Question

Which among the following objects will not float on water?

• A. A metal key
• B. A sheet of paper
• C. A leaf
• D. A wooden cork

Answer 1

The correct option is A A metal key

Objects which are denser than water will sink in it. A metallic key is denser than water. It will sink in it.
A sheet of paper, leaf and wooden cork are less dense than water. Hence, they will float on it.