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Take 1 ml of starch solution in two test tubes A and B. Add 1ml saliva to the test tube A and leave both test tubes undisturbed for 20 to 30 minutes now

add a few drops of delute iodine solution to the test tubes. In which test tube you will observe a colour change. what does this tell about the action of the saliva on the starch


9in test tube A we will observe change in color. this is due to presence of starch.
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