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Chemical industries
9 Class 10 Chemistry questions with answers and explanations.
Printable worksheet with answer key
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Urea is mainly used as a:
- 1 Fertiliser
- 2 Dye
- 3 Explosive
- 4 Fuel
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The Solvay process is used to manufacture:
- 1 Sodium carbonate
- 2 Ammonia
- 3 Urea
- 4 Sulphuric acid
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Correct answer: Sodium carbonate
Sodium carbonate (soda ash) is made by the Solvay process.
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Sulphuric acid is made industrially by the:
- 1 Cracking
- 2 Solvay process
- 3 Contact process
- 4 Haber process
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Correct answer: Contact process
The contact process uses a vanadium oxide catalyst.
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Crude petroleum is separated into fractions by:
- 1 Crystallisation
- 2 Filtration
- 3 Fractional distillation
- 4 Electrolysis
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Correct answer: Fractional distillation
The fractions have different boiling points.
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Cement is made by heating limestone with:
- 1 Salt
- 2 Sugar
- 3 Clay
- 4 Coal tar
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Correct answer: Clay
Limestone and clay are heated in a kiln and ground to make cement.
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Ammonia is mainly used to make:
- 1 Plastics only
- 2 Glass only
- 3 Fertilisers
- 4 Bricks
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Correct answer: Fertilisers
A large share of ammonia goes into fertilisers.
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The raw material for making glass is mainly:
- 1 Sand
- 2 Salt
- 3 Coal
- 4 Clay
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Which of these is a fossil fuel?
- 1 Wood
- 2 Coal
- 3 Wind
- 4 Sunlight
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Natural gas is mainly used as a:
- 1 Fertiliser only
- 2 Medicine
- 3 Colour
- 4 Fuel