________________ 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.
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The beach sands of Kerala are rich in
Which among the following neighbouring country of India is the largest producer of Opium in the World?
In November 2017, who launched ‘Grahak Sadak Koyla Vitaran App’ that aims to benefit customers of Coal India Limited (CIL)?
Bronze is an alloy of
___________ gases absorb long wave (infrared) radiation from the earth and emit it again towards the earth.
Which of the following is not a Halon gas ?
India has how many states?