A-Level ChemistryYear 2022Q20
page 11 20. Compound X underwent elemental microanalysis and was found to contain 0.12 g of carbon and 0.02 g of hydrogen. Compound X could be: C C H H H H C C C C H H H H H H C C C H H C H H H C C H H H C H H C H H H C C H H H H H A B C D 21. The mass spectrum of an organic compound had a molecular ion peak at m/z 74. There were also peaks at 15, 31 and 43. The organic compound that produced this mass spectrum is: A CH3CH2COOH B CH3COOCH3 C CH3COCH2CH3 D CH3CH2CH2CHO [Turn over
Paper Source:NAH_Chemistry_Section1_2022.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)