Among the following statements the incorrect one isa)calamine and side...
Argentite (Ag2S) is sulphide and cuprite are oxides.
View all questions of this test
Among the following statements the incorrect one isa)calamine and side...
Incorrect Statement:
Option B: Argentite and cuprite are oxides.
Explanation:
Argentite and cuprite are not oxides, but rather sulfides and oxide respectively.
- Argentite (Ag2S) is a sulfide mineral of silver, containing silver and sulfur. It is an important ore of silver.
- Cuprite (Cu2O) is an oxide mineral of copper, consisting of copper and oxygen. It is also known as red copper ore.
Correct Statements:
Option A: Calamine and siderite are carbonates.
- Calamine (ZnCO3) is a carbonate mineral of zinc, containing zinc, carbon, and oxygen. It is an important source of zinc.
- Siderite (FeCO3) is a carbonate mineral of iron, containing iron, carbon, and oxygen. It is an important source of iron.
Option C: Zinc blende and iron pyrites are sulphides.
- Zinc blende (ZnS) is a sulfide mineral of zinc, containing zinc and sulfur. It is the primary ore of zinc.
- Iron pyrites (FeS2) is a sulfide mineral of iron, containing iron and sulfur. It is commonly known as "fool's gold."
Option D: Malachite and azurite are ores of copper.
- Malachite (Cu2(CO3)(OH)2) is a carbonate mineral of copper, containing copper, carbon, oxygen, and hydrogen. It is a secondary mineral formed from the weathering of primary copper ores.
- Azurite (Cu3(CO3)2(OH)2) is also a carbonate mineral of copper, containing copper, carbon, oxygen, and hydrogen. It is a secondary mineral formed from the oxidation of copper ores.
Therefore, the incorrect statement is Option B: Argentite and cuprite are oxides.