Chemistry

Chemistry of Gases and Applications

1,175 Questions

The chemistry of gases covers atmospheric composition, noble gases, and various applications of gas compounds in industrial and biological processes. Understanding the properties of common gases, their reactions, and environmental occurrences is vital for general science sections. Use these questions to practice identifying gases and their specific uses.

Atmospheric gasesNoble gasesGas applicationsChemical compounds

Chemistry of Gases and Applications Questions

Multiple choice

The gas used in the artificial ripening of fruits is

  1. Acetylene

  2. Methane

  3. Ethane

  4. Butane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Acetylene (ethyne) is commonly used to artificially ripen fruits by triggering the natural ripening process. Note that ethylene is also used, but acetylene is the standard answer in this context.

Multiple choice

Which gas is used as fire extinguisher?

  1. Carbon dioxide

  2. Carbon monoxide

  3. Carbon suboixde

  4. Sulphur dioxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon dioxide (CO2) is used in fire extinguishers because it is denser than air and displaces oxygen, effectively smothering the fire. It also does not conduct electricity, making it safe for electrical fires. Carbon monoxide is flammable, carbon suboxide is not used in extinguishers, and sulfur dioxide is not a standard extinguishing agent.

Multiple choice

The major constituent of air is

  1. nitrogen

  2. carbon dioxide

  3. oxygen

  4. hydrogen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitrogen makes up approximately 78% of Earth's atmosphere, making it the most abundant gas.

Multiple choice

Hydrogen is a gas, ____ is a liquid.

  1. Diamond

  2. Oxygen

  3. Coca-Cola

  4. Nitrogen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hydrogen is a gas, while Coca-Cola is a liquid. The question asks to complete the analogy by providing a liquid substance.

Multiple choice

Which of the following has gaseous biogeochemical cycle system?

  1. Phosphorus

  2. Sulphur

  3. Potassium

  4. Hydrogen

  5. Calcium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Hydrogen has gaseous biogeochemical cycles. It is a cycle in which the reservoir is in the atmosphere or the hydrosphere. They are quick and relatively perfect systems, as their elements remain in more or less uniform circulation.

Multiple choice

What is CNG?

  1. Compressed neutral gas

  2. Carbon natural gas

  3. Compressed natural gas

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CNG stands for Compressed Natural Gas. It is used as a cleaner-burning alternative to gasoline and diesel in vehicles.

Multiple choice

What are the ozone depleting substances?

  1. POPs

  2. CNG

  3. CFCs

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorofluorocarbons (CFCs) are well-known ozone-depleting substances. They were historically used in refrigeration and aerosols before being phased out.

Multiple choice

Marsh gas is a common name for _____.

  1. ethane

  2. methane

  3. propane

  4. butane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Methane is commonly known as marsh gas because it is produced naturally in marshes and wetlands by the anaerobic decomposition of organic matter.