Assertion- Reasoning type questions 9. Assertion : When ferrous sulphate crystals are heated strongly, its colour changes from green to

Assertion- Reasoning type questions

9. Assertion : When ferrous sulphate crystals are heated strongly, its colour changes from green to brown. Reason : It undergoes displacement reaction.10. Assertion : Respiration is an endothermic reaction. Reason: Endothermic process absorbs energy.11. Assertion: Brown fumes are produced when lead nitrate is heated. Reason: Oxygen gas is produced due to the decomposition of lead nitrate.12. Assertion: Calcium carbonate when heated gives calcium oxide and water. Reason: On heating calcium carbonate, decomposition reaction takes place. 13. Assertion: In a reaction of magnesium with oxygen, magnesium serves as a reducing agent Reason: The substance which gains oxygen in a chemical reaction is a reducing agent.Assertion: Rusting of iron is a chemical change. Reason: The chemical properties of hydrated Fe2O3 are different from iron and oxygen​

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