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Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsRoasting and Calcination
Medium

Which of the following sulphides,when heated strongly in air,gives the corresponding metal?

  • A
    $Cu_2S$
  • B
    $CuS$
  • C
    $Fe_2S_3$
  • D
    $HgS$
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Class 12 Questions

Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Roasting and Calcination

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$(III)$ Flux $c. SiO_2 + FeO \rightarrow FeSiO_3$
$(IV)$ Thermite $d. Cr_2O_3 + 2Al \rightarrow Al_2O_3 + 2Cr$

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