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To test the presence of starch …

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To test the presence of starch by iodine the green leaf is first boiled in alcohol to show Dash
  • 1 answers

Meghna Thapar 5 years, 7 months ago

The hot water kills the leaf and the alcohol breaks down the chlorophyll, taking the green color out of the leaf. When you put iodine on the leaves, one of them will turn blue-black and the other will be a reddish-brown. Iodine is an indicator that turns blue-black in the presence of starch.

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