While happens to the colour of leaf and the alcohol when leaf is boiled in alcohol during iodine test?
Answers
The leaf becomes pale or colouless. Instead tha alcohol becomes green in colour.
Answer:
To remove chlorophyll
Explanation :
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.
We boil the leaf in alcohol when we are testing it for starch because to remove the green pigment chlorophyll present in it. ... Hence to remove the green pigment present in the leaf we boil the leaf in alcohol
Alchohal is used to remove chlorophyll because it brakes the outer membrane of the leaf. It is used to remove chlorophyll, and make the leaf colourless