CBSE  /  Class 11  /  Chemistry  /  Redox Reactions

  • 1. 
    The oxidation number of Cl in Cl Ois

  • + 7
  • + 5
  • + 3
  • – 7

  • 2. 
    What is known as Autooxidation?

  • Formation of HO by the oxidation of HO
  • Formation of HO by the oxidation of HO.
  • Both (1) and (2) are true
  • None of the above

  • 3. 
    The tendency of an electrode to lose electrons is known as

  • Electrode Potential
  • Reduction Potential
  • Oxidation Potential
  • E. M. F.

  • 4. 
    If equal volumes of 1M KMnO and 1M KCrO solutions are allowed to oxidize Fe in acidic medium. The amount of iron oxidized will be:

  • More with KMnO
  • More with K
  • Equal with both oxidising agents
  • Cannot be determined

  • 5. 
    Which of the following processes does not involve either oxidation or reduction?

  • Formation of slaked lime from quick lime
  • Heating Mercuric Oxide
  • Formation of Manganese Chloride from Manganese oxide
  • Formation of Zinc from Zinc blende

  • 6. 
    One mole of NH loses ten moles of electrons to form a new compound A. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in A? (There is no change in the oxidation state of hydrogen. )

  • -1
  • -3
  • +3
  • +5

  • 7. 
    How many millilitres of 0. 5 M H SO are needed to dissolve 0. 5 g of copper(II)carbonate?

  • 6. 01
  • 4. 5
  • 8. 1
  • 11. 1

  • 8. 
    The oxidation state of Cr in Cr (CO) is

  • 0
  • 2
  • 2
  • 6

  • 9. 
    Which of the following processes does not involve oxidation of iron?

  • Formation of Fe(CO)
  • Liberation of H
  • Rusting of iron sheets.
  • Decolourisation of blue CuSO

  • 10. 
    The number of moles of KMnO reduced by one mole of KI in alkaline medium is

  • One
  • Two
  • Five
  • One fifth.
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