List all items known to you that float on water. Check and see if they will float on oil or kerosene.
Some items that float on water are listed below:
1. Plastic bottle
2. Piece of paper
3. Piece of sponge
4. Piece of thermocol
5. Wood
6. Bamboo
7. Plastic ball
8. Cork
However, none of these items floats on oil or kerosene.