Chemistry

Chemistry of Gases and Applications

1,190 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

Which of the following methods are used for liquefaction of air?

  1. Ostwald process and Solvay process

  2. Claude process and Linde process

  3. Haber process and Parke’s process

  4. Claude process and Haber process

  5. Linde process and Parke’s process
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Both Claude process and Linde process can be used for the liquefaction of air. 

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.

Multiple choice

What is the full form of CNG?

  1. Carbon nitrogen gas

  2. Compressed nitrogen gas

  3. Compressed natural gas

  4. Compressed natural gasoline

  5. Compressed neon gas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Full form of CNG is compressed natural gas.

Multiple choice

Which of the following group of gases have highest concentration in atmosphere?

  1. Oxygen and Hydrogen

  2. Hydrogen and Nitrogen

  3. Nitrogen and Oxygen

  4. Carbon dioxide and Hydrogen

  5. Carbon dioxide and water vapours
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Nitrogen and oxygen are the main components of the atmosphere by volume. Together these two gases make up approximately 99% of the dry atmosphere. But Nitrogen is present in the highest concentration(78.08%).

Multiple choice

Which of the following pairs of silicates has the same general formula?

  1. Chain silicates and double chain silicates

  2. Double chain silicates and sheet silicates

  3. Sheet silicates and cyclic silicates

  4. Cyclic silicates and chain silicates

  5. Cyclic silicates and double sheet silicates
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cyclic silicates as well as chain silicates have same general formula, i.e. (SiO3)n2n-.

Multiple choice

Consider the following statements about natural gas.

  1. Natural gas is mainly composed of methane.
  2. When natural gas occurs along-with petroleum in oil wells, it is called wet gas.
  3. Natural Gas Liquids (NGLs) include methane, ethane, propane, n-butane, iso-butane, and natural gasoline.

Which of the statements is/are correct?

  1. 1 only

  2. 1 and 2 only

  3. 1 and 3 only

  4. All are correct
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statements 1 and 2 are correct, while statement 3 is wrong. Natural Gas Liquids (NGLs) include ethane, propane, n-butane, iso-butane, and natural gasoline.

Multiple choice

Which of the following are advantages of LPG over gasoline as a motor fuel? (a) It is cheaper than gasoline. (b) It is highly knock resistant. (c) Its octane number is quiet high and the load sensitivity is very low. (d) Residue and oil contamination is small as it burns cleanly.

  1. (a), (b) and (c)

  2. (a), (b) and (d)

  3. (a), (c) and (d)

  4. All are correct
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement (c) is incorrect. Octane number of LPG is quiet low and its load sensitivity is very high.

Multiple choice

Which of the following statements is incorrect?

  1. Helium is used in producing very low temperature.

  2. Helium is used in filling incandescent metal filament bulbs.

  3. A mixture of helium and oxygen is used by deep sea divers.

  4. Helium forms interstitial compounds.

  5. Helium is used in gas cooled atomic reactors as a heat transfer agent.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Krypton and Xenon are used in filling incandescent metal filament electric bulbs.

Multiple choice

Which of the following statements regarding argon is INCORRECT?

  1. Argon is a colourless, odourless and tasteless gas.

  2. Argon constitutes 0.934 percent of the atmosphere by weight.

  3. Argon is the most abundant noble gas in the atmosphere.

  4. Argon gas is approximately 1.4 times as heavier as air.

  5. Argon is 2.5 times more soluble in water than nitrogen.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Argon constitutes 1.288 percent of the atmosphere by weight and 0.934 percent by volume.