If `Na` is heated in presence of air, it forms

What happens when a magnesium ribbon is heated in presence of air?

If diamond is strongly heated in presence of air what is produced?

Ag_(2)S ore Is mixed with NaCl and heated in the presence of air then products formed are

Silver ore dissolve in the dilute solution of NaCN in the presence of air to form:

Write chemical equations for the following reactions: Cinnabar is heated in the presence of air. Manganese dioxide is heated with aluminium powder.

A black mineral (A) on heating in presence of air gives a gas (B). (A) and (B) are respectively: