Which of the following is Study of fossils ?
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Bridgmanite is
__________ acts as a shield absorbing ultraviolet radiation from the sun.
In 1981, ISRO launched India's first geostationary satellite called -
The 'solid waste' is also known as
The ancient Indian legal document 'Manusmriti' was written in ___.
Insulators have resistivity of the order of
In a hydrogen atom, an electron moves in an orbit of radius 5.0 x 10-11 m with a speed of 2.2 x 106 m/s. What is the equivalent current? (Electronic charge = 1.6 x10-19 C)