Electrochemistry - 2
1.
During electrolysis of brine in a mercury cathode cell or a diaphragm cell, chlorine, hydrogen and sodium hydroxide are produced. What is the molar ration of these products?
Cl
2
H
2
NaOH
a) 1 2 2
b) 1 1 1
c) 1 1 2
d) 2 1 1
2.
When Aluminum electrode is coupled with copper electrode in a galvanic cell:-
a) Reduction takes place at aluminum electrode
b) Reduction takes place at copper electrode
c) Oxidation takes place at copper electrode
d) Both (b) and (c)
3.
In K
2
MnO
4
, oxidation number of Mn is:-
a) +7
b) +5
c) +6
d) +4
4.
In standard hydrogen electrode:-
a) Platinum electrode
b) H
2
gas at 1 atm pressure
c) 1.0M Hcl solution
d) All of the above
5.
The overall positive value for the reaction potential predicts that process is energetically:-
a) Not feasible
b) Feasible
c) No indication
d) Impossible
6.
Value of standard reduction potential for strong reducing agents is:-
a) Large positive value
b) Zero
c) any of the above
d) Large negative value
7.
Fuel cells are the means by which chemical energy may be converted into:-
a) Magnetic energy
b) Heat energy
c) Sound energy
d) Electric energy
8.
The substance that conducts electricity in fused or dissolved state is called ……
a) Electrolytic Cell
b) Zero
c) Electrochemical Series.
d) Electrolyte
9.
Solution prepared in water is called ……… solution.
a) Zero
b) Aqueous
c) Above
d) Positive
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