58.In India, the steel production industry requires the
import of
- a) saltpetre
- b) rock phosphate
- c) coking coal
- d) All of the above
The correct answer is coking coal.
- Saltpetre (Potassium nitrate)
- Potassium nitrate, sometimes known as saltpetre, is not utilised in the manufacture of steel.
- It’s used to make fertiliser, clear tree stumps, rocket propellant, and fireworks.
- It has been used as a food preservative since the Middle Ages and is one of the main components of gunpowder (often known as “black powder”).
- Unlike steel production, the production of fertiliser uses rock phosphate.
- India imports coking coal. Hence Option 3 is Correct.
- One tonne of steel requires the production of 0.8 tonnes of coking coal.
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