Chemistry Questions Answers

• 22. What is metallurgy ?

  1. process of extracting metal in pure form from its ore.
  2. process of creating alloys of metals.
  3. process of making metals live long.
  4. None of above.

  Answer :

  Option A

• 23. Which element found in all organic compounds ?

  1. carbon
  2. nitrogen
  3. calcium
  4. none of them

  Answer :

  Option A

• 24. The most abundant rare gas in the atmosphere is ?

  1. He
  2. Ne
  3. Ar
  4. Xe

  Answer :

  Option C

• 25. What is the hardest form of carbon ?

  1. coke
  2. graphite
  3. charcoal
  4. diamond

  Answer :

  Option D

• 26. What is extracted from Bauxite ?

  1. Mica
  2. Aluminium
  3. Copper
  4. Tin

  Answer :

  Option B

• 27. All noble gases are ?

  1. colourless
  2. colourless
  3. colourless and odourless
  4. colourless and but have odour

  Answer :

  Option C

• 28. Which of the following elements behave chemically both as a metal and a non metal?

  1. Boron
  2. Carbon
  3. Argon
  4. Mercury

  Answer :

  Option A