Chemistry Chapter 10 Electrochemistry Mcqs Test Online Punjab Class 11th

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Question 1 of 12

Chemistry

1. Which of these is not true of an electrolyte.

It can conduct electricity in the solid form

It can conduct electricity in molten state

It can conduct electricity in the form of aqueous solution

It can be an acid, a base or a salt

Question 1 of 12

Question 2 of 12

2. In the electrolysis of molten ZnCl₂, the cathode reaction is Zn⁺² + 2e⁻ → Zn what quantity of electricity is used up for the production of half mole of Zn

2 Coulombs

2 ampere

2F

1F

Question 2 of 12

Question 3 of 12

3. In an electrolytic cell, the name of electrode which has more negative potential begins with the letter

A to B

K to O

U to Z

C to D

Question 3 of 12

Question 4 of 12

4. A fuel call operates at ________ temperature

Room

High

Medium

Low

Question 4 of 12

Question 5 of 12

5. In which of the following compounds oxidation number of N is +5

NO₂

N₂O₅

N₂O₄

N₂O₃

Question 5 of 12

Question 6 of 12

6. Oxidation number of an element in Free state is

Negative

Positive

Zero

± 1

Question 6 of 12

Question 7 of 12

7. How many moles of Cr will be produced by 1.5 Faradays of electricity by the following reaction Cr⁺³ + 3e⁻ → Cr

0. 5

0. 2

0. 03

0. 1

Question 7 of 12

Question 8 of 12

8. The electrode through which the electron enter the electrolytic solution is

Cathode

Salt bridge

Electrolyte

Anode

Question 8 of 12

Question 9 of 12

9. The oxidation number of Cl in HCIO₂ is

+5

+7

+1

-1

Question 9 of 12

Question 10 of 12

10. E⁰_sn = -0.14V, E⁰_pb = -013V

Sn⁺² can oxidize Pb

Pb⁺² can oxidize Sn

Both can reduce each other

Both can oxidize each other

Question 10 of 12

Question 11 of 12

11. The passage of current through an electrolyte is due to the movement of

Anions

Electrons

Ions

Cations

Question 11 of 12

Question 12 of 12

12. Oxidation number of S in Na₂S₂O₃ is

+3

+2

+1

+4

Question 12 of 12

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