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Question
Ben was doing an experiment and added a solution to food containing starch and saw a blue-black colouration. What solution do you think he added?
Ben was doing an experiment and added a solution to food containing starch and saw a blue-black colouration. What solution do you think he added?
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Solution
The correct option is B Iodine solution
Dilute iodine solution is used to test the presence of starch in a food item. When iodine is added to a solution or directly on to a food item such as potato, bread, rice, etc., the food item turns blue-black, indicating the presence of starch.
Dilute iodine solution is used to test the presence of starch in a food item. When iodine is added to a solution or directly on to a food item such as potato, bread, rice, etc., the food item turns blue-black, indicating the presence of starch.
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We have two test tubes here, X and Y. X contains boiled rice and Y contains boiled rice that has been completely chewed on. Which one is more likely to turn blue-black on adding an iodine solution?
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