Question

To test the presence of starch, why is leaf boiled with spirit?
1) To kill the leaf
2) To dissolve chlorophyll
3) To remove starch
4) To remove protein

Answer 1

Answer:

(2)

Explanation:

We boil the leaf in alcohol when we are testing it for starch because to remove the green pigment chlorophyll present in it. For the starch test, we need to observe the colour change from brown to blue when iodine is put on the leaf.

Answer 2

Explanation:

We boil the leaf in alcohol when we are testing it for starch because to remove the green pigment chlorophyll present in it. For the starch test, we need to observe the colour change from brown to blue when iodine is put on the leaf.

option 2 to dissolve chlorophyll .