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Ocr a level chemistry paper 2 2023 question paper
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2 © OCR 2023 Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which compound is used for proton exchange in NMR spect... roscopy? A CCl 4 B CDCl 3 C D 2O D Si(CH3)4 Your answer [1] 2 Which compound reacts with 2,4-dinitrophenylhydrazine but does not react with Tollens’ reagent? A C 6H5COCOOH B C 6H5CH(OH)CHO C CH 3COCHO D CH 3CH2CH(OH)CH3 Your answer [1] 3 Propyne, CH3C≡CH, is a member of the alkynes homologous series with the C≡C functional group. What is the general formula of the alkynes? A C nH2n–4 B C nH2n–2 C C nH2n D C nH2n+2 Your answer [1]3 © OCR 2023 Turn over 4 The structure of the painkiller paracetamol is shown below. OH O NH Paracetamol Which functional groups are present in paracetamol? A alcohol, amide B alcohol, arene, ketone, amine C phenol, amide [Show More]
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