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NTA Abhyas JEE Main2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

Which is incorrect statements among the following?

Options

  1. AZinc blende and Galena are sulphides
  2. BArgentite and cuprite are oxides
  3. CCalamine and siderite are carbonates
  4. DMalachite and azurite are ores of copper

Correct answer

B. Argentite and cuprite are oxides

Step-by-step solution

An oxide is a a binary compound of oxygen with another element or group. Chemical formula for cuprite is Cu 2 O and chemical formula of argentite is Ag 2 S . Therefore, Argenite is not an oxide. Cuprite is an oxide mineral. Therefore, given statement is incorrect.

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