Standard Electrode Potential, Class 12 Chemistry NCERT Solutions

1. There will be total 15 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Following are the values of standard potentials of two half cells, which of the following will be the value of standard cell potential E°cell:

- 0.52 V

+1.02 V

+0.52 V

-1.02 V

Your comments:

Question 1 of 15

2. Four metals A, B ,C and D have standard reduction potential of -3.08V, -1.56V, -0.30V and 0.65V respectively. The metal which is most easily reduced is :

A

C

B

D

Your comments:

Question 2 of 15

3. Two elements A and B have reduction potential 0.34V and 0.25V respectively. Which statement is true regarding these two elements.

B will lose electron easily

A will not undergo reduction easily as compared to B

A will have the same ionization energy than B

B will be the weaker reducing agent

Your comments:

Question 3 of 15

4. The electrode potential measures the :

tendency of a cell reaction to occur

current carried by an elelctrode

tendency of the electrode to gain or lose electrons

difference in the ionisation of electrode and metal ion

Your comments:

Question 4 of 15

5. Consider the following reaction :

-3.16 V

3.16 V

-1.56 V

1.56 V

Your comments:

Question 5 of 15

6. The reduction potential of an element A is 1.71 V. What can be concluded from this?

A will lose electrons easily

A will undergo reduction easily

A will undergo oxidation easily

A will be a good reducing agent

Your comments:

Question 6 of 15

7. Stronger the oxidizing agent, greater is the:

Reactivity

Ionic behaviour

Oxidation potential

Reduction potential

Your comments:

Question 7 of 15

8. Consider the following reaction which of the following statement is true for this cell reaction.
(Zn + Cu²⁺ → Zn²⁺ + Cu)

Zn²⁺ ions are oxidized to Zn

Zn is oxidized to Zn²⁺ ions

Zn is reduced to Zn²⁺ ions

Cu²⁺ ions are oxidized to Cu

Your comments:

Question 8 of 15

9. A half cell reaction A- → A + e- has a large negative reduction potential. It follows that :

A is easily reduced

A ^- is easily reduced

A ^- is easily oxidised

A is easily oxidised

Your comments:

Question 9 of 15

10. If the standard hydrogen electrode acts as an anode, the reaction at anode will be:

A

B

C

D

Your comments:

Question 10 of 15

11. Two elements A and B have reduction potential's 0.23V and 0.46V which statement is true regarding these two elements.

A will have Ionization energy two times than B

A will have Ionization energy half than B

B will lose electrons easily than A

A will lose electrons easily than B

Your comments:

Question 11 of 15

12. Three metals with reduction potentials: A (-0.36V), B (-0.45V) and C (-0.75V) are added separately to three separate beakers containing equal amount of dilute Hydrochloric acid. In which metal the evolution of hydrogen gas will be faster?

B

C

Equal in all the three

A

Your comments:

Question 12 of 15

13. For elements A, B and C the standard reduction potential are +0.65V , -2.25V and -0.45V respectively. The correct order of their reducing power is:

A>B>C

C>B>A

A>C>B

B>C>A

Your comments:

Question 13 of 15

14. The unit of cell constant is:

ohm-cm

ohm^-1 cm² eq^-1

cm^-1

ohm^-1

Your comments:

Question 14 of 15

15. The reduction potential of an element A is -2.71V.What can be concluded from this?

A will be a good oxidising agent

A will accept electrons easily

A will undergo reduction easily

A will undergo oxidation easily

Your comments:

Question 15 of 15

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