In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.
Take away or alter the natural qualities of
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How many members of the Rajya Sabha are elected every two years?
The study of mountains is known as
Why does a black board appears black in colour?
During uniform motion of an object along a straight line, its ___________ remains constant with time
The atomic bomb is based on the principle of
_____ mirror is used in the headlights of cars.
Which one of the following is not the official language of the UNO?