A-Level ChemistryYear 2023Q16
page 10 16. A chemist analysed a mixture of four dyes, A, B, C and D, using gas-liquid chromatography. The time taken to travel through the column (retention time) depends on the polarity of the molecule. The more polar the molecule the longer the retention time. The following chromatogram was obtained. concentration Z increasing retention time Which of the following compounds corresponds to peak Z? O O OH O OH OH HO O HO OH O O OH HO OH O OH HO O D C B A Structure Dye
Paper Source:NH_Chemistry_Paper1-Multiple-choice_2023.pdf
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Exam Specification Info
This question is part of the UK A-Level Chemistry syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectChemistry
Official MarksVariable (2–6 marks)