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NTA Abhyas JEE Main2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

Which of the following statements is incorrect?

Options

  1. ACalamine and siderite are carbonates
  2. BArgentite and cuprite are oxides
  3. CZinc blende and pyrites are sulphides.
  4. DMalachite and azurite are ores of copper

Correct answer

B. Argentite and cuprite are oxides

Step-by-step solution

A Calamine = Z n C O 3 , Sidereite = F e C O 3 B Argentite = A g 2 S and Cuprite = C u 2 O C Zinc blende = Z n S , Pyrites = F e S 2 D Malachite = C u C O 3 C u O H 2 , Azurite = 2 C u C O 3 C u O H 2

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