Question : What is the chemical name of saltpetre?Option 1: Potassium nitrateOption 2: Potassium manganiteOption 3: Lead nitrateOption 4: Lead sulphate

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Question : What is the chemical name of saltpetre?
Option 1: Potassium nitrate
Option 2: Potassium manganite
Option 3: Lead nitrate
Option 4: Lead sulphate

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Correct Answer: Potassium nitrate

Solution : The correct option is Potassium nitrate .

Its chemical formula is KNO _3. Saltpetre is a naturally occurring mineral historically used for various purposes, including as a component of gunpowder, fertiliser, and food preservation.

Physical Properties:

Potassium nitrate is a colourless and odourless crystalline salt.
It is soluble in water.
It has a high melting point of about 334 degrees Celsius (633.2 degrees Fahrenheit).

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