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प्रश्न
Choose the correct answer from the options given below:
The main ore used for the extraction of iron is
A. Haematite
B. Calamine
C. Bauxite
D. Cryolite
उत्तर
Haematite
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संबंधित प्रश्न
Select the process from the following which matches the given description.
(calcination, roasting, pulverisation, smelting)
Crushing of the ore into a fine powder.
Define the term : Charge
Name the process of concentration
(a) Based on densities
(b) Based on magnetic nature.
Complete and balance the following equation:
Al + KOH + H2O →
Complete and balance the following equation:
Fe2O3 + → Al2O3 +
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 ore of zinc containing its sulphide.
Write the equation for the reaction of zinc with following: Sodium hydroxide solution
Write the equation for the reaction of zinc with following: Dilute sulphuric acid
The metals zinc and tin are present in the alloy
