Chemistry - 9 Chapter - 8
Electro Chemistry
Test - 17

1. During electrolysis the quantities of substances librated at electrodes depend upon the time duration of passing the current at a uniform rate.


2. The large unit of the quantity of electricity is called coulomb.
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3. The quantity of a substance which is deposited when one Farady of electricity is passed through an electrolyte is called one gram


4. Farady's laws are used for the determination of electrochemical equivalents of different substances


5. Oxidation-reduction reaction take place at the electrode by electrolyzed of aqeous solution of




6. An electrochemical cell uses oxidation-reduction reaction to produce current is called:




7. In electrolytic cell, at the surface of Zinc electrode, each Zinc atom loses




8. Pace maker is planted in human body to regulate the heart beat. This cell has electrodes




9. Dry cell container is made of




10. In dry cell anode is made of




11. Lead storage battery has two electrodes one is lead and second electrode is made of




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