Electrochemistry

Chemistry
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In Nickel-Silver nitrate cell, silver acts as a :

A
cathode
B
anode
C
salt bridge
D
none of these
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The figure shows a car bumper coated with chromium.

Why are car bumpers often coated with chromium?

A
(i) and (ii) only
B
(ii) and (iii) only
C
(iii) and (i) only
D
(i),(ii) and (iii) only
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Select the correct statements about the electrolysis.

A
Electric current is used to drive a non spontaneous reaction.
B
is positive for chemical process during electrolysis.
C
Cations and anions move towards the anode and cathode respectively.
D
Over voltage is generally associated with the anode in the electrolysis of .
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 1 faraday is defined as:

A
charge of one mole of electrons
B
smaller unit of charge
C
moles of electron involves in half reaction
D
none of the above
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Which cell involves spontaneous oxidation and reduction?

A
Galvanic cell
B
Electrolytic cell
C
Fuel cell
D
Lead cell
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The given diagram shows an electrochemical cell in which the respective half cells contain aqueous 1.0 M solutions of the salts and . Given that, 



Which of the following statement(s) is/are correct?

A
The electrode made from metal X has positive polarity.
B
Electrode Y is the anode.
C
The flow of electrons is from Y to X.
D
The reaction at electrode X is an oxidation reaction.
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