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NTA Abhyas NEET2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

The reaction that does not define calcination is

Options

  1. AZ n C O 3 → Δ Z n O + C O 2
  2. BF e 2 O 3 . X H 2 O → Δ F e 2 O 3 + X H 2 O
  3. CC a C O 3 . M g C O 3 → Δ C a O + M g O + 2 C O 2
  4. D2 C u 2 S + 3 O 2 → Δ 2 C u 2 O + 2 S O 2

Correct answer

D. 2 C u 2 S + 3 O 2 → Δ 2 C u 2 O + 2 S O 2

Step-by-step solution

Calcination is a process in which ore is heated mainly in the absence of air whereas roasting is a process in which ore is heated in the presence of air. 2 C u 2 S + 3 O 2 → Δ 2 C u 2 O + 2 S O 2 ( R o a s t i n g )

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