Question

Pls answer
A leaf was taken out from a potted plant kept in a dark room for few
weeks. The leaf was placed in a test tube containing alcohol. Then the
test tube was put in a beaker filled with water and heated. Which among
the following will be the correct observation?

(a) The colour of the leaf changes to blue-black.
(b) The leaf appears colourless.
(c) The leaf retains the green colour.
(d) The colour of the leaf changes to brick-red.

Answer 1

Answer:

Blue-Black

Explanation:

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 when we are testing it for starch.