List of top Physical Sciences Questions on Theory of Equations

Which is used as a cryogenic agent?
German Silver contains
Denatured spirit contains
Ring test ascertains
The volume of 64 g O2 at STP is
When a bullet is fired from a gun, the gun recoils backward. This phenomenon is an example of
A train track is laid with 100 m pieces of steel rails. If coefficient of linear expansion of steel is 11 x 10-6, what must be the minimum gap between two pieces of rails so that the train can run safely between 0°C and 50°C ?
A boy starts running with a speed of 1 m / s from a corner of a square of sides 20m along its periphery. What will be his displacement after 35 second ?