Which substance is used to remove chloropyll from a green leaf during photosynthesis experiments ?

Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?

Starch in a green leaf after photosynthesis

In green plants, during photosynthesis water act as:

In green plants, during photosynthesis water act as:

Molecules from which oxygen evolves during photosynthesis.

A substance used to remove excess of chlorine.

Out of the following figures, choose the one showing the correct procedure for removing chlorophyll from the leaf in the experiment 'light is necessary for photosynthesis': The correct procedure is: