Question

8.
Assertion(A): The content of degradable substances in water is expressed by
special index called 'BOD'.
Reason (R): BOD represents the amount of oxygen needed by aerobic bacteria
to decompose waste.
A) Both A and R are correct and R is the correct explanation for A
B)Both A and R are correct but R is not the correct explanation for A
C) A is correct and R is incorrect
D A is incorrect and R is correct
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Answer 1

$\huge\fcolorbox{aqua}{lime}{Answer}$

Both A and R are correct and R is the correct explanation for A