Cell Constant and Electrochemical Cells Quiz Online Practice Test

1. Which compound features oxygen with a +2 oxidation state?

H2O

H2O2

F2O

SO2

2. Which element acts as the strongest reducing agent?

3. What happens to a cell's voltage when the salt bridge is removed?

It will increase

It will decrease to half

It will decrease to zero

It will not change

4. During the electrolysis of a dilute solution of H2SO4 using a platinum electrode, which gas is evolved at the anode?

SO3

SO2

5. What is the oxidation state of sulfur in Caro’s acid?

6. Which of these substances is the strongest reducing agent?

H2S

H2SO3

SnCl2

HNO2

7. Which substance can function as both an oxidizing and a reducing agent?

KMnO4

K2Cr2O7

HNO3

H2O2

8. How do electrolytes primarily conduct electric current?

By ion movement

Through atomic shifts

Via molecular displacement

Using electron transfer from cathode to anode

9. Defining the Reductant: A Substance Whose Atom's Oxidation Number:

increases

decreases

remains constant

may increases or decreases

10. Which of the following is not typically considered an oxidizing agent?

hydrogen peroxide

potassium dichromate

nitric acid

hydrogen sulphide

11. The conductance in electrolyte conductors arises from:

Either movement of electrons or ions

The flow of free mobile electrons

Movement of ions

None of these

12. The Cell Constant in a Conductivity Cell:

Changes with a change of concentration of electrolyte

Remains constant for a cell

changes with a change of electrolyte

changes with change in temperature

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

It converts chemical energy into electrical energy

It converts electrical energy into chemical energy

It converts metal from its elemental state to the combined state

It converts electrolyte into individual ions

14. What happen in Cu-Zn cell:

Reduction occurs at the copper cathode

Oxidation occurs at the copper cathode

Reduction occurs at the anode

Chemical energy is converted to light energy

15. What happens when a lead storage battery is charged?

Lead dioxide dissolves

Sulphuric acid is regenerated

The lead electrode becomes coated with lead sulfate

The amount of sulfuric acid decreases

16. What occurs during the electrolytic decomposition of dilute sulfuric acid with a platinum electrode at the cathode?

Oxidation

Reduction

Both oxidation and reduction

Neutralization

17. Which colorless gas is released when NH4Cl reacts with zinc in a dry cell battery?

NH4

Cl2

18. Which substances among Na, Hg, S, Pt, and graphite can be used as electrodes in electrolytic cells with aqueous solutions?

Na, Pt, and graphite

Na and Hg

Pt and graphite only

Na and S only

19. Which type of cell converts electrical energy into chemical energy?

Dry cell

Electrochemical cell

Electrolytic cell

None of these

20. In spacecraft, hydrogen-oxygen fuel cells are used to supply:

Power for heat and light

Power for pressure

Oxygen

Water

Test Name:	Cell Constant and Electrochemical Cells
Subject Category:	Chemistry
Test Type:	Multiple Choice Questions
Total Score / Questions:	20 / 20
Time Allowed:	10 Min
Who Should Practice this Test:	Students, job seekers, or professionals preparing for competitive exams and interviews.

Cell Constant and Electrochemical Cells Quiz Online Practice Test

Cell Constant and Electrochemical Cells MCQ Quiz Online Practice Test

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