Punjab 9th Class Chemistry Chapter 7 Electrochemistry Mcqs Test Online

Q: How can I prepare for Punjab 9th Class Chemistry Chapter 7 Electrochemistry Mcqs Test Online?

You can prepare for Punjab 9th Class Chemistry Chapter 7 Electrochemistry Mcqs Test Online by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. In which of the following changes, the nitrogen atom is reduced.

Answer

N₂ to NO

Answer

N₂ to NO₂

Answer

N₂ to NH₃

Answer

N₂ to HNO₃

Question 2

2. Which of the following changes reaction is an example of oxidation

Answer

Chlorine molecule to chloride ion

Answer

Silver atoms to silver (I) ion

Answer

Oxygen molecule to oxide ion

Answer

Iron (III) ion to iron (II) ion

Question 3

3. Which of the following elements in the given reaction is reduced?
ZnO + H₂ → Zn + H₂O

Question 4

4. Consider the following reaction:
H₂S + Cl₂ → 2HCl + S
In this reaction H₂S behave as

Answer

Reducing agent

Answer

Oxidizing agent

Answer

Electrolyte

Question 5

5. The oxidation state of Cr in K₂Cr₂O₇ is

Question 6

6. Which of the following statement is not correct about the galvanic cell:

Answer

Cations are reduced at cathode

Answer

Anions are oxidized at anode

Answer

Electrons flow from cathode to anode

Answer

Oxidation occurs at anode

Question 7

7. Which of the following is not true about the Daniel cell:

Answer

Half-cell of an active metal acts as cathode

Answer

Half-cell contains an element in contact with its ions in aqueous solution

Answer

A salt bridge connects the two half cells.

Answer

A spontaneous oxidation-reduction reaction generates electricity.

Question 8

8. Which of the following do not involve electrolytic process?

Answer

Refining of copper

Answer

Manufacture of sodium from NaCl

Answer

Electroplating of steel

Answer

Reduction of metal oxide by a reducing agent

Question 9

9. Galvanizing is:

Answer

Coating with Sn

Answer

Coating with Zn

Answer

Coating with Cr

Answer

Coating with Cu

Question 10

10. Which of the following is true for the Nelson cell:

Answer

Sodium metal is produced at anode

Answer

Chlorine gas is produced at anode

Answer

Hydrogen gas is produced at anode

Answer

Sodium ions are not reduced at cathode

Question 11

Loading...

Punjab 9th Class Chemistry Chapter 7 Electrochemistry Mcqs Test Online

Punjab 9th Class Chemistry Chapter 7 Electrochemistry Punjab Class 9th

Chemistry

Guide for Punjab Board Students

Top Scoring Tips for Punjab:

More Related Resources

Leave a Reply Cancel reply