O level chemistry topical past papers and answers

O/N 03/P1/Q2 A gas, X, is less dense than air and insoluble in water. Which method cannot be used to collect the gas? A C B D Classified O-Level Chemistry Paper-1 9 1.2 Methods of Purification and Analysis 1.2 Methods of Purification and Analysis 18. O/N 16/P11/Q3 A paper chromatography experiment is carried out to find an Rf value for Fe3+(aq). ................
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