How will you prepare
a) A mixture of iron filings and sulphur
b) A compound formed by iron and sulphur
In the formation of iron sulphide, by heating iron and sulphur, the mass of iron(II) sulphide __________ when compared with a total mass of iron and sulphur.
When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is :
(a) released (b) first absorbed and then released
(c) absorbed (d) neither absorbed nor released