Home
Class 11
CHEMISTRY
Biochemical oxygen demand values of four...

Biochemical oxygen demand values of four water samples P, Q, R and S are respectively 100 ppm, 50 ppm, 150 ppm and 10 ppm. Arrange them in the descending order of their purity.

Text Solution

Verified by Experts

More the BOD value , more the extent of pollution and less the purity of water. Thus purity of water samples is in the order `S gt Qgt Pgt R` .
Promotional Banner

Similar Questions

Explore conceptually related problems

Dissolved oxygen values of four water samples A, B, C and D are respectively 6 ppm, 5 ppm, 1 ppm and 3 ppm. Which is more polluted?

The TLV values of four pollutants A, B, C and Dare 9ppm, 10ppm, 100ppm and 500 ppm respectively. The most toxic amount them is

The COD values of three water samples A,B and C are 60 ppm, 990 ppm and 120 ppm respectively. The most polluted water sample is

TLV values of four pollutants A, B, C and D are 2 ppm, 9 ppm, 20 ppm and 50 ppm. Among these four pollutants which one is the most toxic pollutant ? Why?

TLV values of four pollutants A,B,C and D are 2ppm, 9 ppm, 20 ppm and 50 ppm. Among these four pollutants which one is the most toxic pollutant ?