BPSC – Combined Competitive Examination · প্রশ্ন 94
The metallurgical process in which the metal is obtained in a molten (fused) state is called:
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (D) Smelting
ব্যাখ্যা
In smelting (e.g. iron in a blast furnace), the metal is reduced and collected in molten form.
- (A) ভুল
Wrong: heating ore in air below melting point.
- (B) ভুল
Wrong: heating in limited/no air to remove volatiles.
- (C) ভুল
Wrong: a concentration method for sulphide ores.
- (D) সঠিক
Correct: smelting reduces the ore at high temperature, giving molten metal.
- (E) ভুল
Wrong: only one of the options A–D is correct.