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Q55
(CISF/2017)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Which one of the following materials is not present in gun powder ?
Result
Your answer:
—
·
Correct:
D
Explanation
Gunpowder, also known as black powder, is a chemical explosive consisting of a mixture of three specific components: potassium nitrate (KNO3, also called saltpeter), charcoal (carbon), and sulphur. In this mixture, potassium nitrate acts as the oxidizer, while charcoal and sulphur serve as the fuel. Barium sulphate (BaSO4) is not a component of gunpowder. It is commonly used as a radiocontrast agent for medical imaging (X-rays) or as a pigment in paints and plastics. Therefore, option D is the correct answer.
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