2013 HCI H2 Biology Prelims Paper 1 Questions

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3 © Hwa Chong Institution 2013 9648 H2 Biology / JC2 Preliminary Examination / Paper 1 3 The table shows the results of food tests carried out to identify two types of biomolecules. test-tube reagent added to test-tube sodium hydroxide + copper sulphate Benedict's solution iodine in potassium iodide X purple brick red brown Y