Electrochemistry Test

Result

Electrochemistry Test - 4

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Score
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Question 1/3
1 / -0

Statement -1 : In a dry cell zinc acts as cathode and carbon rod as anode.

Statement -2 : A dry cell has a potential of nearly 1 .5 V.

Correct

Wrong

Skipped
A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explana tion of Statement -1.

Correct

Wrong

Skipped
B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement -1.

Correct

Wrong

Skipped
C
Statement-1 is true but Statement-2 is false.

Correct

Wrong

Skipped
D
Statement-1 is false but Statement-2 is true.

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Solutions

In dry cell, zinc acts as anode and carbon (graphite) rod as cathode. Dry cell has a potential of nearly 1.5 V.
Question 2/3
1 / -0

Current carried by, during the passage of electricity through the solution of an electrolyte, is

Correct

Wrong

Skipped
A
cations only

Correct

Wrong

Skipped
B
anions only

Correct

Wrong

Skipped
C
both cations and anions, fractions of current carried being equal

Correct

Wrong

Skipped
D
both cations and anions, usually fractions carried being different

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Solutions

On pulling out one of the electrodes the electric field applied to the solution disappears and hence the ions start moving randomly.
Question 3/3
1 / -0

When electric current is passed through a cell having an electrolytic solution, the cations move towards the cathode and anions towards the anode. If anode is pulled out from the solution, then

Correct

Wrong

Skipped
A
the cations will continue to move towards cathode and anions will stop moving

Correct

Wrong

Skipped
B
the cations and anions will start moving randomly.

Correct

Wrong

Skipped
C
both the cations and anions will stop moving

Correct

Wrong

Skipped
D
the cations and anions will move towards the cathode

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Solutions

If anode is pulled out from the solution then both the cations and anions will stop moving.

Question 1/3

Both Statement-1 and Statement-2 are true and Statement-2 is the correct explana tion of Statement -1.

Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement -1.

Statement-1 is true but Statement-2 is false.

Statement-1 is false but Statement-2 is true.

Question 2/3

cations only

anions only

both cations and anions, fractions of current carried being equal

both cations and anions, usually fractions carried being different

Question 3/3

the cations will continue to move towards cathode and anions will stop moving

the cations and anions will start moving randomly.

both the cations and anions will stop moving

the cations and anions will move towards the cathode