WBCS.LIVE practice question

Which chemical is used to test the presence of Starch in food?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Copper Sulphate
  2. Caustic Soda
  3. Iodine Solution
  4. Benedict's Solution

Correct answer and explanation

Correct answer: Iodine Solution

Explanation: āœ… Correct Answer: (C) Iodine Solution šŸ“š Explanation: The Iodine test is a standard chemical test used to determine the presence of starch. When a few drops of dilute iodine solution are added to a food sample containing starch, it turns a characteristic blue-black color. This color change occurs because iodine atoms get trapped within the helical structure of amylose, a component of starch. Benedict's solution is used for testing reducing sugars, not starch.