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State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · Question 38

The Earth's inner layer NIFE is rich in which elements?

  1. Silica and magnesium
  2. Basalt and silica
  3. Nickel and ferrum (iron)
  4. Silica and aluminium
  5. None of the above / More than one of the above
Show answer & explanation

Answer: (C) Nickel and ferrum (iron)

Explanation

Suess's layers: SIAL (crust), SIMA (mantle), NIFE (core of nickel and iron).

  • (A) Incorrect

    Wrong: that is SIMA.

  • (B) Incorrect

    Wrong: basalt is a rock, not an element.

  • (C) Correct

    Correct: NIFE = Nickel + Ferrum.

  • (D) Incorrect

    Wrong: that is SIAL.

  • (E) Incorrect

    Wrong: only one of the options A–D is correct.