A) \[N{{O}_{2}}\]
B) CO
C) DDT
D) phenol
Correct Answer: D
Solution :
[d] Chemical pollutant causes changes in the chemical properties of water. They mainly effect the pH, acidity, alkalinity etc. of water. They are chlorine,\[S{{O}_{2}},\] \[{{H}_{2}}S,\] phenol, etc.
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