Chemistry
Name the following :
(i) A metal which is liquid at room temperature.
(ii) A compound added to lower the fusion temp. of the electrolytic bath in the extraction of Al.
(iii) The process of heating an ore to a high temperature in the presence of air.
Metallurgy
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Answer
(i) Mercury is liquid at room temperature.
(ii) Cryolite [Na3AlF6] is added to lower the fusion temp, of the electrolytic bath in the extraction of Al
(iii) Roasting is the process of heating an ore to a high temperature in the presence of air.
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