_________________ is a highly reactive metal, even then it can be used to make utensils for cooking.

Arsenic is a

Corrosion of metals can be prevented by

Metal sulphides occur mainly in

In joining railway tracks or cracked machine parts, reaction of Fe₂O₃ with a metal is ulitized. That metal is

_____________corrode in moist air but it is widely used for making cooking vessels and other cutlery.

How many non metals are there

In extraction of metals.sulphide ores are converted to

The characterstic of metals to emit a resonant sound is known as

Food cans are coated with tin and not with ____________