Chemistry PYQ 97 of 152 · Everyday Chemistry

The metallurgical process in which a metal is obtained in a fused state is called

  1. Aroasting
  2. Bcalcination
  3. Cfroth floatation
  4. Dsmelting
  5. ENone of the above/More than one of the above

67th BPSC

Show answer and explanation

Correct answer: (d) smelting

Explanation

Smelting extracts a metal from its ore by heating with a reducing agent like coke (carbon), leaving the metal in a fused (molten) state.

Roasting heats sulphide ore in excess air, and calcination heats carbonate ore in limited air to drive off volatiles.

Froth flotation is only an ore-concentration step, not metal extraction.

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