What is the role of ultraviolet (UV) radiation in the water purification systems ?

I. It inactivates/kills the harmfull microorganisms in water.

II. It removes all the undersirable odours from the water.

III. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water

Which of the statements given above is/are correct ?

A I only

B II and III only

C I and III only

D I, II and III

Answer & Explanation
Option: [A]

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