Under which Article was Emergency in India declared in 1975?
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Who presented the first Union Budget in 1947?
The passenger reservation system of the Indian Railways is designed by
Warm air is ______.
The ratio of change in velocity of a body to the total time taken by it is its __________________.
Sound travels at a speed of 333 m/s in the air, thus, in 1 s, a distance of 333 m is travelled by
In an optical fibre the signal is transmitted
Kelvin (K) is the unit of measurement of ________.