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प्रश्न
The major ore of aluminium is known as:
(a) cinnabar
(b) calamine
(c) bauxite
(d) pyrolusite
उत्तर
(c) bauxite
Bauxite is one of the major ores of aluminium. Its compound is aluminium oxide (Al2O3.2H2O).
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संबंधित प्रश्न
Name the following:
The property possessed by metals by which they can be beaten into sheets.
Name one metal which is extracted by reduction with heat alone.
Name the gas produced when calamine ore is calcined.
Which metal is extracted from cinnabar ore?
Which of the following is an iron ore?
(a) cinnabar
(b) calamine
(c) haematite
(d) rock salt
A sulphide ore is converted into metal oxide by the process of:
(a) carbonation
(b) roasting
(c) calcination
(d) anodising
Name:
The allotrope of the non-metal carbon which conducts electricity.
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as ______.
What is the difference between calcination and roasting?
In extraction of copper, the flux used is ____________.
