Question
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:
NDA
General Ability
General Studies
2025
NDA 2025 (Phase 1)
NDA General Ability Question (2025) — Solution
Options
- A. 2, 3, 1
- B. 1, 2, 3
- C. 2, 1, 3
- D. 1, 3, 2
Answer
C. 2, 1, 3
Step-by-step solution
According to the mineral composition of the Earth's crust: Mica constitutes about 4\% of the Earth's crust. Amphibole constitutes about 7\% of the Earth's crust. Pyroxene constitutes about 10\% of the Earth's crust. The correct ascending order of their presence in the Earth's crust is Mica, Amphibole, and Pyroxene. This corresponds to the sequence 2, 1, 3. Answer: 2, 1, 3
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