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NTA Abhyas JEE Main2020ChemistryEnvironmental ChemistryPractice

The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of

Options

  1. AIron
  2. BFluoride
  3. CLead
  4. DNitrate

Correct answer

D. Nitrate

Step-by-step solution

Parameters Maximum prescribed conc. in drinking water Iron 0.2 ppm Fluoride 1.5 ppm Lead 50 ppb Nitrate Hence the concentration of nitrate in a given water sample exceeds from the upper limit as given above.

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