Chemistry - 9 Chapter - 8Electro Chemistry Test - 11

Chemistry - 9 Chapter - 8
Electro Chemistry
Test - 11

1. For electroplating electrodes are dipped in the electrolytic tank containing the electrolyte and electric current is passed.

a) False
b) True

2. The following conditions should be fulfilled to get good deposits in electroplating. ( Pick the wrong statement )

a) Low temperature
b) highly volatile
c) High current density
d) Higher concentration of the metal in its electrolytes

3. In future, a car battery may be made of aluminium and hydrogen and it may use aqueous sodium hydroxide as an electrolyte.

a) True
b) False

4. What is a Conductor?

a) Conductor is a substance which allows electric current to pass through it.
b) Conductor is a substance which does not allows electric current to pass through it.

5. What is a Non-Conductor?

a) A substance through which electric current cannot pass.
b) A substance through which electric current can pass.

6. What is Ionic Theory?

a) A theory which explains the process of electricity
b) A theory which explains the process of electrolysis.

7. What is Electrochemical Series?

a) A list of ions in which they are arranged in the order of their ability to get discharged.
b) A list of ions in which they are arranged in the order of their ability to get charged.

8. Nicholson and Chalisle decomposed water into hydrogen and oxygen.

a) True
b) False

9. Conversion of chemical energy into electrical energy or electrical energy into chemical energy is called electrochemistry.

a) Fasle
b) True

10. Passage of electric current through copper wire is electrochemistry?

a) True
b) Fasle

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