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प्रश्न
choose the most appropriate term to match the given description.
Heating of the ore in the absence of air to high temperature
पर्याय
Calcination
roasting
pulverization
smelting
उत्तर
Heating of the ore in the absence of air to a high temperature that is high but insufficient to melt the ore is known as calcination.
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संबंधित प्रश्न
Name two metals which are found in nature in the free state.
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Define the term ore.
What iron compound is present in haematite ore? Also write its chemical formula.
Name the metal which is extracted from haematite ore.
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
Give the principles of the hydrolytic method.
Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.
Explain the reactions of nonmetals with water with the help of examples.
