The liquid will conduct electric current in a circuit when the vessel is filled with _________.
air
salt solution
distilled water
helium
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The glowing of filament bulb is due to:
physical effect of electric current
chemical effect of electric current
heating effect of electric current
magnetic effect of electric current
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Pure water is a good conductor of electricity. The statement is
sometimes true.
false
always true.
none of these
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To prevent iron from corrosion it is electroplated with __________
oxygen
zinc
aluminium
copper
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Name the chemist who showed bubbles of oxygen and hydrogen are produced when electric current passes through water.
Luigi Galvani
Alessandro Volta
William Nicholson
William Harvey
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Which of the following substance is not a good conductor of electricity?
copper
aluminium
rubber
mercury
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The whole apparatus of electrodes, electrolytes and vessel containing them is called _____
voltameter
thermometer
ammeter
electrometer
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In a LED, the longer lead/leg is connected to ____________
positive terminal of the battery
negative terminal of the battery
none of these
either positive of negative terminal of the battery
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The decomposition of liquid compound on passing an electric current though it is known as ______
electroplating
magnetic effect
electrolysis
electro-resistivity
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Most liquids that conduct electricity are solutions of ____________
acids
salts
all of these
bases
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