Chemistry Chapter 10 Electrochemistry Mcqs Test Online Punjab Class 11th

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Question 1 of 12

Chemistry

1. Oxidation number of S in Na₂S₂O₃ is

+4

+2

+3

+1

Question 1 of 12

Question 2 of 12

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

It can be an acid, a base or a salt

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

Question 2 of 12

Question 3 of 12

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

N₂O₄

N₂O₅

N₂O₃

NO₂

Question 3 of 12

Question 4 of 12

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

Cathode

Anode

Salt bridge

Electrolyte

Question 4 of 12

Question 5 of 12

5. Oxidation number of an element in Free state is

± 1

Zero

Negative

Positive

Question 5 of 12

Question 6 of 12

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

0. 03

0. 1

0. 2

0. 5

Question 6 of 12

Question 7 of 12

7. A fuel call operates at ________ temperature

Medium

Room

Low

High

Question 7 of 12

Question 8 of 12

8. The oxidation number of Cl in HCIO₂ is

+1

+5

+7

-1

Question 8 of 12

Question 9 of 12

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

Ions

Cations

Anions

Electrons

Question 9 of 12

Question 10 of 12

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

A to B

K to O

C to D

U to Z

Question 10 of 12

Question 11 of 12

11. E⁰_sn = -0.14V, E⁰_pb = -013V

Pb⁺² can oxidize Sn

Sn⁺² can oxidize Pb

Both can oxidize each other

Both can reduce each other

Question 11 of 12

Question 12 of 12

12. 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

1F

2F

2 ampere

Question 12 of 12

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