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The outer crust is made up of?
  • a)
    Aluminium
  • b)
    Silica
  • c)
    Silica and Aluminium
  • d)
    None of the above
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The outer crust is made up of?a)Aluminiumb)Silicac)Silica and Aluminiu...
The correct option is Silica and Aluminium.
  • In the Outer Crust, the main constituents are Silica and Aluminum whose mean average density is 2.7 g/cm3 and which is collectively called SIAL (i.e. Silica + Aluminum).
  • In the Inner Crust, the constituents are Silica and Magnesium.
  • The constituents are collectively known as SIMA (Silica + Magnesium). The average mean density of SIMA is 3 g/cm3
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The outer crust is made up of?a)Aluminiumb)Silicac)Silica and Aluminiumd)None of the aboveCorrect answer is option 'C'. Can you explain this answer?
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