In November 2017, who launched ‘Grahak Sadak Koyla Vitaran App’ that aims to benefit customers of Coal India Limited (CIL)?
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Who appoints Chief Election Commissioner of India?
Raymond Samuel Tomilson is famous for developing which of the following?
________________ refers to the superposing of two or more coherent waves to produce regions of maxima and minima in space, according to the principle of superposition.
Find the position of the image formed by a concave mirror when the object is placed between P and F?
Ganga is a result of confluence of rivers Bhagirathi and Alakananda at which place ?
Rodrigo "Digong" Duterte emerged winner in 2016 presidential elections of which country ?
Who developed the theory of relativity?