Gases in Everyday Life MCQs with Answers

Which of the following is an inert gas?

• A.Oxygen
• B.Nitrogen
• C.Argon
• D.Hydrogen

Equal number of moles of O₂, Cl₂, and H₂ are enclosed in a container at room temperature. If the container leaks, then?

• A.All will effuse out at the same time but with different rates
• B.H₂ will effuse out first, followed by O₂ and then Cl₂
• C.Cl₂ will effuse out first, followed by O₂ and then H₂
• D.All will effuse out at the same rate and at the same time

Which gas is considered the most toxic among the following?

• A.Carbon dioxide
• B.Methane
• C.Nitrogen
• D.Carbon monoxide

According to kinetic molecular theory, all gases consist of small particles called _?

• A.Atoms
• B.Molecules
• C.Ions
• D.Electrons

Scuba divers use a mixture of _ in diving tanks for breathing underwater.

• A.O₂ & He
• B.N₂ & O₂
• C.N₂ & He
• D.O₂ & CO₂

Which one of the following is not the characteristic of gases?

• A.Gases have no definite shape
• B.Gases have no definite volume
• C.The force of attraction between gas molecules is very strong
• D.Gases are highly compressible

Which statement is/are correct about particles in gases?

• A.Particles are tightly packed and cannot move
• B.Particles are arranged in a fixed regular pattern
• C.Particles are closely packed but can slide past each other
• D.Particles are widely spread out

CNG stands for _?

• A.Carbon Neutral Gas
• B.Combined Natural Gas
• C.Compressed Natural Gas
• D.Compressed Nitrogen Gas

Past Paper MCQ

Which of the following is used in fire extinguishers?

• A.Oxygen
• B.Carbon dioxide
• C.Nitrogen
• D.Hydrogen

Hydrogen sulphide (H2S) gas is formed from Hydrogen and Sulphur. It smells like ?

• A.Burning sulfur
• B.Garlic
• C.Rotten eggs
• D.Ammonia