Chemistry - 9 Chapter - 8
Electro Chemistry
Test - 14

1. Voltaic is production of direct electric current by chemical action.


2. In reduction electrons are increased and in oxidation electrons are decreased.


3. Zinc - Carbon Dry Cell is used in flash light, portable radio, toys etc.


4. Almost daily students use graphite.


5. While recharging a Lead storage battery external positive potential is connected with the negative electrode.


6. While recharging the secondary battery the sulphuric acid, which was consumed while the battery was in use, is reproduced.


7. The article to be electroplated is made an anode.


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


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