Section 21.2
Types of Batteries
Practice Test
1.
Why are alkaline dry cell batteries smaller in size than zinc-carbon dry cells?
a.
Alkaline batteries do not need the carbon rod cathode.
b.
Alkaline batteries do not require steel cases.
c.
No zinc is reduced in the alkaline batteries.
d.
Zinc paste takes up less space than zinc powder.
Hint
2.
What is the anode reaction when a NiCad battery is used to generate electric current?
a.
oxidation of cadmium in the presence of an acid
b.
oxidation or cadmium in the presence of a base
c.
reduction of cadmium in the presence of an acid
d.
reduction of cadmium in the presence of a base
Hint
3.
How does paint protect steel surfaces from corrosion?
a.
Paint acts as a sacrificial anode.
b.
Paint corrodes leaving steel intact.
c.
Paint galvanizes steel.
d.
Paint prevents the oxidation-reduction reaction of corrosion from occurring.
Hint
4.
A redox reaction that is not easily reversed is the source of electric energy in a(n) _______.
a.
primary battery
b.
secondary battery
c.
fuel cell
d.
electrolytic cell
Hint
5.
A redox reaction that is easily reversed, can produce electric energy, and can be recharged is a(n) __________.
a.
primary battery
b.
secondary battery
c.
fuel cell
d.
electrolytic cell
Hint
6.
The pieces of metal that are placed on the outside of ships to help prevent corrosion are _________.
a.
galvanized metals
b.
sacrificial cathodes
c.
sacrificial anodes
d.
electrolyzed metals
Hint
7.
A chemical reaction generates electric energy spontaneously in ___________.
a.
a galvanic cell
b.
corrosion
c.
electrolysis
d.
spontaneous combustion
Hint
