27. Which chemical is needed for the
starch test?
(a) Glycerine
a
(b) Chlorine
b
(e) lodine
(d) All of these
(
Answers
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Answer:
e. Iodine....is the correct answer
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iodine solution
This is a physical test. A chemical test for starch is to add iodine solution (yellow/brown) and look for a colour change. In the presence of starch, iodine turns a blue/black colour. It is possible to distinguish starch from glucose (and other carbohydrates) using this iodine solution test.
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