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29 July, 13:33

In the Marquis Color Test, the solution will turn what color in the presence of opiates?

Blue

Green

Yellow

Purple

+2
Answers (1)
  1. 29 July, 15:45
    0
    Answer is: purple.

    Marquis Color Test is used as a simple test to identify alkaloids. Marquis reagent is mixture of formaldehyde and concentrated sulfuric acid, Different compounds produce different color. For example opium gives brown color, LSD black, amphetamine orange
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