_________ is a copper alloy used for making statues.
Alloy - Metallic substance that is composed of two or more elements is called an alloy.
Thus, bronze is a copper alloy used for making statues.
In the feed and diary industry, a strong alloy is used for making equipments. The same alloy is also used in making utensils. Name the alloy and give its composition.
(a) Give the reason why copper is used to make hot water tanks but steel (an alloy of iron) is not (b) Explain why the surface of some metals acquires a dull appearance when exposed to air for a long time.