Which of the following pairs is NOT correctly matched?
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The centre of a cyclone is a calm area, it is called the ________ of the storm.
The boundary between Earth's crust and mantle is _____.
The large collection of stars, dust and gas held together by gravitational attraction between components is known as
Which is used as an Air pollution indicator?
Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?
The value of g on the moon is 1/6th of the value of g on the earth. If a man can jump 1.5 m high on the earth, on the moon, be can jump up to a height of
What is the name of the first Super Computer of the world?