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Pollutants and Their Classification

In highly pol...

Question

In highly polluted water BOD value shows a range of

A

17-50 ppm

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B

10-14 ppm

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C

7-12 ppm

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D

2-8 ppm

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Solution

The correct option is A 17-50 ppm
BOD (Biological Oxygen Demand) is less than 5ppm in clean water, where as highly polluted water have a BOD value of 17ppm are more

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Similar questions

Q. The value of biological oxygen demand(BOD) of highly polluted water is:

Q. Assertion :The amount of BOD in the waters is a measure of the amount of organic material in the water. Reason: Clear water has BOD less than 5 ppm whereas highly polluted water have BOD value of 17 ppm or more.

Q. Arrange the following options in ascending order of their BOD value:

(I) Sample of highly polluted pond water
(II) Sample of unpolluted pond water
(III) Distilled water

Q. Arrange according to ascending order of BOD.
(a) Highly polluted pond water
(b) Unpolluted pond water
(c) Distilled water

Q. Statement 1 : BOD represents the amount of dissolved oxygen that would be consumed if all the organic matter in one litre of water were oxidised by microorganisms.
Statement 2 : High value of BOD indicates that water is highly polluted by organic matter.

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Pollutants and Their Classification

Standard XII Chemistry

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