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NDA 1 2025 GAT, question 87

Topic: Geography

Q87

Which of the following is the correct ascending order of the given minerals in terms of their presence in the Earth’s crust ?

  1. Amphibolite

  2. Mica

  3. Pyroxene

Select the answer using the code given below :

  1. (a) 2, 3, 1
  2. (b) 1, 2, 3
  3. (c) 2, 1, 3Correct answer
  4. (d) 1, 3, 2

Solution.

Answer: (c) 2, 1, 3

  1. In the Earth's crust, mica makes up about 4%, amphibole about 7% and pyroxene about 10%.
  2. In ascending order: mica (2), amphibole (1), pyroxene (3).

Trap: The question prints "Amphibolite", which is a rock; it means amphibole, the mineral group.