Question : The chemical name of ''Plaster of Paris" commonly used for setting broken bones is
Option 1: Calcium nitrate
Option 2: Calcium sulphate
Option 3: Calcium carbonate
Option 4: Calcium chloride
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Correct Answer: Calcium sulphate
Solution : The correct option is calcium sulphate.
Plaster of Paris is a substance made of calcium sulphate hemihydrate. Plaster of Paris reacts chemically with water to create calcium sulphate dihydrate, which hardens over time and can be used for setting and casting broken bones.
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Question : The chemical that is used to ripen mangoes is
Option 1: calcium sulphide
Option 2: calcium carbide
Option 3: calcium carbonate
Option 4: calcium chloride
Question : Calcium salt used as fertilizer is
Option 1: Calcium Carbide
Option 2: Calcium Carbonate
Option 3: Calcium Cyanide
Option 4: Calcium Sulphate
Question : What is the chemical name of saltpetre?
Option 1: Potassium nitrate
Option 2: Potassium manganite
Option 3: Lead nitrate
Option 4: Lead sulphate
Question : What is the product of a reaction of calcium carbonate, water, and carbon dioxide?
Option 1: Calcium oxide
Option 2: Calcium hydroxide
Option 3: Hydrochloric acid
Option 4: Calcium Hydrogen Carbonate
Question : Limestone, chalk and marble are different forms of ______.
Option 1: Calcium Phosphate
Option 2: Calcium Hydroxide
Option 3: Calcium Oxide
Option 4: Calcium Carbonate
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