Rocks and Minerals Quiz Question with Answer

11. The earth crust is made up of

  1. rocks
  2. mineral
  3. silicon and aluminium
  4. all the above

12. The example of metamorphic rock is

  1. basalt
  2. dolomite
  3. marble
  4. shale

13. The example of sedimentary rock is

  1. granite
  2. basalt
  3. limestone
  4. marble

14. The hardest gemstone is

  1. ruby
  2. sapphire
  3. black diamond
  4. emerled

15. The rock formed by the cooling of magma under the surface of earth is

  1. basalt
  2. granite
  3. limestone
  4. haematite

16. Which one of these is formed from the foam on the top of the lava stream when lava cools down quickly?

  1. Pumice
  2. Obsidian
  3. Basalt
  4. Tuff

17. Which one of these is present in granite rock?

  1. Amethyst
  2. Garnet
  3. Malachite
  4. Ruby

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