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Which reagent is used to test for the presence of starch in a food substance?

Biology
NECO 2002

Which reagent is used to test for the presence of starch in a food substance?

  • A. anhydrous copper (II) sulphate
  • B. Fehling’s solution
  • C. iodine solution
  • D. iron(III) oxide
  • E. Million’s reagent
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Correct Answer: Option C
Explanation

In the presence of starch, iodine changes its color from brown to blue-black or purple. So, iodine can be used to test the presence of starch.

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