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Miracle Learning Centre Chemistry Tuition Question on Redox Reactions. (O Level Chemistry Tuition/ IP Chemistry Tuition)

1. The exhaled breath of diabetics contains propanol. A medical student wishes to test for diabetes by asking patients to bubble their breath through a reagent. Which reagent could be used? A aqueous bromine B acidified potassium dichromate (VI) solution C universal indicator D aqueous potassium iodide

2. In the following reaction: MnO2 + 4HCl  MnCl2 + 2H2O + Cl2 The substance HCl is reacting as A a catalyst. B a dehydrating agent. C an oxidising agent. D a reducing agent.

3. In which of the following is the oxidation number (oxidation state) of chromium greater than that of manganese? A K2Cr2O7 MnO4 B Cr2O3 MnO2 C K2CrO4 KMnO4 D Cr2(SO4)3 MnSO4 Miracle Learning Centre Answer to Chemistry Tuition Question on Redox Reactions. (O Level Chemistry Tuition/ IP Chemistry Tuition) 1.B 2.C 3.D Learn from our Chemistry Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Chemistry tuition, Physics tuition, Maths tuition and Science tuition Classes.