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Which of the following pairs of substances can be

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9.Which of the following pairs of substances can be distinguished by using acidifiedpotassium dichromate solution?A.Hex-1-ene and hept-1-eneB.Magnesium nitrate solution and calcium nitrate solutionC.Cyclohexane and cyclohexanolD.Polystyrene and polyvinyl chloride
10.Which of the following statements concerning quartz is/are correct?(1)Quartz contains delocalized electrons.(2)All atoms in quartz are held together by strong covalent bonds.(3)Quartz sublimes at high temperatures.
11.Consider the following electrolytic cells:3F5-CHEM-TOPIC 1-8 REVISION MCQ−3
Which of the following observations can be made during electrolysis?(1)The colour intensity of CuSO4(aq) decreases.(2)Colourless gas bubbles form on Rod III.(3)Rod IV becomes thicker.

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Term
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Oxide, Rod III, Rod IV

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