Environmental Chemistry

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The maximum prescribed concentration of copper in drinking water is:
  1. (A)0.5 ppm
  2. (B)3 ppm✓ Correct
  3. (C)5 ppm
  4. (D)0.05 ppm

Answer: (B)

Solution

The drinking-water guidelines, from the WHO and the Bureau of Indian Standards, set the maximum permissible concentration of copper at . Above this level the water becomes unsafe to drink, so the prescribed limit is .

JEE Main · 2019 · 08 Apr 2019 · Shift 2 · Single correct option

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