1 Answers

Option 3 : Only C

Explanation:

Advantages of Activated carbon:

i) Due to its adsorption property it removes taste, colour and odour

ii) It removes phenol type impurity

iii) When used in coagulants, it aids in coagulation

iv) It reduces the chlorine demand of water because some amount of chlorine is used to oxidise organic matter which is removed by activated carbon

v) Its overdose is not harmful
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