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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.
2Mg + O₂ → 2MgO is an example of a:
decomposition reaction
direct combination reaction
double replacement reaction
neutralisation reaction
2.
The product of burning steel wool in air is mainly:
FeO
Fe₃O₄
Fe(OH)₃
FeCl₂
3.
Which metal forms a black layer of oxide on its surface when heated in a Bunsen flame without burning with a visible flame?
Magnesium
Iron
Copper
Sodium
4.
In Mg + Br₂ → MgBr₂, bromine is:
oxidised and an oxidising agent
reduced and an oxidising agent
reduced and a reducing agent
oxidised and a reducing agent
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