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CBSE
Class 12 Chemistry
General Principals And Process Of Isolation Of Elements Chapter 6
Quiz 1
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Cryolite is the chief ore of
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Aluminium correct
0%
Zinc
0%
Iron
0%
Copper
Composition of Siderite is
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Fe3O4
0%
FeCO3
0%
Fe2O3
0%
FeS2
Calamine is the ore of
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Aluminium
0%
Iron
0%
Copper
0%
Zinc
Malachite is an ore of:
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Copper
0%
Magnesium
0%
Calcium
0%
Both magnesium and calcium
When a metal is to be extracted from its ore and if the gangue associated with the ore is silica ,then
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Both acidic and basic fluxes are used
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Neither of them is needed.
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An acidic flux is used
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A basic flux is used
Roasting is done generally in case of the
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Silicate ores
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Sulphide ores
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Oxide ores
0%
Carbonate ores
The metal always found in free state is
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Sodium
0%
Copper
0%
Gold
0%
Silver
Bauxite is the chief ore of:
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Iron
0%
Zinc
0%
Copper
0%
Aluminium
Dolomite is a mineral of
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Aluminium
0%
Magnesium
0%
Calcium
0%
Both magnesium and Calcium
Pyrolusite is a/an
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Not an ore
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Oxide ore
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Sulphide ore
0%
Carbide ore
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