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.
Five friends, P, Q, R, S, and T, each have a different number of pets. P has more pets than Q but fewer than T. R has fewer pets than Q. S is not the on...
Six persons P, V, A, S, K and R have different weights. A is heavier than only one person. V is just heavier than R, who is heavier than S. K is heavier...
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.
Answer the questions based on the information given below.
In a school, there are seven students (F, G, H, I, J, K and L) of different heights....
A is more intelligent than B, B isn’t as intelligent as C. C is more intelligent than D but not as good as A. Who’s the most intelligent of them all...
What is the probable age of F?
There are 38 persons in a row, in which A is 8th from the left and B is 12nd from the right side of the row. Find out no of people between A and B.
- How many persons are taller than P?
Who is the tallest among all?
Read the directions carefully and answer the following questions.
There are six persons Yogesh, Prakash, Ramesh, Shyam, Ram, and Lokendra sitti...
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