Which of the tubes to the right is a positive test for starch and which is a negative?

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asked Nov 16, 2019 146k views

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Linus Odenring · Answer 1 · 2019-11-22T16:48:32+0000

Corn starch was used for the positive control and distilled water was used for the negative control. Compare your tube to the following image of the positive and negative controls.

Which of the tubes to the right is a positive test for starch and which is a negative?

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