Chemistry - 9 Chapter - 8Electro Chemistry Test - 2

Chemistry - 9 Chapter - 8
Electro Chemistry
Test - 2

1. Electrochemical cells are of ______ types.

a) 4
b) 2
c) 3

2. Define Electrolytic Cell?

a) It is device in which electrolysis can be produced, usually consisting of an electrolyte, its container, and electrodes. In it a non-spontaneous oxidation-reduction reaction takes place with the help of electrical energy.
b) It is device in which electrolysis can be produced, usually consisting of an electrolyte, its container, and electrodes. In it a spontaneous oxidation-reduction reaction takes place with the help of electrical energy.

3. Define Voltaic Cell?

a) In Voltaic Cell a non-spontaneous oxidation-reduction reaction is used to produce electric current.
b) In Voltaic Cell a spontaneous oxidation-reduction reaction is used to produce electric current.

4. In electrolytic type cell, non spontaneous redox reaction is carried out with the help of an---------.

a) Electrode
b) Electrolyte
c) Anode
d) Electric current

5. In the voltaic cell a spontaneously occurring redox reaction produces -----------.

a) Oxygen
b) Redox
c) Hydrogen
d) Electric current

6. In an oxidation process, electrons are _____ whereas in a reduction process electrons are______.

a) lost, absorbed
b) absorbed, lost
c) no effect.

7. In cells since the electrochemical reactions involve the transference of electrons, they are called oxidation-reduction or redox reactions.

a) True
b) False

8. For the purpose of electric current substances have been classified into _____ distinct groups.

a) 3
b) 4
c) 2

9. What are two distinct groups of substances for the purpose of passage of electric current?

a) Insulators
b) Conductors

10. Those substances through which electric current can pass are called conductors.

a) True
b) False

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