Aim:
To confirm the presence of vitamin C in lemon.
What you need:
1) Lemon,
2) Iodine solution,
3) Piece of white paper,
4) Knife,
5) Dropper.
How to do:
Slice a citrus fruit. Place two or three drops of iodine solution on a piece of paper. Keep the cut side of the slice on the paper. Leave it for 15 minutes and observe. If vitamin C is present, the portion of the paper under the slice will get discoloured.
What you see :
The colour of paper under the lemon slice (discoloured)
What you learn :
Vitamin C is in lemon. (present)
