Electrochemistry MCQ for NEET Chemistry with Answers

Electrochemistry MCQ: Electrochemistry is an essential chapter in class 12 chemistry that studies how chemical reactions produce and use electrical energy. For NEET preparation, the Electrochemistry NEET MCQ consists of multiple-choice questions designed to test your knowledge of these reactions, electrochemical cells, and standard electrode potentials.

Electrochemistry MCQ for NEET

Electrochemistry MCQ Class 12 Chemistry

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Electrochemistry NEET Questions With Solutions

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1. Which of the following statements is correct about the galvanic cell?

1. It converts chemical energy into electrical energy.
2. It converts electrical energy into chemical energy.
3. It converts metal from its free state to its combined state.
4. It converts electrolytes into individual ions.

2. A galvanic cell consists of:

1. a cadmium cell
2. two half cells
3. three half cells
4. Lead accumulation.

3. A device used to convert chemical energy into electrical energy is called________.

1. An electrolytic cell
2. Voltaic cell
3. A coulometer.
4. A Voltagemeter

4. In a galvanic cell, the salt bridge is used to:

1. To produce current at a constant strength.
2. Facilitate the continuity of the cell reaction.
3. Prevent the accumulation of charges around the electrodes.
4. All of these

5. In a galvanic cell, the reactions taking place in the anodic half-cell and the cathodic half-cell will be:

1. Reduction
2. Oxidation
3. Oxidation and reduction
4. Reduction and oxidation

6. In a galvanic cell, electron flow will be from:

1. Negative electrode to positive electrode
2. Positive electrode to negative electrode
3. There will be no flow of electrons
4. Cathode to anode in the external circuit

7. In voltaic cells, the electrons are lost during the oxidation flow from:

1. Cathode to anode
2. Anode to cathode
3. Remains as it is in the electrolytic solution
4. Electrons flow from the electrolytic solution to the electrode

8. In galvanic cell:

1. Oxidation occurs at the anode
2. Reduction occurs at the cathode
3. Chemical energy is converted into electrical energy
4. All of these

9. Which of the following statements is correct for galvanic cells written in an abbreviated form?

1. The left electrode is a cathode
2. The right electrode is an anode
3. The left electrode is the positive terminal
4. The right electrode is the positive terminal

10. Which of the following is not true of a galvanic cell represented in the IUPAC system?

1. The right-hand electrode is a +ve terminal.
2. The right-hand electrode acts as a cathode.
3. Electrons are given out in the external circuit from the anode.
4. Electrons are given out in the external circuit from the cathode

11. In a galvanic cell, by which the negative ions are displaced?

1. Electrode [2013]
2. Salt bridge
3. External path of copper wire
4. Electron

12. Statement-I: The salt bridge is used generally in electrochemical cells.

Statement II: The ions of the electrolyte used in the salt bridge should have nearly the same transport numbers.

1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct and Statement II is incorrect.
4. Statement I is incorrect and Statement II is correct.

13. A salt bridge is used because it:

1. maintains the electrical neutrality of the two half-cells.
2. enhances the flow of electrons by overcoming the liquid junction potential.
3. provides the lost ions.
4. forms insoluble precipitates with the electrolytes in the two half-cells.

14. If a salt bridge is removed between the two half cells, the voltage:

1. drops to zero
2. does not change
3. increases rapidly
4. increases gradually

15. The incorrect statement is:

1. The salt bridge connects two half-cells.
2. The salt bridge maintains electrical neutrality.
3. Salt bridge minimizes liquid junction potential.
4. Salt bridge increases the EMF of the cell.

16. Daniell's cell is:

1. an irreversible voltaic cell
2. reversible voltaic cell
3. a reversible secondary cell
4. irreversible secondary cell

17. In a Daniell cell,

1. The chemical energy liberated during the redox reaction is converted to electrical energy.
2. The electrical energy of the cell is converted to chemical energy.
3. The energy of the cell is utilized in the conduction of the redox reaction.
4. The potential energy of the cell is converted into electrical energy.

18. Which of the following is incorrect?

1. Zinc acts as an anode in the Daniell cell.
2. In a Li-Zn couple, zinc acts as a cathode.
3. Iron will displace copper in the solution.
4. Tin displaces zinc in solution.

19. The electrode with the highest reduction potential is written at:

1. The extreme left
2. The extreme right
3. In the middle
4. Anywhere

20. Which of the following statements is correct?

1. The cathode is -ve terminal in both galvanic and electrolytic cells
2. The anode is +ve terminal in both galvanic and electrolytic cells
3. The cathode and anode are -ve terminals in an electrolytic and galvanic cell.
4. The cathode and anode are +ve terminals in electrolytic and galvanic cells.

21. In a galvanic cell external potential is applied alternately as 1.0 V and 1.2 V then it behaves as a .......... and ........... cell.

1. Electrochemical cells and electrolytic
2. Electrolytic cell and electrochemical cell
3. Both potential electrochemical cell
4. Both potential electrolytic cell

22. Which of the following is correct?

1. The cathode is a positive terminal in an electrolytic cell
2. The cathode is a negative terminal in a galvanic cell
3. Reduction occurs at the cathode in each of the cells
4. Oxidation occurs at the cathode in each of the cells

23. The following statements are correct with respect to both electrolytic cells and galvanic cells;

1. In both cells, the anode is shown by the +ve sign.
2. In both cells, the cathode is shown by the -ve sign.
3. In both cells, a reduction reaction takes place at the cathode.
4. In both cells, an oxidation reaction takes place at the cathode

24. Assertion (A): The Anode is the electrode at which oxidation occurs and the cathode is the electrode at which reduction occurs.

Reason (R): Anode and cathode in electrochemical cells and electrolytic cells have opposite polarities.

1. Both Assertion (A) and Reason (R) are correct and Reason (R) is the correct explanation for Assertion (A).
2. Both Assertion (A) and Reason (R) are correct but Reason (R) is not the correct explanation for Assertion (A).
3. Assertion (A) is correct but Reason (R) is incorrect.
4. Both Assertion (A) and Reason (R) are incorrect.

25. Which of the following statements about galvanic and electrolytic cells is correct?

1. The electrons in the external wire flow from the cathode to the anode in an electrolytic cell.
2. Oxidation occurs at the cathode of both cells.
3. Both (1) and (2)
4. None of them.

26. The electrode potential measures:

1. Tendency of the electrode to gain or lose electrons.
2. Electron affinity for elements.
3. Difference in the ionization potential of electrode and metal ion.
4. Heat from combustion.

27. The cathodic standard reduction potential minus anodic standard reduction potential is equal to:

1. Faraday
2. Coulomb
3. Cell potential
4. Ampere

28. A standard hydrogen electrode has a zero potential because:

1. Hydrogen can be most easily oxidized.
2. The electrode potential is assumed to be zero.
3. Hydrogen has only one electron.
4. Hydrogen is the lightest element.

29. The standard hydrogen electrode potential is 0.0 V. How can it be formed?

1. Experimentally
2. According to the definition,
3. Cu is taken as a cathode and calculation is done
4. Zn is taken as an anode and calculation is done