Question

all the items which float on water

Answer 1

Anything that is less dense than water will float on water 
1) wood 
2) charcoal 
3)  balloons ... :)
ETC.....
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HOPE THIS IS THE CORRECT ANSWER

Answer 2

The objects which are able to displace water equal to its weight floats on water.
Example: Ships, Icebergs, Human body, Submarines etc.