Magnalium is an alloy of_____________?

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Laughing gas has chemical composition of following two elements ?

A. Nitrogen + Hydrogen B. Nitrogen + Carbon C. Nitrogen + Oxygen D. Oxygen + Carbon E. None of these...

Which of the following atmospheric layers help in radio communication?

A. Exosphere B. Ionosphere C. Troposphere D. Stratosphere E. Ozone layer...

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...

What fraction of a floating iceberg remains inside water ?

A: 0.1 B: 0.5 C: 0.8 D: 0.9...