Question

C. What changes take place when an ore of mercury is heated in air for a long time?
Write the name of the ore of mercury and the reaction involved in this process.​

Answer 1

Answer:

When an ore of mercury is heated into air for long time,the mercury oxide is produced and by further heating,this mercury oxide becomes pure mercury metal. - In this process the ore of the mercury is cinnabar. And,by the obtained HgO of the first phase

Answer 2

1) When ore of mercury i.e. HgS  is heated in air it forms HgO

2) The name of mercury ore is Cinnabar HgS

Explanation:

Firstly HgS is heated in the presence of air and it forms HgO which is further heated to reduce into Hg