What is the mixture of sulphur, charcoal and potassium nitrate called?
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Gun powder
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Cement
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Glass
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None of these
A
Correct answer
Explanation
Gunpowder (black powder) is a historical explosive mixture composed of sulfur (S), charcoal (C), and potassium nitrate (KNO3) in specific ratios. This composition has been used for centuries in firearms and fireworks. Cement is made from limestone and clay, while glass is primarily silica-based.