CBSE  /  Class 11  /  Chemistry  /  Hydrogen

  • 1. 
    Hydrogen has isotopes

  • 2
  • 3
  • 4
  • 5

  • 2. 
    The freezing point of heavy water is

  • 0°C
  • 3. 8°C
  • 4°C
  • 1°C

  • 3. 
    Pure HO is:

  • Semi – solid
  • Liquid
  • Solid
  • Gas

  • 4. 
    _________________ on water decolourises HO

  • O
  • Acidic KMnO solution
  • Black Suspension of Lead Sulphide(PbS)
  • None of these.

  • 5. 
    What is gram equivalent weight of hydrogen peroxide as reductant?

  • 100
  • 125
  • 152
  • None of the Above

  • 6. 
    Hydrogen is the most abundant element on earth after______.

  • Oxygen
  • Carbon
  • Sulphur
  • None of the Above

  • 7. 
    Atomic hydrogen is called

  • Protium
  • Deutrium
  • Nascent Hydrogen
  • Tritium

  • 8. 
    Hydrogen is a good __________ agent.

  • Oxidizing
  • Reducing
  • Acidic
  • Basic

  • 9. 
    The volume of 10 volume HO required to liberate 500 ml of O at S. T. P. is :

  • 25 ml
  • 50 ml
  • 100 ml
  • 125 ml

  • 10. 
    Hydrogen is most __________ element in the universe.

  • Abundant
  • None
  • Both
  • Consumer
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