Who has been appointed as the Secretary General of the United Nations in January, 2017?
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Black soil is also known by which of the following name ?
A famous Shiva temple, Pashupatinath is in
Which of the following is the cleanest source of energy?
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