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 Form 1 Chemistry Sample Exam Revision Questions With Answers

During the Olympics, urine samples of five short-distance runners (1, 2, 3, 4 and 5) were taken and tested for the presence of two illegal steroids A and B by paper chromatography. Methanol was used as the solvent. A chromatogram from the test appeared as shown below. Study the chromatogram and answer the questions that follow.
3820211510.png
a).Which of the two steroids is most likely to be more-soluble in methanol. Give a reason.
b).Identify the athletes that tested positive for the illegal steroids.
Athlete 3
Athletes 5

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Answer Text:
a).Steroid B, Reason being it was carried further than steroid A.
b).Athlete 3
Athlete 5


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