Question

a green coloured hydrated metallic salt on heating looses its water crytallistion molecules and gives a suffocoating smell .identity the salt and write chemical equation science based question

Answer 1

The salt is ferrous sulphate.
When ferrous sulphate is burnt ferric oxide, sulphur dioxide ,sulphur trioxide are formed.
The suffocating smell is produced due to the formation of sulphur dioxide .
2FeSO4 = Fe2O3 +SO2+ SO3