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Q. The fundamental scientific principle in the operation of battery is
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Q. Magnetic keepers are used to protect magnets from:
Q. Mass / Volume = .............. ?
Q. Red is used as an emergency or danger signal as
Q. Superconductors are substances which
Q. After long periods of use, a grey spot develops on the inside of a bulb. This is as
Q. Out of the following which is not emitted by a radioactive substance?
Q. Which among the given is not caused by atmospheric refraction of light -
Q. The mass of a star is two times the mass of the Sun. How it will come to an end ?
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