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Q. In which decade was the telephone invented?
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Q. What is the S.I. Unit of entropy?
Q. Copper wires are generally used for electrical power transmission instead of iron wire because:
Q. Drinks remain hot or cold for a long time in a thermos flask because of the
Q. Steam at 100°C causes more severe burns than water at 100°C because
Q. Which among the following is NOT an insulator?
Q. What principle/law explains the working of the hydraulic brakes in automobiles ?
Q. The gas produced during lightning is
Q. A parallel A.C circuit in resonance will
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