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Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-OC-AI-0011 markL1 FoundationCalculatorComposition of air
What percentage of clean dry air is nitrogen, approximately?

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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0021 markL1 FoundationCalculatorPollutants
Carbon monoxide is produced by
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0061 markL1 FoundationCalculatorClimate change
Which two gases are greenhouse gases?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0121 markL1 FoundationCalculatorComposition of air
About what percentage of clean air is oxygen?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0031 markL2 StandardCalculatorPollutants
Carbon monoxide is toxic because it
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0041 markL2 StandardCalculatorPollutants
Which pollutant is the main cause of acid rain from coal-fired power stations?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0051 markL2 StandardCalculatorPollutants
Oxides of nitrogen are formed in car engines because
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0071 markL2 StandardCalculatorPollutants
A catalytic converter changes
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0081 markL2 StandardCalculatorClimate change
Methane is released into the atmosphere mainly from
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0091 markL2 StandardCalculatorPollutants
Flue-gas desulfurisation uses calcium oxide because
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0101 markL2 StandardCalculatorClimate change
Greenhouse gases cause warming by
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-AI-0111 markL3 ExamCalculatorClimate change
Which action would most directly reduce carbon dioxide emissions?
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Salam Academy Original Practice · Proposed mark scheme