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MCQ's Test For Chapter 10 "Electrochemistry"
Try The MCQ's Test For Chapter 10 "Electrochemistry"
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Total Questions17
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Time Allowed20
Electrochemistry
00:00
Question # 1
If Zn -Cu galvanic cell works ideally after complete discharge, both comparatments will have
Question # 2
Electroplating involves.
Question # 3
A positive value for the standared electrode potential of a metal ion metal half cell indicate that
Question # 4
Electrolysis of CuSO4 using copper eletrodes results in
Question # 5
Standard hydrogen electrode is assigned potential of.
Question # 6
Electroysis requires.
Question # 7
Which of the followig will react with HCl to librerate H2 gas
Question # 8
If salt bridge in not used, between twohalf cells in a Galvanic cell, than the voltage.
Question # 9
Which of the following changes wold typically lead to an incresse in he rate of electrolysis.
Question # 10
Which species is educed in the followig rection ? Zn + Cu --------- Zn
Question # 11
Electroysis is used in the extration of
Question # 12
In redox reactions, oxidizing agents are
Question # 13
For a redox reaction to be spontaneous, Delga G should be
Question # 14
If Eo cell is +1.10 V , the reactio is
Question # 15
The process of purifying copper using electricity is called.
Question # 16
The more positive the standard reduction potential
Question # 17
In a galvanic cell, the anode is
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FSc Part 1 Chemistry (New Book) Chapter 10 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Which of the following is not a use of electrochemistry |
A. Manufacture of explosives
B. Electroplating
C. Extractio of metals
D. Electrorefining
|
| 2 | Electrolysis of CuSO4 using copper eletrodes results in |
A. Increase in eletolyte concentration
B. Decrease in Cu2+ concentration
C. No change in electrolyte composition
D. Formation of new compound
|
| 3 | In redox reactions, oxidizing agents are |
A. reduced
B. Oxidized
C. Always metals
D. Always gases
|
| 4 | Electrons in a galvanic cell flow from |
A. Anode to cathode
B. Cathode to anode
C. Salt bridge to cathode
D. Elecrolyte to anode
|
| 5 | In electolysis, reduction always occurs at |
A. Anode
B. Cathode
C. Salt bridge
D. Electroyte
|
| 6 | Electrochemical cells convert chemical energy into |
A. Electrila energy
B. Heat
C. Light
D. Nuclear energy
|
| 7 | A positive value for the standared electrode potential of a metal ion metal half cell indicate that |
A. The metal is stong reducing agent
B. The metal ion is redily oxidized
C. The metal ion is redily reduced
D. The metal will readily displace hydrogen from dilute acids.
|
| 8 | In an electrochecmial cell, which ion migrates to cathode through the salt bridge. |
A. Anions
B. Cations
C. Eletrons
D. Protons
|
| 9 | Electroplating involves. |
A. Electrolysis for coating
B. Spontaneous oxidation
C. Redox without electordes
D. Thermolysis
|
| 10 | Oxidation numebrof oxygen in H2O |
A. 1
B. -2
C. 0
D. +1
|
Test Questions