Question
What is the role of Ultraviolet Radiation (UV)
in the water purification systems? 1. It inactivates/kills the harmful microorganisms in water 2. It removes all the undesirable odours from the water Select the correct answer;- (a) 1 only (b) 1 and 2 both (c) 2 only (d) Neither 1 and nor 2Solution
Activated carbon or activated charcoal is commonly used to remove undesirable odors from water. Activated carbon is a highly porous material that can effectively adsorb organic compounds that cause odor, such as hydrogen sulfide and volatile organic compounds (VOCs), as well as other impurities that may be present in the water.
More Science and technology Questions
40.5 ÷ [4/5 of (32 + 18) - 29/2] = ? ÷ 102
(1/2) – (3/5) + 3(1/3) = ? + (5/6)
(350/?) = 23 + 33
25% of 250 + 32% of 200 = ? ÷ √ 16
? = 20% of 1200 + 256
21% of 400 − 150 = ? − 77
172 - 92 + 121 - 74 = ?
24% of 150% of 500 + 140 = ? × 8
(22² × 8²) ÷ (92.4 ÷ 4.2) =? × 32
? = 65% of 40% of (20 × 250) − 200
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