Get premium membership and access revision papers with marking schemes, video lessons and live classes.
Processing. Please wait.

 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.
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

 (2m 28s)
394 Views     SHARE

Download as pdf file

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