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The device used for measuring potential difference is known as _____________. a) potentiometer b) ammeter c) galvanometer d) voltmeter ...
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In mumps swelling of which salivary gland is produced? a) Parotid b) Submaxillary c) Submandibular d) Sublingual ...
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Law of reflection in irregular surface is a) obeyed b) not obeyed c) depends on the material of the surface d) none of these ...
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A 50-N object was lifted 2.0 m vertically and is being held there. How much work is being done in holding the box in this position? a) more than 100 J b) 100 J c) less than 100 J, but more than 0 J d) 0 J ...
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Which one of the following has variable valency ? a) Chlorine b) Sulphur c) Iron d) Sodium ...