Chemistry, 10.05.2021 14:00, jessysmith9678
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
​
Answers: 3
Chemistry, 23.06.2019 00:30, mariaramirez110379
On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density
Answers: 1
Assertion- Reasoning type questions
9. Assertion : When ferrous sulphate crystals are heated stron...
English, 23.07.2021 21:40