Q. With reference to chromium contamination, consider the following statements:
1.Tanneries can be a source of chromium contamination in soil and groundwater.
2.The WHO provisional guideline value for total chromium in drinking water is 0.05 mg/L.
Which of the statements given above are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation:

  • Statement 1 is correct: Tanneries use chromium compounds during leather processing. Improper treatment or disposal of tannery waste can contaminate soil and groundwater with chromium.
  • Statement 2 is correct: The WHO provisional guideline value for total chromium in drinking water is 0.05 mg/L, equivalent to 50 µg/L (50 ppb).

Source- TH

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