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Q. Green house effect is the heating up of the Earth's atmosphere which is due to
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Q. Pressure Cooker cooks faster because
Q. During hot weather, the fan produces a feeling of comfort. This is because
Q. The half-life of a radioactive substance depends upon
Q. Which of the following is the S.I. unit of density?
Q. Nautical mile is a unit of distance in
Q. Mud houses are cooler in summers and warmer in winters as compared to brick houses because
Q. It is difficult to cook rice
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