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प्रश्न
The main ore used for the extraction of iron is ______.
विकल्प
Haematite
Calamine
Bauxite
Cryolite
उत्तर
The main ore used for the extraction of iron is haematite.
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संबंधित प्रश्न
State the main components of the following alloys:
Brass
Name an ore of zinc.
Explain the following:
Zinc is used to cover iron so as to prevent rusting of iron. Why?
Explain
Nitric acid can be stored in aluminium containers
Name the following :
Ore of iron referred to as "fool's gold".
Name the following:
Two metals which occur in nature in free state as well as in combined state.
Name one metal occurring as a : Carbonate ore
The following question refer to the extraction of aluminium and iron from their ores:
Iron and aluminum ores both, contain impurities. Explain briefly how these impurities are removed in each case.
Name the main constituent metal in the following alloy:
Brass
Which of the following statements are correct?
(i) A depressant prevents certain type of particle to come to the froth.
(ii) Copper matte contains \[\ce{Cu2S}\] and \[\ce{ZnS}\].
(iii) The solidified copper obtained from reverberatory furnace has blistered appearance due to evolution of \[\ce{SO2}\] during the extraction.
(iv) Zinc can be extracted by self-reduction.
