Chemistry - 9 Chapter - 8Electro Chemistry Test - 6

Chemistry - 9 Chapter - 8
Electro Chemistry
Test - 6

1. A reactive metal ------- is obtained by the electrolysis of fused sodium chloride.

a) Iron
b) Sulphuric acid
c) Sodium
d) Copper

2. The cell used to obtain Sodium uses a graphite anode and a --------- cathode.

a) Sodium
b) Copper
c) Silver
d) Steel

3. Electrolysis of fused sodium chloride yields sodium metal and ------------- as the products.

a) Sulphyric acid
b) Chlorine gas
c) Copper
d) Iron

4. How the cathode and anode are kept separated ?

a) By an iron gauze
b) By copper gauze
c) By a steel gauze
d) By a silver gauze

5. During electrolysis, what are the factors upon which the quantities of substances liberated at electrodes depend?

a) All are correct
b) Time duration of passing the current at a uniform rate.
c) Charge on the ions being deposited.
d) The quantity of current passed.

6. State Faraday's First Law Of Electrolysis?

a) The mass of an element, which is deposited on an electrode during electrolysis, is directly proportional to the quantity of electricity, Q, which passes through the electrolyte.
b) The Atomic Number of an element, which is deposited on an electrode during electrolysis, is directly proportional to the quantity of electricity, Q, which passes through the electrolyte.

7. What is the unit of quantity of electricity?

a) Columb
b) Ampere
c) Volt
d) Watt

8. Define Coulomb?

a) It is the quantity of electricity passed when one ampere current passes for one second.
b) It is the quantity of electricity passed when one ampere current passes for two seconds.

9. The larger unit of the quantity of electricity is called?

a) Volt
b) Ampere
c) Faraday
d) Watt

10. One Faraday is equal to----------- Coulombs

a) 96,500
b) 59,600
c) 95,600
d) 69,500

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