Biology
WAEC 2002
Using iodine solution, Biuret test, Benedict reagents and ethanol, respectively in testing for reducing
sugars, which of the following trends of colour changes would be observed?
-
A.
Blue → black → blue → brown → clear
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B.
Brown → blue → brick red → clear
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C.
Brown → violet → blue → clear
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D.
Brown → blue → violet → milky
Correct Answer: Option B
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