State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · வினா 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
விடையைக் காட்டு & விளக்கம்

விடை: (C) Nickel and ferrum (iron)

விளக்கம்

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

  • (A) தவறு

    Wrong: that is SIMA.

  • (B) தவறு

    Wrong: basalt is a rock, not an element.

  • (C) சரி

    Correct: NIFE = Nickel + Ferrum.

  • (D) தவறு

    Wrong: that is SIAL.

  • (E) தவறு

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