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

Nitrogen gas can be prepared by heating a mixture of

  1. sodium nitrite and ammonium chloride

  2. ammonium nitrate and sodium chloride

  3. sodium nitrate and sodium chloride

  4. ammonium chloride and sodium chloride
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitrogen gas can be prepared by heating a mixture of sodium nitrite and ammonium chloride.

Multiple choice

Substances burn more rapidly in pure oxygen than in air because

  1. air contains helium

  2. air has a lower concentration of oxygen than pure oxygen

  3. air contains methane

  4. air contains ozone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Substances burn more rapidly in pure oxygen than in air because air has a lower concentration of oxygen than pure oxygen.

Multiple choice

Which of the following gases is present in an air conditioner?

  1. Neon

  2. Freon

  3. Methane

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

Freon is a chlorofluorocarbon (CFC-113). In addition to being used in air conditioning systems, it is also used as refrigerant in refrigerators and freezers and also in firefighting systems, and as an aerosol propellant.

Multiple choice

LPG is a mixture of

  1. methane and hydrogen

  2. ethane and carbon monoxide

  3. ethane and propane

  4. butane and propane

  5. pentane, butane, propane and ethane

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

LPG is a mixture of 60% propane and 40% butane for commercial uses. The higher grade propane mix is approximately 90% propane and 10% butane.

Multiple choice

Which of the following statements regarding helium is false?

  1. It is an inert gas.

  2. It was first discovered in the Sun then on Earth.

  3. It can form interstitial compounds.

  4. It does not have octet of electrons in its outermost shell.

  5. It is the most abundant inert gas in the atmosphere.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Most abundant inert gas in the atmosphere is argon.

Multiple choice

Which of the following was not used by Stanley L .Miller and Harold C. Urey while creating a primitive environment in the laboratory?

  1. Water

  2. Methane

  3. Ammonia

  4. Oxygen

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

Yes, it is the correct answer. Stanley L. Miller and Harold C. Urey conducted the Miller-Urey experiment in 1953 to demonstrate how  life would have originated on the earth. They created an environment in laboratory, which mimicked the environment of earth as it was during the time of origin of life. Water, methane, ammonia and hydrogen were used in that experiment.

Multiple choice

Which of the following gases was emitted in Bhopal tragedy?

  1. Chlorofluoro Carbon (CFC)

  2. Ethane

  3. Nitrous oxide

  4. Methyl isocynate

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

Methyl isocynate was emitted in Bhopal tragedy. Methyl isocyanate (MIC) is an organic compound having molecular formula CH3NCO. MIC happens to be the intermediate chemical in the production of carbamate pesticides. MIC is also employed in the manufacturing of rubbers and adhesives. It is a highly toxic and irritating material. MIC is enormously dangerous to human health. In Bhopal disaster, it killed nearly 8,000 people instantly and around 20,000 people died due to its delayed lethal effects.