Chemistry Mcq Questions Fr Class 11 Pdf Download Chapter 10 | Online Mcq Test For Class 11 Chemistry

Print/Downlaod pdf


We are providing accurate Some Basic Concepts of Chemistry Class 11 Mcq with Answers. Firstly You can read First year some basic concepts of chemistry class 11 mcq with answers pdf.

11th class chemistry mcqs
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 1 | Online Mcq Test For Class 11 Chemistry
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 1Chemistry Mcq Questions For Class 11 Pdf Download Chapter 2
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 3 Chemistry Mcq Questions For Class 11 Pdf Download Chapter 4
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 5 Chemistry Mcq Questions For Class 11 Pdf Download Chapter 6
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 7 Chemistry Mcq Questions For Class 11 Pdf Download Chapter 8
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 9 Chemistry Mcq Questions For Class 11 Pdf Download Chapter 10
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 11 Chemistry Mcq Questions For Class 11 Pdf Download Chapter 12
Chemistry Mcq Questions For Class 11 Pdf Download Chapter 13 Chemistry Mcq Questions For Class 11 Pdf Download Chapter 4
Chemistry Mcq Questions For Class 11 Pdf Download Chapter

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 MnO42-.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