Series of chemical reactions occur in test.
Glucose ----------------------Acetoin.
(i) + KOH + atmospheric oxygen ---------- Diacetyl + water.
Diacetyl + guanidine + alpha Naphthol --------------(ii)
From these reactions,
a. Name the reactant marked (i) above.
b. Name the color change produced (ii)
c. What test medium was used in the test?
d. What was the source of the guanidine in the reaction?
e. Name this test?
f. What does the test detect?
g. How long does it normally take to yield a positive test after the incubation period?