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Chemistry - 9 Chapter - 8
Electro Chemistry
Test - 9
1.
What is an electric battery?
a) Electric battery is a device that produces an indirect current through the conversion of chemical energy into electrical energy
b) Electric battery is a device that produces a direct current through the conversion of chemical energy into electrical energy
2.
What is a primary cell?
a) An electrical cell that produce electricity through chemical reaction but can be recharged.
b) An electrical cell that produce electricity through chemical reaction but cannot be recharged.
3.
What is a secondary battery?
a) A non-rechargeable battery consisting of one or more cells for producing electrical energy from stored chemical energy.
b) A rechargeable battery consisting of one or more cells for producing electrical energy from stored chemical energy.
4.
What is lead?
a) A light bluish gray metal that bends easily. It is used in car batteries etc
b) A heavy bluish gray metal that bends easily. It is used in car batteries etc
5.
Lead storage battery is an example of secondary battery.
a) False
b) True
6.
What is the additional advantage of Lead storage battery?
a) The electrode reactions can be reversed and battery can be recharged.
b) The electrode reactions cannot be reversed and battery can be recharged.
7.
To recharge a Lead storage battery ______ potential than that of the battery is applied from an external source.
a) Equal
b) Lower
c) Higher
8.
What is recharging process?
a) Recharging process is when a higher potential than that of the battery is applied from an external source to recharge a Lead storage battery.
b) Charging process is when a higher potential than that of the battery is applied from an external source to recharge a Lead storage battery.
9.
While recharging a Lead storage battery external negative potential is connected with the negative electrode.
a) True
b) False
10.
While recharging a Lead storage battery external positive potential is connected with the positive electrode.
a) False
b) True
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