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Why is phosphorus kept under water ?

  • to make it wet
  • to make it durable
  • water forms a protective coating on it
  • to save it from catching fire when exposed to dry air

Answer: Option D

Similar Questions :

1. Nail polish remover contains ?

  • benzene
  • acetic acid
  • acetone
  • petroleum ether

Answer: Option C

2. What is metallurgy ?

  • process of extracting metal in pure form from its ore.
  • process of creating alloys of metals.
  • process of making metals live long.
  • None of above.

Answer: Option A

3. Who proposed first atomic theory ?

  • E.Rutherford
  • De Broglie
  • John Dalton
  • D.I.Mendeleef

Answer: Option C

4. Which of the primary component of natural gas?

  • Ethane
  • Propane
  • Methane
  • Butane

Answer: Option C

5. Petroleum is found in ?

  • Marshy land
  • Metamorphic rocks
  • Igneous rock
  • Sedimentary rocks

Answer: Option D

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