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Subject :NSO    Class : Class 8

The given diagram represents the plot of a river stream across a town. Water samples are collected from the river from 5 different places P, Q, R, S and T. The BOD of the collected water samples is shown in the following bar diagram.
a. On which of the places (P to T) the highest amount of organic material is released into the river water?
b. Where does a water treatment plant most likely built?


A a - R, b - Between P and Q
B a - S, b - Between Q and T
C a - Q, b - Between R and S
D a - S, b - Between P and R


Ans 1:

Class : Class 9
A

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