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Q. A small gap is left at the joints of rails in a railway track to
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Q. When milk is churned, the cream from it is separated due to
Q. Which must be true for metamorphism to occur?
Q. Young's experiment established that
Q. The electric current in a metal wire is due to the flow of -
Q. A pond may be referred to as
Q. Why does the surface water of a pond remain cool in a hot day?
Q. A soap bubble shows colours when illuminated with white light. This is due to
Q. Edwin Howard Armstrong was an inventor of which of the following technologies?
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