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Question : A: As the amount of dissolved oxygen in water decreases, BOD increases. R: Microorganisms involved in biodegradation of organic matter requires a lot of dissolved O_(2).

Answer»

A. Both ASSERTION and REASON are true and Reason is a correct EXPLANATION of the Assertion.
B. Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion
C. Assertion is true but Reason is false.
D. Assertion is false but Reason is true. 

Answer :A


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