Question

Match the pollutant in List I with its maximum permissible limit in drinking water given in List II.

• A. A-I, B-II, C-I
• B. A-II, B-I, C-III
• C. A-III, B-I, C-II
• D. A-III, B-II, C-I

Hint:

When matching pollutants with their permissible limits, remember that ppb (parts per billion) is typically used for more toxic substances, while ppm (parts per million) is used for substances like Sulphate and Nitrate.

Answer 1

The Correct Option is C

List I: Pollutants in drinking water and their maximum permissible limits:
- Lead (A): The maximum permissible limit of Lead in drinking water is 50 ppb (part per billion). So, A matches with III.
- Sulphate (B): The maximum permissible limit of Sulphate in drinking water is 500 ppm (parts per million). So, B matches with I.
- Nitrate (C): The maximum permissible limit of Nitrate in drinking water is 50 ppm. Hence, C matches with II.
Thus, the correct match is A-III, B-I, C-II.