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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
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.
Question # 2
Which of the following is not a use of electrochemistry
Question # 3
The reducing agent in a redox reaction
Question # 4
Electrons in a galvanic cell flow from
Question # 5
The principle of measuring DO by Wrinkler's Method is based on.
Question # 6
The reaction at the cathode is alwyas
Question # 7
In electroplating the object to be plated is connected to
Question # 8
In redox reactions, oxidizing agents are
Question # 9
Redox reactions always involve.
Question # 10
Which of the following changes wold typically lead to an incresse in he rate of electrolysis.
Question # 11
A positive value for the standared electrode potential of a metal ion metal half cell indicate that
Question # 12
Electrochemical cells convert chemical energy into
Question # 13
The more positive the standard reduction potential
Question # 14
Which species is educed in the followig rection ? Zn + Cu --------- Zn
Question # 15
A more genative Eo value means the electrode
Question # 16
Which of the followig will react with HCl to librerate H2 gas
Question # 17
The salt brige allows tranfer of ........in Zn -Cu voltaic cell
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FSc Part 1 Chemistry (New Book) Chapter 10 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Whcih metal will displace Cu from CuSO4 Solution. |
A. Zn
B. Ag
C. Hg
D. Pb
|
| 2 | 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.
|
| 3 | Oxidation numebrof oxygen in H2O |
A. 1
B. -2
C. 0
D. +1
|
| 4 | The process of coating a metal with zinc is called. |
A. Alloying
B. Galvanization
C. Electroefining
D. Electrplating
|
| 5 | In a galvanic cell, the anode is |
A. Negaive and site of oxidation
B. Postive and site of oxidation
C. Negative and site of reduction
D. Postive and site of reduction
|
| 6 | The oxidation number of sulfur in H2SO4 is |
A. +2
B. +4
C. +6
D. +8
|
| 7 | Electrochemical sereis helps in predicting. |
A. Rate of reaction
B. Type of bond
C. Dirction of redox reactions
D. Heat released
|
| 8 | Redox reactions always involve. |
A. Gain of protons
B. Transfer of electrons
C. Loss ofneutrons
D. Nuclear change
|
| 9 | In redox reactions, oxidizing agents are |
A. reduced
B. Oxidized
C. Always metals
D. Always gases
|
| 10 | Which component maintains elecrical neutrality in an electronchemical cell |
A. Salt bridge
B. Voltmeter
C. Electrolyte
D. Electrodes
|
Test Questions
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Nawal NADEEM
21 May 2017Good job!!!