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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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2730 questions · page 61 of 137 · choose a topic above to narrow them down

SA-OC-CO-0031 markL1 FoundationCalculatorPreventing rust
Which is a barrier method?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-DF-0011 markL1 FoundationCalculatorDiffusion
Diffusion is the net movement of particles
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-DF-0021 markL1 FoundationCalculatorRate of diffusion
Which gas diffuses fastest at the same temperature?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-DF-0031 markL1 FoundationCalculatorDiffusion
Diffusion is fastest in
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-DF-0051 markL1 FoundationCalculatorRate of diffusion
Raising the temperature makes diffusion
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EL-0011 markL1 FoundationCalculatorMolten electrolytes
In the electrolysis of molten lead(II) bromide, lead forms at the
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EL-0021 markL1 FoundationCalculatorMolten electrolytes
Solid sodium chloride cannot be electrolysed because
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EM-0011 markL1 FoundationCalculatorDefinitions
Which is an element?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EM-0021 markL1 FoundationCalculatorDefinitions
Which is a mixture?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EM-0031 markL1 FoundationCalculatorDefinitions
A compound contains
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EM-0041 markL1 FoundationCalculatorDefinitions
How many different elements are in CaCO3\mathrm{CaCO_3}?

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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EM-0051 markL1 FoundationCalculatorDefinitions
How many atoms are in one formula unit of CaCO3\mathrm{CaCO_3}?

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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EN-0011 markL1 FoundationCalculatorExo and endo
In an exothermic reaction, the temperature of the surroundings
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EN-0021 markL1 FoundationCalculatorExo and endo
Which is endothermic?
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EN-0031 markL1 FoundationCalculatorExo and endo
For an exothermic reaction, ΔH\Delta H is
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EQ-0011 markL1 FoundationCalculatorEquilibrium
At dynamic equilibrium
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EQ-0021 markL1 FoundationCalculatorEquilibrium
Anhydrous copper(II) sulfate turns blue when
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EX-0011 markL1 FoundationCalculatorExtraction method
Aluminium is extracted by
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-EX-0021 markL1 FoundationCalculatorExtraction method
Iron is extracted by
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Salam Academy Original Practice · Proposed mark scheme
SA-OC-FA-0011 markL1 FoundationCalculatorCrude oil
The main constituent of natural gas is
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Salam Academy Original Practice · Proposed mark scheme