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1.
Which pair of elements can form alloy?
2.
Which ore can be best concentrated by froth floatation process?
3.
The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminium metal from bauxite by the hall process is
(Atomic mass of Al=27)
(Atomic mass of Al=27)
4.
Carbon monoxide reduction process is used for the extraction of:
5.
Load stone is one ore of
6.
One of the following metals forms a volatile compound and this property is taken advantage for its extraction. This metals is
7.
Carbon reduction is used for the extraction of:
8.
The phenomenon in which white transparent crystal changes into white powder is known as:
9.
Which is used for the extraction of cadmium from cadmium sulphide?
10.
Formula of magnetite is