Which metal floats when put in water?

Which of the following properties does not show metals?

Gas is produced by the reaction of steam on iron?

Which metal does not react with oxygen even at high temperature?

Which non-metal is liquid at room temperature?

The alloy of lead and tin is called?

Food is cooked in a metal utensil because it is the source of heat.

On heating copper powder in air, a layer of copper oxide accumulates on its surface. What is the color of this layer?