Which of the following is the cleanest source of energy?
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Bulb is a modification of which part of a plant?
In 1981, ISRO launched India's first geostationary satellite called -
Insulators have resistivity of the order of
A curved mirror where the reflecting surface is curved inwards is called a
A body of mass 3 kg accelerates from 10 m/s to 20 m/s in 5 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).
Which among the following is true for the Supreme Court of India ?
Who has been appointed as the Secretary General of the United Nations in January, 2017?