Steam burn is more severe than that of boiling water because
Steam burn is more severe than that of boiling water because A. steam burn is independent of relative…
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A cannon is fired from town X,after how long is the sound heard at a…
A cannon is fired from town X,after how long is the sound heard at a town Y 4.95…
The phenomenon that shows that increase in pressure lowers the melting point can be observed…
The phenomenon that shows that increase in pressure lowers the melting point can be observed in A. sublimation…
A block of aluminum is heated electrically by a 30 w heater if the temperature…
A block of aluminum is heated electrically by a 30 w heater if the temperature rises by 10°c…
The ground is always cold at night because the
The ground is always cold at night because the A. atmosphere absorbs the sun’s energy at night B.…
Which of the following electromagnetic waves has the highest frequency?
Which of the following electromagnetic waves has the highest frequency? A. utra – violet rays B. radio waves…
A perfect emitter or absorber of radiant energy is a
A perfect emitter or absorber of radiant energy is a A. conductor B. black body C. white body…
Which of the following could be effectively used to reduce friction?
Which of the following could be effectively used to reduce friction? A. kerosene B. grease C. water D.…
Which of the following types of waves needs a medium for propagation?
Which of the following types of waves needs a medium for propagation? A. sound waves B. light waves…
I. Density of the liquid. II. Depth below the surface of the liquid. III. Surface…
I. Density of the liquid. II. Depth below the surface of the liquid. III. Surface area of the…