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2. Grapes, when tested with Benedict's reagent, gave brick red colour, whereas the iodine test didn't show any colour change.

A. What does the test results indicate about grapes?
B. Rice contains complex carbohydrates. If grapes are substituted with rice, what would be the test result?​

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Rice would not show any negative test with Benedicts solution but will show  blue black color with iodine.

What is the Benedicts solution?

The Benedicts solution is used to test for the presence of reducing sugars in a solution. The brick red color is a positive test for reducing sugars such as glucose.

Owing to the fact that grape does not have starch, it shows a negative test for starch. Rice would not show any negative test with Benedicts solution but will show  blue black color with iodine.

Learn more about Benedicts solution:https://brainly.com/question/14731281?

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