Question

WHY IS THERE A NEED TO BOIL THE LEAF IN WATER AND THEN IN ALCOHOL .


question from CLASS X BIOLOGY CHAPTER 6 ACTIVITY 6.1​

Answer 1

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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.

Answer 2

Answer:

Direct boiling in alcohol will burn the leaf.

That's why steam of water is used to boil the alcohol.