Question

write two precautions that must be taken while studying the decomposition reaction,when the ferrous sulphate crystal are heated in a boiling tube.​

Answer 1

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1.) keep your nose away from the gas like SO2 , which is suffocative.

2.) use test tube holder to heat the test tube.

Answer 2

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Precautions: Do not point the mouth of the boiling tube at your neighbours or yourself. Waft gases emitted from ferrous sulphate on heating gently towards your nose holding the test tube at a distance. The gases SO2 and SO3 are very harmful, so do not take a deep breath when smelling the odour of the gases.