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. 1

0. 2

0. 03

0. 5

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

A to B

K to O

Question 2 of 12

Question 3 of 12

3. A fuel call operates at ________ temperature

High

Low

Room

Medium

Question 3 of 12

Question 4 of 12

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

N₂O₅

N₂O₃

N₂O₄

NO₂

Question 4 of 12

Question 5 of 12

5. The oxidation number of Cl in HCIO₂ is

+5

+7

+1

-1

Question 5 of 12

Question 6 of 12

6. E⁰_sn = -0.14V, E⁰_pb = -013V

Pb⁺² can oxidize Sn

Sn⁺² can oxidize Pb

Both can reduce each other

Both can oxidize each other

Question 6 of 12

Question 7 of 12

7. Oxidation number of S in Na₂S₂O₃ is

+1

+2

+3

+4

Question 7 of 12

Question 8 of 12

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

Salt bridge

Electrolyte

Cathode

Anode

Question 8 of 12

Question 9 of 12

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

Electrons

Anions

Cations

Ions

Question 9 of 12

Question 10 of 12

10. Oxidation number of an element in Free state is

Zero

± 1

Positive

Negative

Question 10 of 12

Question 11 of 12

11. 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

1F

2 ampere

2 Coulombs

Question 11 of 12

Question 12 of 12

12. 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 12 of 12

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