Chemistry Chapter 10 Electrochemistry Mcqs Test Online Punjab Class 11th

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Question 1 of 12

Chemistry

1. 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. 1

0. 2

0. 03

Question 1 of 12

Question 2 of 12

2. A fuel call operates at ________ temperature

Low

High

Medium

Room

Question 2 of 12

Question 3 of 12

3. 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 ampere

2 Coulombs

1F

Question 3 of 12

Question 4 of 12

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

NO₂

N₂O₄

N₂O₃

N₂O₅

Question 4 of 12

Question 5 of 12

5. Oxidation number of S in Na₂S₂O₃ is

+3

+2

+4

+1

Question 5 of 12

Question 6 of 12

6. E⁰_sn = -0.14V, E⁰_pb = -013V

Both can oxidize each other

Pb⁺² can oxidize Sn

Both can reduce each other

Sn⁺² can oxidize Pb

Question 6 of 12

Question 7 of 12

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

C to D

K to O

U to Z

A to B

Question 7 of 12

Question 8 of 12

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

Ions

Anions

Cations

Electrons

Question 8 of 12

Question 9 of 12

9. Oxidation number of an element in Free state is

Positive

Zero

Negative

± 1

Question 9 of 12

Question 10 of 12

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

Anode

Cathode

Electrolyte

Salt bridge

Question 10 of 12

Question 11 of 12

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

It can conduct electricity in molten state

It can conduct electricity in the solid form

It can conduct electricity in the form of aqueous solution

It can be an acid, a base or a salt

Question 11 of 12

Question 12 of 12

12. The oxidation number of Cl in HCIO₂ is

+1

-1

+5

+7

Question 12 of 12

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