Which is the coldest planet?
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______ is the time taken by the earth to return to a given point in its orbit with reference to a fixed star.
The instrument used to measure Blood Pressure is
Which of the following is man-made fibre?
Which of the following is the uppermost layer of the atmosphere?
Which of the following is biodegradable?
Any substance that does not cause pollution and is capable of getting decomposed by any living organism is called as Bio degradable. Human & animal excreta, plant wastes etc... come under bio-degradable.
The Great Smog of 1952 was a severe air-pollution event which affected _______.
According to the distance of planets from the Sun, which of the following order is correct?