1st Year Chemistry Chapter 6 Electrochemistry MCQs with Answers

This is the place where you can find the 1st Year Chemistry Chapter 6 Electrochemistry MCQs. These Multiple Choice Questions will help you to prepare for entry tests. There is a branch of Chemistry in which we study the interconversion of chemical energy and electrical energy and it is called electrochemistry. In this chapter, there is the concept of Electrolysis which is chemical decomposition by passing the electric current through a liquid or solution containing ions. Then there are different types of electrochemical cells and measurements of electrode potential. In the end, there are electrochemical series and fuel cells. Now move toward the important MCQs of this chapter so that you can prepare for the Entrance Test. Solve the below-given quiz which will help you to prepare for the entry test.

1st Year Chemistry Chapter 6 Electrochemistry MCQs with Answers

274

Chemistry Chapter 6

1 / 20

The oxidation number of sulphur in Na2S4O6 is:

+2.5

2 / 20

The oxidation state of Mn in K2MnO4 is:

3 / 20

The change in the oxidation state of nitrogen in the following reaction is:

Cu+HNO3¾¾® Cu(NO3)2 +NO2+H2O

+5 to –2

+5 to 0

+5 to +4

0 to –4

4 / 20

In which of the following reactions, hydrogen behaves as an oxidizing agent:

H +Cl2 ---> 2HCl

2Na +H2 ---> 2NaH

C2H4 +H2 ---> C2H6

N2 + 3H2 ---> 2NH3

5 / 20

Which of the following has the same oxidation state in all of its compounds:

6 / 20

Which of the following is the function of the salt bridge?

To maintain flow of electric current through exterior

To keep separate both solutions

To keep electrical neutrality

All of the above

7 / 20

Which of the following statements is correct?

Mg and Ca are extracted by electrolysis of their fused chlorides.

Al is obtained by electrolysis of fused bauxite

Electrolytic cell is used for the purification of Cu

All of the above

8 / 20

Which is the strongest reducing agent?

9 / 20

The electrode potentials of a few elements are given:

-0.76V

+0.34V

-1.0V

-1.5V

10 / 20

Which statement is correct about electrochemical series?

Smaller is the standard reduction potential, stronger is the reducing agent.

Greater is the standard reduction potential, greater is oxidation power

Every top metal can displaces lower one while lower non-metal can displace higher one

All of the above

11 / 20

Which is the best reducing agent regarding electrochemical series?

12 / 20

In which of the following cells, zinc is used as anode?

Dry alkaline

Silver oxide cell

Galvanic cell

All of above

13 / 20

Which of the following cell is considered a rechargeable cell / secondary cell?

Dry alkaline cell

Silver oxide cell

Down’s cell

Nickel cadmium cell

14 / 20

By the electrolysis of dil. CuSO4 solution, which is deposited at the cathode?

2 SO4-

15 / 20

By the electrolysis of concentrated NaCl solution, which of the following is collected at the cathode?

Hydrogen

Oxygen

Chlorine

NaOH

16 / 20

In which type of cell, electric current is consumed?

Fuel cell

Lead storage cell

Silver oxide cell

Nelson’s cell

17 / 20

Which is an electrolytic cell?

Down’s cell

Dry alkaline cell

Silver oxide

Nickle cadmium cell

18 / 20

During electrolysis of dilution KNO3, which of them is collected at the anode?

19 / 20

Which is an inert electrode?

20 / 20

Which statement is correct for galvanic cell:

Anode = negative

electrons enter the cell = anode

Cathode = negative

reduction occurs at anode

Your score is

1st Year Chemistry Chapter 6 Electrochemistry MCQs with Answers

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