Question

Give reason for the following.
a)zinc oxide is considered as amphoteric oxide.
b) generally metal are not found in their free state.
c) metals are good conductor of heat.
d) these oxide and their solution in water called ?
e)At ordinary temperature ,the surface of metal such as magnesium aluminium and zinc are covered with a thin layer ? what is the composition of this layer state its importance.​

Answer 1

Explanation:

Sulfuric acid is sometimes referred to as the “king of chemicals” because it is produced worldwide in such large quantities. In fact, per capita use of sulfuric acid has been taken as one index of the technical development of a country. Annual production in the United States, which is the world’s leading producer, is well over 39 billion kg (86 billion pounds). It is the cheapest bulk acid.

Answer 2

Explanation:

Explanation:

Sulfuric acid is sometimes referred to as the “king of chemicals” because it is produced worldwide in such large quantities. In fact, per capita use of sulfuric acid has been taken as one index of the technical development of a country. Annual production in the United States, which is the world’s leading producer, is well over 39 billion kg (86 billion pounds). It is the cheapest bulk acid.