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Lake water contains more __________ due to the biological oxidation of the organic matter.

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Lake water contains more __________ due to the biological oxidation of the organic matter.

(a) Oxygen

(b) Carbon dioxide

(c) Nitrogen

(d) Carbon monoxide

I got this question by my school principal while I was bunking the class.

Question is from Sources, Impurities and Hardness of Water in chapter Water of Applied Chemistry

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Correct choice is (b) Carbon dioxide

Explanation: Lake Water contains more amount of carbon dioxide due to the biological oxidation of the organic matter present at the bottom of the lake.

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