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प्रश्न
Name the gas produced when calamine ore is calcined.
उत्तर
Carbon dioxide CO2 gas is produced when calamine ore is calcined.
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संबंधित प्रश्न
Name one metal which is extracted by electrolytic reduction.
Name the method by which aluminium metal is extracted.
Which metal is extracted from calamine ore?
Which of the following metals are extracted by the electrolysis of their molten chlorides?
(a) Na and Hg
(b) Hg and Mg
(c) Na and Mg
(d) Cu and Fe
Give reasons, why aluminum is used in:
In aluminiothermy
Name the ore of mercury. With the help of balanced chemical equations, explain the process of extraction of mercury from its ore.
How many valence electrons are present in metals ?
Name the following:
The process of heating an ore to a high temperature in the presence of air.
State the property of the metal being utilized in the following :
| Use of metal | Property |
| Zinc in Galvanization | |
| Aluminium in Thermite welding |
Explain the following reaction with the balanced equation.
Dry aluminium hydroxide is ignited at 1000 °C
