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Photosynthesis Experiments

Which of the ...

Question

Which of the following solution changes its colour to blue-black in presence of starch?

A

Lime water

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B

Iodine solution

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C

Methylated solution

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D

Benedict's solution

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Solution

The correct option is B
Iodine solution

Dilute iodine solution is used to test starch. Add Iodine (KI) reagent to a solution or directly on a potato or other materials such as bread, crackers, or flour. A blue-black colour results if starch is present.

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