what is the role of ultraviolet rays in the purification of water in modern water purifiers?

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Solution

Ultraviolet rays are passed through water to kill germs. This is normally done after filtration.

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100. What is the role of ultraviolet (UV) radiation in the water purification systems? [2012-I]

i) It inactivates /kills the harmful microorganisms in water.

ii) It removes all the undesirable 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?

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