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JEE Main 202131 AugustMorning Shift

Exam: JEE Main
Year: 2021
Date: 31 August
Shift: Morning Shift
Subject: Chemistry
Chapter: Environmental Chemistry

JEE Main 2021 · 31 August · Morning Shift · Chemistry · Environmental Chemistry

BOD values (in ppm ) for clean water (A) and polluted water (B) are...

BOD

values (in

ppm

) for clean water (A) and polluted water (B) are expected respectively as:

Options

A $A 17$
B $A > 50, B < 27$
C $A > 15, B > 47$
D $A > 25, B < 17$

Correct answer

A. $A 17$

Step-by-step solution

Clean water would have

BOD

a value of less than,

5ppm

whereas highly polluted water could have a

BOD

value of

17ppm

or more.

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