Discussion :: Chemistry
- A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?
|
A.
From brown to blue-black |
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B.
From brown to orange-red |
|
C.
From blue to pink |
|
D.
From pink to blue-green |
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Answer : Option A
Explanation :
The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black colour.
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