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प्रश्न
Increase in BOD in water leads to ______.
पर्याय
increase in the dissolved O2 conc.
decrease in the dissolved O2 conc.
maintenance of dissolved O2 conc. at the same level
no effect on dissolved O2 conc
MCQ
रिकाम्या जागा भरा
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उत्तर
Increase in BOD in water leads to decrease in the dissolved O2 conc.
Explanation:
A higher BOD means decomposers consume more dissolved oxygen while breaking down organic matter. Therefore, dissolved oxygen decreases; it does not increase or remain unchanged.
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