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When a piece of ice floating on the surface of water in a beaker completely melts, then the level of water will _ ?
When a piece of stone is immersed in water, it displace water of equal -
When a salt dissolves in water
When a ship enters a sea from a river
When a turning fork of unknown frequency if sounded with a tuning fork of frequency 100 Hz, 2 beats per second are heard. When the arm of tuning fork of unknown frequency is loaded with a little wax and both are sounded 1 beat per second is heard. The unknown frequency is :
When an aero plane is making a loop, pilot does not fall down because his weight provides the necessary-
When heated from 00 to 100C volume of a given mass of water will
When Helium atom Loses electron, then it becomes
When hot liquid is poured into a thick glass tumbler, it cracks as glass
When hot-water is sprinkled on a hotter glass tumbler, it breaks as