A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air. Identify the metal and its ore and give the reaction involved.

Metals low in activity series can be obtained by reducing their sulphides or oxides by heating. At room temperature, mercury is the only metal that exists as a liquid. It can be made by heating cinnabar (HgS), a mercury sulphide ore.

Mercury is the metal which is liquid at room temperature. Ore of Mercury is Cinnabar. When we heat cinnabar in atmospheric oxygen following reaction takes place.

2HgS + 3O2→ 2HgO + 2SO2

Mercuric oxide is again heated to get Mercury and Oxygen

2HgO $$\overset{heat}{\rightarrow}$$ Hg+O2