Salam Academy
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-AC-CR-0011 markL1 FoundationCalculatorTLC
A spot travels 3.2 cm and the solvent front 8.0 cm. Calculate RfR_f.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0121 markL1 FoundationCalculatorPrinciples
The phase that doesn't move in chromatography is the
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0021 markL2 StandardCalculatorPrinciples
In GC, the mobile phase is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0031 markL2 StandardCalculatorTLC
Amino acid spots on a TLC plate are located using
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0041 markL2 StandardCalculatorGC
In GC, the relative amount of each component is found from
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0052 marksL2 StandardCalculatorGC
GC peak areas: A 30, B 90, C 80 units. Calculate the % of B (assume equal detector response).

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0061 markL2 StandardCalculatorGC
A compound with a short retention time in GC is likely to
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0071 markL2 StandardCalculatorPrinciples
TLC separates mainly by
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0081 markL2 StandardCalculatorGC
GC–MS is more useful than GC alone because
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0091 markL2 StandardCalculatorTLC
The TLC baseline is drawn in pencil because
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0112 marksL2 StandardCalculatorTLC
A compound has Rf=0.65R_f=0.65. The solvent front moved 6.0 cm. How far (cm) did the spot move?

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-CR-0101 markL3 ExamCalculatorPrinciples
In TLC with silica (polar), a polar compound will have
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Salam Academy Original Practice · Proposed mark scheme