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प्रश्न
Define the term : Ore
उत्तर
Ore: Those minerals from which a metal can be extracted profitably are called ores.
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संबंधित प्रश्न
State the main components of the following alloys:
Duralumin
From the metals: copper, iron, magnesium, sodium, and zinc, select a different metal in the case which does not react with dilute hydrochloric acid.
Identify the pairs of metals and their ores from the following.
| Group A | Group B |
| a. Bauxite | i. Mercury |
| b. Cassiterite | ii. Aluminium |
| c. Cinnabar | iii. Tin |
Name the following :
Ore of iron referred to as "fool's gold".
Name one metal occurring as a : Carbonate ore
Give composition and uses of the following alloys. Mention the reason for its use.
Brass
Explain the following:
Stainless steel is more useful than steel.
The two main metals in bronze are
Bauxite : Aluminium ore : : Cassiterite : _______
The ore which can be concentrated by magnetic separation.
