A-Level ChemistryYear 2023Q21
page 08 21. The structural formulae of three antihistamine drugs are shown. N N Cl Cl N N N H O O O loratadine doxepin desloratadine Which of the following is the largest structural fragment that is common to all three molecules? N N N Cl A B C D
Paper Source:NAH_Chemistry_Section1_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)