330044
The electro-chemical cell stops working after some time because
1 Electrode potentials of both electrodes become zero
2 Electrode potentials of both electrodes become equal
3 Temperature of the cell increases
4 The reaction starts proceeding in opposite direction
Explanation:
Electrochemical cell can't work when electrodes have same electrode potential.
CHXII03:ELECTROCHEMISTRY
330045
How can an electrochemical cell be converted into an electrolytic cell?
1 Exchanging the electrodes at anode and cathode.
2 Applying an external opposite potential greater than .
3 Applying an external opposite potential lower than
4 Reversing the flow of ions in salt bridge.
Explanation:
If an electrochemical cell acts as an electrolytic cell. The entire cell reaction will be reversed. During this the the oxidised species will be reduced and reduced species will be oxidised. So, the correct option is (2).
JEE Main - 2024
CHXII03:ELECTROCHEMISTRY
330046
Assertion : For the Daniell cell, with , the application of opposite potential greater than results into flow of electrons from cathode to anode. Reason : is deposited at anode and is dissolved at cathode.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
When the opposing potential surpasses the cell potential, causing a reversal in current flow, the electrochemical cell undergoes a change in the direction of the overall cell reaction, converting zinc ions to solid zinc at the anode and oxidizing copper to produce copper ions at the cathode. So, option (2) is correct.
CHXII03:ELECTROCHEMISTRY
330047
In which of the following conditions salt bridge is not required in a galvanic cell?
1 When galvanic cell is used in geyser.
2 When distance between oxidation half cell and reduction half cell is negligible.
3 Electrolytic solution used in both the half cells are of same concentration.
4 When both the electrodes are dipped in the same electrolytic solution.
Explanation:
When both the electrodes are kept in the same solution there will be no requirement of salt bridge.
330044
The electro-chemical cell stops working after some time because
1 Electrode potentials of both electrodes become zero
2 Electrode potentials of both electrodes become equal
3 Temperature of the cell increases
4 The reaction starts proceeding in opposite direction
Explanation:
Electrochemical cell can't work when electrodes have same electrode potential.
CHXII03:ELECTROCHEMISTRY
330045
How can an electrochemical cell be converted into an electrolytic cell?
1 Exchanging the electrodes at anode and cathode.
2 Applying an external opposite potential greater than .
3 Applying an external opposite potential lower than
4 Reversing the flow of ions in salt bridge.
Explanation:
If an electrochemical cell acts as an electrolytic cell. The entire cell reaction will be reversed. During this the the oxidised species will be reduced and reduced species will be oxidised. So, the correct option is (2).
JEE Main - 2024
CHXII03:ELECTROCHEMISTRY
330046
Assertion : For the Daniell cell, with , the application of opposite potential greater than results into flow of electrons from cathode to anode. Reason : is deposited at anode and is dissolved at cathode.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
When the opposing potential surpasses the cell potential, causing a reversal in current flow, the electrochemical cell undergoes a change in the direction of the overall cell reaction, converting zinc ions to solid zinc at the anode and oxidizing copper to produce copper ions at the cathode. So, option (2) is correct.
CHXII03:ELECTROCHEMISTRY
330047
In which of the following conditions salt bridge is not required in a galvanic cell?
1 When galvanic cell is used in geyser.
2 When distance between oxidation half cell and reduction half cell is negligible.
3 Electrolytic solution used in both the half cells are of same concentration.
4 When both the electrodes are dipped in the same electrolytic solution.
Explanation:
When both the electrodes are kept in the same solution there will be no requirement of salt bridge.
330044
The electro-chemical cell stops working after some time because
1 Electrode potentials of both electrodes become zero
2 Electrode potentials of both electrodes become equal
3 Temperature of the cell increases
4 The reaction starts proceeding in opposite direction
Explanation:
Electrochemical cell can't work when electrodes have same electrode potential.
CHXII03:ELECTROCHEMISTRY
330045
How can an electrochemical cell be converted into an electrolytic cell?
1 Exchanging the electrodes at anode and cathode.
2 Applying an external opposite potential greater than .
3 Applying an external opposite potential lower than
4 Reversing the flow of ions in salt bridge.
Explanation:
If an electrochemical cell acts as an electrolytic cell. The entire cell reaction will be reversed. During this the the oxidised species will be reduced and reduced species will be oxidised. So, the correct option is (2).
JEE Main - 2024
CHXII03:ELECTROCHEMISTRY
330046
Assertion : For the Daniell cell, with , the application of opposite potential greater than results into flow of electrons from cathode to anode. Reason : is deposited at anode and is dissolved at cathode.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
When the opposing potential surpasses the cell potential, causing a reversal in current flow, the electrochemical cell undergoes a change in the direction of the overall cell reaction, converting zinc ions to solid zinc at the anode and oxidizing copper to produce copper ions at the cathode. So, option (2) is correct.
CHXII03:ELECTROCHEMISTRY
330047
In which of the following conditions salt bridge is not required in a galvanic cell?
1 When galvanic cell is used in geyser.
2 When distance between oxidation half cell and reduction half cell is negligible.
3 Electrolytic solution used in both the half cells are of same concentration.
4 When both the electrodes are dipped in the same electrolytic solution.
Explanation:
When both the electrodes are kept in the same solution there will be no requirement of salt bridge.
330044
The electro-chemical cell stops working after some time because
1 Electrode potentials of both electrodes become zero
2 Electrode potentials of both electrodes become equal
3 Temperature of the cell increases
4 The reaction starts proceeding in opposite direction
Explanation:
Electrochemical cell can't work when electrodes have same electrode potential.
CHXII03:ELECTROCHEMISTRY
330045
How can an electrochemical cell be converted into an electrolytic cell?
1 Exchanging the electrodes at anode and cathode.
2 Applying an external opposite potential greater than .
3 Applying an external opposite potential lower than
4 Reversing the flow of ions in salt bridge.
Explanation:
If an electrochemical cell acts as an electrolytic cell. The entire cell reaction will be reversed. During this the the oxidised species will be reduced and reduced species will be oxidised. So, the correct option is (2).
JEE Main - 2024
CHXII03:ELECTROCHEMISTRY
330046
Assertion : For the Daniell cell, with , the application of opposite potential greater than results into flow of electrons from cathode to anode. Reason : is deposited at anode and is dissolved at cathode.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
When the opposing potential surpasses the cell potential, causing a reversal in current flow, the electrochemical cell undergoes a change in the direction of the overall cell reaction, converting zinc ions to solid zinc at the anode and oxidizing copper to produce copper ions at the cathode. So, option (2) is correct.
CHXII03:ELECTROCHEMISTRY
330047
In which of the following conditions salt bridge is not required in a galvanic cell?
1 When galvanic cell is used in geyser.
2 When distance between oxidation half cell and reduction half cell is negligible.
3 Electrolytic solution used in both the half cells are of same concentration.
4 When both the electrodes are dipped in the same electrolytic solution.
Explanation:
When both the electrodes are kept in the same solution there will be no requirement of salt bridge.
