11th Class Chemistry Chapter 10 MCQs with Answers

Welcome to the 11th Class Chemistry Chapter 10 MCQs Online Test. We are presenting you with top MCQ questions from the 11th Class Chemistry Chapter Basic concept of Chemistry

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11th Class Chemistry Chapter 10 MCQs with Answers

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This is a free platform for students to prepare for Chemistry Exams for Class 11 to get the best accomplishments in annual exams. 11th class Students can analyze themself by attempting this online test system as many times as they want until they find themself fully prepared.

MCQs Class 11 Chemistry with Answers

The purpose of these online MCQs tests is to help you evaluate your 11th Class Chemistry Chapter 10 MCQs. These Multiple Choice Questions (MCQs) will prepare you for your academic success in the 11th Class Exams. 11th Class Chemistry Chapters include Chapter 1 Basic concept, Chapter 2 Experimental Techniques in Chemistry, Chapter No 3 Gases, Chapter 4 Liquids & Solids, Chapter 5 Atomic Structure, Chapter 6 Chemical Bonding, Chapter 7 Thermochemistry, Chapter 8 Chemical Equilibrium, Chapter 9 Solutions, Chapter 10 Electrochemistry and Chapter 11 Reaction Kinetics. 

What is Electrochemistry?

Electrochemistry is the study of chemical processes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction (“redox”) reaction

Chapter 10 Electrochemistry

1. Reduction always takes place:

1. At anode
2. At cathode
3. At both electrodes
4. does not occur at electrodes

2. The electrolyte KOH is used in cell:

1. Lead accumulator All Past P
2. e Ni-Cd cell
3. Alkaline battery
4. Silver oxide battery

3. In the reaction 2Fe + 3Cl₂_ 2FeCl₃:

1. Fe is reduced
2. Fe is oxidized
3. Cl₂ is oxidized
4. None of these happens

4. Oxidation state of hydrogen in CaH₂ is:

1. +1
2. -1
3. +2
4. zero

5. Cu metal can be purified in electrolytic cell by making the impure Cu as:

1. Anode
2. Cathode
3. Anode and Cathode
4. Depends upon nature of solution

6. Loss of electrons is called:

1. Oxidation
2. Reduction
3. Hydration
4. Dehydration

7. Fuel cells convert chemical energy into:

1. Heat energy
2. Light energy
3. Electrical energy
4. Mechanical energy

8. Electrolysis is used for:

1. Electroplating
2. Manufacture of sodium metal
3. Manufacture of Al
4. All of these

9. Nelson’s cell and Down’s cell are example of:

1. Electrochemical cell
2. Galvanic cell
3. Electrolytic cell
4. None of these

10. The oxidation number of Cr in K₂Cr₂O₇ is:

1. +14
2. +12
3. +6
4. +13

11. The electrolyte used in fuel cell is:

1. Aqueous Naci
2. Molten NaCl
3. KOH
4. NaNO₃

12. Which one is not an electrolyte:

1. Aqueous Naci
2. Aqueous CuSO₄
3. Cu metal
4. H₂SO₄

13. Oxidation state of Mn is MnO₄^2-.is

1. + 4
2. +6
3. +5
4. -6

14. In H₂O₂ the oxidation state of oxygen is:

1. +1
2. -1
3. +2
4. -2

15. Electrode potential of S.H.E arbitrarily taken in volts is:

1. 0.00
2. 1.00
3. 0.01
4. 0.50

16. Oxidation number of chromium in K₂Cr₂O₇ is:

1. 2
2. 4
3. 6
4. 12

17. E.M.f of Zn-Cu cell is:

1. 0.0V
2. 0.5 V
3. 1.0V
4. 1.10V

18. The oxidation number of Mn in KMnO₄ is:

1. 3
2. 5
3. 7
4. 9

19. The oxidation potential of (S.H.E) is:

1. 0.02V
2. 0.1V
3. 0.00V
4. 0.20V

20. The highest reduction potential in the electrochemical series is of Fz and its value is:

1. +3.87V
2. 3.87V
3. +2.87 V
4. -2.87V

21. Percentage of H2SO4 used in lead accumulator is:

1. 40%
2. 25%
3. 30%
4. 50%

22. Cathode in NICAD cell is:

1. Ag₂O
2. NiO₂
3. Cd
4. Zn

23. According to classical concept, oxidation involves:

1. Addition of oxygen
2. Removal of hydrogen
3. Increase in oxidation state
4. All of above

24. In Na₂O₂, the oxidation state of oxygen is:

1. -2
2. +2
3. -1
4. +1

25. The extraction of Na-metal by electrolysis of fused NaCl is carried out in:

1. Down’s cell
2. Fuel cell
3. Nelson’s cell
4. Voltaic cell

26. When one metal is deposited on the surface of the other by the process of electrical current, it is called:

1. Electrolysis
2. Electrolytic refining
3. Electroplating
4. Electrolytic

Sulphur has the highest state in:

1. SO₂
2. SOD
3. H₂S
4. H₂SO₀

28. The cell in which electrical energy is converted into chemical energy is called:

1. Galvanic cell
2. Electrolytic cell
3. Fuel cell
4. Daniel cell

29. In rusting of iron shown by the reaction 4Fe + 3O₂ → 2F₂O₃, Iron is:

1. Precipitated
2. Reduced
3. Hydrolyzed
4. Oxidized

30. Electrochemical series is the arrangement of the electrodes in:

1. Increasing order of reduction potentials
2. Decreasing order of reduction potentials
3. Increasing order of oxidation reduction potential
4. there is not fixed arrangement

31. When aqueous NaCl is electrolyzed, which of the following get discharged at cathode:

1. H⁺
2. Na
3. OH
4. CI

32. The oxidation number of chromium in Cr₂O₃ is:

1. +3
2. +4
3. +6
4. +12

33. Gain of electrons is called:

1. Oxidation
2. Reduction
3. Dissociation
4. Electrolysis

34. A decrease in oxidation number is called:

1. Oxidation
2. Reduction
3. Neutralization
4. e.m.f

35. Electrolysis is the process in which a chemical reaction takes place at the expense of:

1. Chemical energy
2. Electrical energy
3. Heat energy
4. Solar energy

36. Those cells which cannot be recharged are called:

1. Primary cell
2. Secondary cell
3. Tertiary cell
4. None of these

37. Fuel cell converts chemical energy into:

1. Heat energy
2. Electrical energy
3. Magnetic energy
4. Sound energy

38. Which one of the following cells is used for the extraction of Na metal:

1. Nelson’s cell
2. Galvanic cell
3. Down’s cell
4. All of these cells

39. Oxidation state of carbon in glucose (C₆H₁₂O₆) is:

1. Zero
2. One
3. Two
4. Four

40. The oxidation number of nitrogen in HNO₃ is:

1. +3
2. -3
3. -5
4. +5

41. The best reducing agent is:

1. F¹
2. CI^-1
3. Br^-1
4. I^-1

42. Galvanic cells which cannot be re-charged are called:

1. Diffused cells
2. Secondary cells
3. Tertiary cells
4. Primary cells

43. Oxidation number of oxygen in OF₂ is:

1. Zero
2. -1/2
3. +2
4. -1