Biology > 2002 > 33
WASSCE
using iodine solution, biuret test, benedict reagents and ethanol, respectively in testing for reducing sugar, which of the following trend of colour changes would be observed?
A.
blue-black→blue→brown→clear
B.
brown→blue→brick red→ clear
C.
brown →violet→blue→clear
D.
brown→blue→violet→milky
Answer: C
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