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Class 8 Science
Chemical Effects Of Electric Current
Quiz 1
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of the following is a bad conductor of electricity?
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Distilled water
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Silver nitrate
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Sulphuric acid
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Copper sulphate
Explanation
Distilled water
Which of the following does not conduct electricity?
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Sugar solution
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Vinegar solution
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Lemon juice solution
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Caustic soda solution
Explanation
Sugar solution
An electric current can produce
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heating effect
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chemical effect
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magnetic effect
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all of these
Explanation
all of these
Pure or distilled water is a
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poor conductor
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good conductor
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both (a) and (b)
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none of these
Explanation
poor conductor
Which of the following is a good conductor?
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Brick
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Steel
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Plastic
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Cotton
Explanation
Steel
Polythene is
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a conductor
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an insulator
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both (a) and (b)
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none of these
Explanation
an insulator
Electroplating is based on
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heating effect of electricity
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chemical effect of electricity
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physical effect of electricity
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magnetic effect of electricity
Explanation
chemical effect of electricity
Copper is
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a good conductor
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an insulator
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both (a) and (b)
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none of these
Explanation
a good conductor
Waste from an electroplating factory must be disposed off
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in the nearby river
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in the nearby pond
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in the nearby cornfield
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according to the disposal guidelines of Waste Management Bodies
Explanation
according to the disposal guidelines of Waste Management Bodies
An electrolyte is
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a metal
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a liquid that conducts current
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a non-metal
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none of these
Explanation
a liquid that conducts current
Flow of electron is called
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electrolyte
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electroplating
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electrodes
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electric current
Explanation
electric current
Which is not a non-electrolyte?
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Ethyl alcohol
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Sodium chloride
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Urea
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Sodium solution
Explanation
Sodium chloride
An electric lamp glows due to
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heating effect
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magnetic effect
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chemical effect
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physical effect
Explanation
heating effect
Electroplating prevents
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corrosion
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passing of current
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dissociation
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shining
Explanation
corrosion
Which of the following is not used for electroplating metal articles?
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Nickel
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Silver
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Chromium
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Sodium
Explanation
Sodium
Iron objects can be protected by electroplating them with
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chromium
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nickel
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zinc
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all of these
Explanation
all of these
Electroplating is
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Heating effect of current
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Magnetic effect of current
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Chemical effect of current
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None of these
An electric current can produce
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heating effect only.
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chemical effect only.
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magnetic effect only.
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chemical, heating, and magnetic effects
Match the column
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p -> i, q -> ii, r -> i, s ->ii
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p -> i, q -> i, r -> ii, s ->ii
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p -> ii, q -> ii, r -> i, s ->i
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p -> ii, q -> i, r -> ii, s ->i
On passing electricity through copper sulphate solution
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Copper is formed at anode
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Copper is formed at cathode
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Oxygen is formed at anode
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Hydrogen is formed at cathode
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