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Class 8
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Study electrolysis of water
Study electrolysis of water
Theory
Theory
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1)
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is
1:1
2:1
1:2
4:1
2)
The electrolyte in electrolysis is always in molten or liquid state.
False
True
3)
Example for a non-electrolyte
Acidified water
Salt solution
Glucose
Sodium Chloride
4)
The process of electrolysis is based on -------- laws of electrolysis
Ohm’s
Faraday’s
Fleming’s
Kelvin’s
5)
Water is decomposed into hydrogen and oxygen by means of an electric current by the method of
Electric heating
None of these
Electrolysis
Electroplating
6)
A weak electrolyte is one which
Dissociates completely
Ionises completely
Is feebly ionised in the solution
Is having high electrical conductivity
7)
An electrolyte is a
Metal
Cell
Liquid that conducts electricity
Sugar
8)
During electrolysis, the electrolyte conducts electricity by the movement of
Delocalized electrons
Solvent particles
Mobile cations and anions
Electrolyte particles
9)
Sodium chloride is a
Strong electrolyte
Non-Electrolyte
None of these
Weak electrolyte
10)
Pure / Distilled water is a good conductor of electricity
True
False