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JEE Main 20163 April
Exam
JEE Main
Year
2016
Date
3 April
Subject
Chemistry
Chapter
Environmental Chemistry

JEE Main 2016 · 3 April · Chemistry · Environmental Chemistry

The concentration of fluoride, lead, nitrate and iron in a water...

The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000ppb,40ppb,100ppmand0.2ppm1000ppb, 40ppb, 100ppmand0 . 2ppm, respectively. This water is unsuitable for drinking due to high concentration of:

Options

  1. ANitrate
  2. BIron
  3. CFluoride
  4. DLead

Correct answer

A. Nitrate

Step-by-step solution

Parameters Maximum prescribed concentration in drinking water

Iron 0.2ppm0 . 2ppm

Fluroide 1.5ppm1 . 5ppm

Lead 50ppb50ppb

Nitrate 50ppm50ppm

Hence the concentration of nitrate in a given
water sample exceeds from the upper limit as
given above.
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