Chemistry Chapter 10 Electrochemistry Mcqs Test Online Punjab Class 11th

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Question 1 of 12

Chemistry

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

Anode

Salt bridge

Cathode

Electrolyte

Question 1 of 12

Question 2 of 12

2. The oxidation number of Cl in HCIO₂ is

+1

+5

-1

+7

Question 2 of 12

Question 3 of 12

3. Oxidation number of S in Na₂S₂O₃ is

+1

+2

+3

+4

Question 3 of 12

Question 4 of 12

4. E⁰_sn = -0.14V, E⁰_pb = -013V

Sn⁺² can oxidize Pb

Both can reduce each other

Both can oxidize each other

Pb⁺² can oxidize Sn

Question 4 of 12

Question 5 of 12

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

N₂O₃

N₂O₅

N₂O₄

NO₂

Question 5 of 12

Question 6 of 12

6. A fuel call operates at ________ temperature

Medium

Low

High

Room

Question 6 of 12

Question 7 of 12

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

Anions

Electrons

Cations

Ions

Question 7 of 12

Question 8 of 12

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

It can conduct electricity in molten state

It can be an acid, a base or a salt

It can conduct electricity in the form of aqueous solution

It can conduct electricity in the solid form

Question 8 of 12

Question 9 of 12

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

U to Z

C to D

A to B

K to O

Question 9 of 12

Question 10 of 12

10. 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 ampere

2F

1F

2 Coulombs

Question 10 of 12

Question 11 of 12

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

0. 1

0. 5

0. 2

0. 03

Question 11 of 12

Question 12 of 12

12. Oxidation number of an element in Free state is

Zero

Positive

Negative

± 1

Question 12 of 12

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