100+ Hard Chemistry Questions and Answers - 1

Question: 1

Mention the physical properties of sulphur dioxide?

It is a poisonous gas with suffocating smell.

It is denser than air.

It is neither combustible nor supporter of combustion.

It is readily soluble in water and forms acidic solution.

Question: 2

Mention the uses of aluminium?

It is used in making electric wires.

It is used in aluminium foils for packing and wrapping food stuffs and drugs.

Aluminium powder is used in making anticorrosion paints.

Alloys of aluminium are used in making parts of aircraft, buses.

Question: 3

Why are non metals electronegative in nature?

Non metals have five or more electrons in their valence shell, hence they have tendency to accept electrons and become electronegative.

Question: 4

Why is sulphuric acid called King of chemicals?

Sulphuric acid, is the most important chemical, used in the manufacture of large number of substances. Hence it is called as King of chemicals.

Question: 5

Give important uses of ammonia?

Used in the manufacture of fertilizers like urea.

Used in the manufacture of nitric acid by Ostwald’s process.

Used in the manufacture of washing soda by Solvay process.

Liquid ammonia is used as a refrigerant.