মূল বিষয়বস্তুতে যান

State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · প্রশ্ন 38

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

Silica and magnesium
Basalt and silica
Nickel and ferrum (iron)
Silica and aluminium
None of the above / More than one of the above

উত্তর দেখান ও ব্যাখ্যা

উত্তর: (C) Nickel and ferrum (iron)

ব্যাখ্যা

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

(A) ভুল
Wrong: that is SIMA.
(B) ভুল
Wrong: basalt is a rock, not an element.
(C) সঠিক
Correct: NIFE = Nickel + Ferrum.
(D) ভুল
Wrong: that is SIAL.
(E) ভুল
Wrong: only one of the options A–D is correct.