Biology Microbes in Human Welfare Statement Based Questions Single Correct MCQ
Published on: August 21, 2026

Incorrect statement is/are –

A
Antibiotics, Cyclosproin A, Statins and Streptokinase etc. are produced by some microbes and can kill or retard the growth of other microbes. A and E
B
Bottled juices are clarified by the use of Lipases whereas pectinases and proteases are used in detergent formulations and are helpful in removing oily stains from the laundary. B, C and E
C
A major component of municipal waste water is human excreta. It contains large amount of organic matter and microbes. A, B and D
D
In aetobic sludge digesters, aerobic bacteria grow anaerobically, digest the anaerobic bacteria and fungi. (E) Secondary treatment significantly reduces the BOD of the effluent becauses, while growing microbes consume the major part of organic matter in the effluent. C and D

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