Chemistry Chapter 10 Electrochemistry Mcqs Test Online Punjab Class 11th

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Question 1 of 12

Chemistry

1. The oxidation number of Cl in HCIO₂ is

+1

-1

+5

+7

Question 1 of 12

Question 2 of 12

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

U to Z

C to D

K to O

A to B

Question 2 of 12

Question 3 of 12

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

0. 2

0. 03

0. 1

0. 5

Question 3 of 12

Question 4 of 12

4. Oxidation number of an element in Free state is

± 1

Zero

Negative

Positive

Question 4 of 12

Question 5 of 12

5. 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 the form of aqueous solution

It can conduct electricity in molten state

Question 5 of 12

Question 6 of 12

6. E⁰_sn = -0.14V, E⁰_pb = -013V

Sn⁺² can oxidize Pb

Both can reduce each other

Pb⁺² can oxidize Sn

Both can oxidize each other

Question 6 of 12

Question 7 of 12

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

Anode

Salt bridge

Electrolyte

Cathode

Question 7 of 12

Question 8 of 12

8. 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

2F

2 Coulombs

1F

2 ampere

Question 8 of 12

Question 9 of 12

9. Oxidation number of S in Na₂S₂O₃ is

+2

+1

+4

+3

Question 9 of 12

Question 10 of 12

10. A fuel call operates at ________ temperature

High

Low

Room

Medium

Question 10 of 12

Question 11 of 12

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

Ions

Anions

Cations

Electrons

Question 11 of 12

Question 12 of 12

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

N₂O₅

N₂O₄

N₂O₃

NO₂

Question 12 of 12

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