Smallpox was eradicated in 1970s. What was the ‘great pox’ which remains active?

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Laughing gas has chemical composition of following two elements ?

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A body can escape the gravitational pull of the earth if it is thrown up with a velocity of?

A. 25 miles per sec b ) 60 miles per sec C. 7 miles per sec D. 10 miles per sec E. None of these...

Short-sightedness can be corrected by using ___________?

A. Convex lens B. Concave lens C. Convex-concave lens D. Concave-convex lens...

There is no connection of supernova explosion with___________?

A. Cosmic rays B. Pulsars C. The formation of heavy elements D. Quasars...