A white precipitate is a positive result with this test used to detect the presence of alkaloids.
A) Dillie-Koppanyi
B) Scott
C) Duquenois-Levine
D) Marquis
E) Mayer's

Question

Quizplus · Accepted Answer

Mayer's reagent is used to detect the presence of alkaloids and a white precipitate is a positive result. The other reagents listed may also be used in drug testing but do not produce a white precipitate with alkaloids.

A White Precipitate Is a Positive Result with This Test