Metals and Non-...

Which of the following products is/are formed when cinnabar is heated in air?

Metals such as sodium, magnesium and calcium are obtained by electrolysis of which of the following compounds of these metals?

Ores mined from the earth are usually contaminated with large amount of impurities known as 

Which of the following metals has lesser affinity for oxygen than carbon?

In the electrolytic reduction of aluminium, which of the following is taken as an electrolyte?

After electrolytic refining of a metal, where can we get pure metal in the apparatus?

Which of the following statements is not true? 

During the electrolytic refining of a metal, cathode is made up of 

The oxide of which of the following metals can be reduced to the corresponding metal by heating only?

Which of the following metals is never found in nature as a free element?