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CHEMISTRY

Chemistry
Which of the following electrodes is used in strongly alkaline solution

Mercury - mercurous chloride electrode
Mercury - mercurous sulphate electrode
Silver - silver chloride electrode
Mercury - mercuric oxide electrode

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Chemistry
The laws of electrolysis are given by

Faraday
Ostwald
Lewis
Arrhenius

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Chemistry
Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives

Copper at cathode and anodes dissolve to give copper
Copper at anode and oxygen at cathode.
Copper at cathode and oxygen at anode
Hydrogen at cathode and oxygen at anode

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Chemistry
Aluminium can be purified by

Oxidation
Distillation
Electrolysis
Ozonolysis

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Chemistry
The aqueous solution of potassium chloride is

A strong electrolyte
A weak electrolyte
A non-electrolyte
Initially weak and then become a strong electrolyte

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