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?

By: |Published on: May 16|Categories: Biology WAEC| 0 comments

A. Blue → black → blue → brown → clear
B. Brown → blue → brick red → clear
C. Brown → violet → blue → clear
D. Brown → blue → violet → milky

Correct Answer: Option C

B. Brown → blue → brick red → clear

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