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Course: Science — Third Preparatory
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Science — Third Preparatory

Science — Third Preparatory

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Science — Third Preparatory 2026/2027

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Unit 1 - Force, Motion, Acceleration and Physical Quantities

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Quiz

Question bank: Unit 1 — Chemical Reactions and Their Environmental Impacts

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  • Questions count: 4
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1.
When red mercury(II) oxide is heated, the gas released is:
hydrogen
carbon dioxide
oxygen
nitrogen
2.
A reaction in which one compound breaks down into two or more simpler substances is called:
combination
decomposition
single replacement
neutralisation
3.
Heating calcium carbonate gives:
calcium oxide and carbon dioxide
calcium and carbon monoxide
calcium hydroxide and water
calcium chloride and hydrogen
4.
The substance in the matchstick head that supplies oxygen is:
red phosphorus
potassium chlorate
glass powder
sulphur dioxide
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