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What Is The Role of Ultraviolet (UV) Radiation In The Water Purification Systems?

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

1 It inactivates /kills the harmful microorganisms in water.

2 It removes all the undesirable odours from the water.

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

Which of the statements given above is/are correct?(2012)

a) 1 only

b) 2 and 3 only

c) 1 and 3 only

d) 1, 2 and 3

Answer: A

Ultraviolet water purification is the most effective method for disinfecting bacteria from the water. Ultraviolet (UV) rays penetrate harmful pathogens in your home’s water and destroy illness-causing microorganisms by attacking their genetic core (DNA).


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