CBSE  /  Class 12  /  Chemistry  /  Electrochemistry

  • 1. 
    Faraday’s law of electrolysis is related to

  • Atomic number of cation
  • Speed of cation
  • Speed of anion
  • Equivalent weight of electrolyte

  • 2. 
    The molar conductivity is maximum for the solution of concentration

  • 0.004 M
  • 0.002 M
  • 0.005 M
  • 0.001 M

  • 3. 
    Units of the properties measured are given below. Which of the properties has been not matched correctly?

  • Molar conductance = Sm mol
  • Cell constant = m
  • Specific conductance of = S m²
  • Equivalence conductance = S m² (g eq)

  • 4. 
    How long would it take to deposit 50 g of Al from an electrolytic cell containing Al

  • 1.54 h
  • 1.42 h
  • 1.32 h
  • 2.15 h

  • 5. 
    The charge required for reducing 1 mole of MnO\(_{4}^{-}\) to Mn

  • 1.93 × 10
  • 2.895 × 10
  • 4.28 × 10
  • 4.825 × 10

  • 6. 
    How much electricity in in terms of Faraday is required to produce 100 g of Ca from molten CaCl

  • 1F
  • 2F
  • 3F
  • 5F

  • 7. 
    If a current of 1.5 ampere flows through a metallic wire for 3 hours, then how many electrons would flow through the wire?

  • 2.25 × 10
  • 1.13 × 10
  • 1.01 × 10
  • 4.5 × 10

  • 8. 
    How many coulombs of electricity is required to reduce 1 mole of Cr

  • 4 × 96500 C
  • 6 × 96500 C
  • 2 × 96500 C
  • 1 × 96500 C

  • 9. 
    A current of 1.40 ampere is passed through 500 mL of 0.180 M solution of zinc sulphate for 200 seconds. What will be the molarity of Zn

  • 0.154 M
  • 0.177 M
  • 2 M
  • 0.180 M

  • 10. 
    How much time is required to deposit 1 × 10

  • 125 s
  • 115 s
  • 18.7 s
  • 27.25 s
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