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JEE Main 202330 JanuaryEvening Shift
Exam
JEE Main
Year
2023
Date
30 January
Shift
Evening Shift
Subject
Chemistry
Chapter
Environmental Chemistry

JEE Main 2023 · 30 January · Evening Shift · Chemistry · Environmental Chemistry

The water quality of a pond was analysed and its BOD was found to...

The water quality of a pond was analysed and its BODBOD was found to be 44. The pond has

Options

  1. AHighly polluted water
  2. BWater has high amount of fluoride compounds
  3. CVery clean water
  4. DSlightly polluted water

Correct answer

C. Very clean water

Step-by-step solution

The amount of BOD in the water is a measure of the amount of organic material in the water, in terms of how much oxygen will be required to break it down biologically.

Clean water has BOD value of less than 5 ppm whereas polluted water has a BOD value of 17 ppm or more.

So, the pond has very clean water.

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