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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
Electrons in a galvanic cell flow from
Question # 2
If salt bridge in not used, between twohalf cells in a Galvanic cell, than the voltage.
Question # 3
What is the unit of cell potanetial.
Question # 4
If Eo cell is +1.10 V , the reactio is
Question # 5
Which of the followng elements cannot displace hydrogen from acid.
Question # 6
If Zn -Cu galvanic cell works ideally after complete discharge, both comparatments will have
Question # 7
The process of coating a metal with zinc is called.
Question # 8
Which of the following is not a use of electrochemistry
Question # 9
In redox reactions, oxidizing agents are
Question # 10
For a redox reaction to be spontaneous, Delga G should be
Question # 11
Electroyte in electroplating of silver
Question # 12
In electroplating the object to be plated is connected to
Question # 13
The anode is electrolysis of molten NaCl is
Question # 14
The reducing agent in a redox reaction
Question # 15
Standard electrode potential is measured under
Question # 16
Electroysis requires.
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 | The salt brige allows tranfer of ........in Zn -Cu voltaic cell |
A. SO4 Ions
B. Zn2 ions
C. Both
D. None of thes
|
| 2 | Electrochemical equivalent is. |
A. Mass per mole
B. Mass per coulomb
C. Charge per second
D. Current per mass
|
| 3 | Standard hydrogen electrode is assigned potential of. |
A. 1.0 V
B. 0.5 V
C. 0.0 V
D. -1.0 V
|
| 4 | In an electrolysis exprement if a charge 96,500 Coluombs is passed trough a solution, the amount of substance liberated or deposited at the electrode is directly relatd to. |
A. Mass numebr of the ion
B. One mole of electrons being transferred
C. Avogadro's nmber of ions being discharged
D. Standrd electrode potentil of the metal iion
|
| 5 | A salt bridge is usually made from |
A. Metallic wires
B. Porous glass
C. Inert salt solution in agar agar
D. Hydrochloric acid
|
| 6 | Which species is educed in the followig rection ? Zn + Cu --------- Zn |
A. Cu2+
B. Zn
C. Cu
D. Zn3+
|
| 7 | The oxidation number of sulfur in H2SO4 is |
A. +2
B. +4
C. +6
D. +8
|
| 8 | 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
|
| 9 | Electrochemical cells convert chemical energy into |
A. Electrila energy
B. Heat
C. Light
D. Nuclear energy
|
| 10 | In the Hall Heroult process, aluminum is obtained by |
A. Chemical reaction
B. Thermal decomposition
C. Elelctrolysis of alumina
D. Roasting and leaching
|
Test Questions