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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
The process of coating a metal with zinc is called.
Question # 2
Electroysis is used in the extration of
Question # 3
In electroplating the object to be plated is connected to
Question # 4
Standard electrode potential is measured under
Question # 5
Down cell is used for extractio of.
Question # 6
Which component maintains elecrical neutrality in an electronchemical cell
Question # 7
What is the unit of cell potanetial.
Question # 8
Which of the following is not a use of electrochemistry
Question # 9
Which of the followig will react with HCl to librerate H2 gas
Question # 10
In an electrochecmial cell, which ion migrates to cathode through the salt bridge.
Question # 11
Electrolysis is the process of
Question # 12
The reaction at the cathode is alwyas
Question # 13
The numebr of coulombs required to deposit 1 mole of Ag
Question # 14
In a galvanic cell, the anode is
Question # 15
The cathode in an electrolytic cell is.
Question # 16
A more genative Eo value means the electrode
Question # 17
Which species is educed in the followig rection ? Zn + Cu --------- Zn
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M Mian Babar 14 - Aug - 2024 12 Min 01 Sec 13/17
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If Eo cell is +1.10 V , the reactio is |
A. Spontaneous
B. Non spontaneous
C. At equibrium
D. Endothermic only
|
| 2 | Electroysis requires. |
A. Redox reaction
B. Spontaneous cell
C. Non spontaneous reaction
D. Combustion
|
| 3 | In the Hall Heroult process, aluminum is obtained by |
A. Chemical reaction
B. Thermal decomposition
C. Elelctrolysis of alumina
D. Roasting and leaching
|
| 4 | Cell potential is the differecne between |
A. Temperature and pressure
B. Concentration of ions
C. Electrode potentials of chathode and anode
D. Mass of electrodes
|
| 5 | Standard electrode potential is measured under |
A. 100 oC and 1 atm
B. 0 oC and 1 M concentration
C. 25 oC and 1 M concentration
D. 100 oC and 1 M concentration
|
| 6 | Which of the followng elements cannot displace hydrogen from acid. |
A. Zn
B. Cu
C. AI
D. Fe
|
| 7 | Redox reactions always involve. |
A. Gain of protons
B. Transfer of electrons
C. Loss ofneutrons
D. Nuclear change
|
| 8 | Which of the following is not a use of electrochemistry |
A. Manufacture of explosives
B. Electroplating
C. Extractio of metals
D. Electrorefining
|
| 9 | If salt bridge in not used, between twohalf cells in a Galvanic cell, than the voltage. |
A. Decrease slowly
B. Decrease repidly
C. Does not change
D. Drope to zero
|
| 10 | One Faraday is equl to |
A. 1 C
B. 96500 C
C. 1 J
D. 96500 J
|
| 11 | Electrolysis is the process of |
A. Chemical energy into electrical
B. Electrical energy into chemical
C. Heat energy into mechanical
D. Mechanical energy into chemical
|
| 12 | The experimental determination of Avogadro's numebr through electrolysis typically involves measuring |
A. The current and voltage applied
B. The mass of the substance deposited or liberated by a konown charge
C. The conductivity of the electrolytic solution
D. The temperature changes duirng electrolysis
|
| 13 | Electroysis is used in the extration of |
A. Silver
B. Gold
C. Aluminum
D. Mercury
|
| 14 | Whcih metal will displace Cu from CuSO4 Solution. |
A. Zn
B. Ag
C. Hg
D. Pb
|
| 15 | The process of purifying copper using electricity is called. |
A. Electrolysis
B. Electrplating
C. Electrorefinging
D. Electrogavimetry
|
| 16 | Which of the followig will react with HCl to librerate H2 gas |
A. Ag
B. Mg
C. Au
D. Cu
|
| 17 | Which of the following metals would most raadily displace hydrogen gas from dilute acids. |
A. Copper
B. Silver
C. Magnesium
D. Platinum
|
Test Questions
