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 botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Which of the following is mainly produced by the activity of anaerobic bacteria in sewage?

  1. Marsh gas

  2. Laughing gas

  3. Propane

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

Methane, also called as marsh gas, is a colourless, odourless gas that occurs abundantly in nature as the chief constituent of natural gas. The decomposition of sludge by anaerobic bacteria in sewage-treatment processes produces a gas rich in methane.

Multiple choice chemistry rocks and minerals petroleum properties of alkanes petroleum and natural gas

The strong smelling substance added to LPG is:

  1. ethyl mercaptan

  2. ethanol

  3. ethanal

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

LPG gas is basically propane and butane, and it is odorless in its natural state. The smell that you notice when there is a leak is actually the stench of an entirely different agent, called ethyl mercaptan ($C _2H _6S$). This substance is added to the gas when it leaves the main storage terminals.

Multiple choice chemistry rocks and minerals petroleum properties of alkanes petroleum and natural gas

The chemical added to LPG to help detect its leakages is:

  1. isobutene

  2. ethylamine

  3. methyl mercaptan

  4. ethyl mercaptan
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

LPG gas is basically propane and butane, and it is odorless in its natural state. The smell that you notice when there is a leak is actually the stench of an entirely different agent, called Ethyl Mercaptan (C2H6S). This substance is added to the gas when it leaves the main storage terminals.

Multiple choice chemistry rocks and minerals petroleum properties of alkanes petroleum and natural gas

What odorant is added to LPG to detect the leakage with smell?

  1. alcohol

  2. organo sulphur compounds

  3. coal tar

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

As LPG is odourless and the organo-sulphur compound has an unpleasant smell.


Hence, to detect the leakage, ethyl mercaptan (ethanethiol) is added to LPG which is an organo-sulphur compound.

Therefore, option B is correct.

Multiple choice chemistry rocks and minerals petroleum properties of alkanes petroleum and natural gas

Natural gas is composed primarily of:

  1. Methane

  2. n-butane

  3. n-octane

  4. a mixture of octanes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Natural gas is composed mainly composed  of methane, but it also contains small amounts of ethane, propane, butane, and pentane. Methane, a combination of hydrogen and carbon, is formed when plants and animals (organic matter) are present  under the sedimentary layers of the earth.

Hence option A is correct.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which of the following causes degradation of RBS?

  1. Hydrocarbons

  2. Sulphur compounds

  3. Ammonia

  4. Arsenic compounds
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Arsine is the simplest compound of arsenic. It is colourless and 2.5-times denser than air, with an odour resembling garlic. Arsine binds to haemoglobin of the red blood cells, destroying them. Arsenic disrupts ATP production. Arsenic inhibits pyruvate dehydrogenase, uncoupling oxidation phosphorylation. Arsenic poisoning also occurs through arsenic–oxygen compounds, especially arsenic trioxide, As2O3 (ATO), which is 500-times more toxic than pure arsenic. 
Hence, the correct answer is ' Arsenic compounds'.
Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

__________ is the best alternative form of gas for domestic use.

  1. Bio-gas

  2. Musturd gas

  3. Hydrogen gas

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

Bio gas is a natural gas produce through anaerobic decomposition of organic wastes. This burn with blue flame without producing fumes. It can be easily compressed and transported.

Multiple choice chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

During sewage treatment, biogases are produced which include :

  1. methane, hydrogensulphide, carbon dioxide

  2. methane, oxygen, hydrogensulphide

  3. hydrogensulphide, methane, sulphur dioxide

  4. hydrogensulphide, nitrogen, methane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

During sewage treatment in secondary treatment the biogas is produced in anaerotric sludge digestor have anaerobic bacteria which produce gases like $CO _2$, $H _2S$, $CH _4$

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following is a set of green house gases?

  1. ${\text{C}}{{\text{H}} _{\text{4}}}{\text{,}}{{\text{O}} _{\text{3}}}{\text{,}}{{\text{N}} _{\text{2}}}{\text{,S}}{{\text{O}} _{\text{2}}}$
  2. ${{\text{O}} _3}{\text{,}}{{\text{N}} _2}{\text{,C}}{{\text{O}} _{\text{2}}}{\text{,N}}{{\text{O}} _{\text{2}}}$
  3. ${{\text{O}} _3}{\text{,N}}{{\text{O}} _2}{\text{,S}}{{\text{O}} _{\text{2}}}{\text{,C}}{{\text{l}} _{\text{2}}}$
  4. ${\text{C}}{{\text{O}} _2}{\text{,C}}{{\text{H}} _4}{\text{,}}{{\text{N}} _2}{\text{O,}}{{\text{O}} _3}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ozone (O3) are all recognized greenhouse gases that contribute to the warming of the Earth's atmosphere.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following is a set of green house gases?

  1. ${\text{C}}{{\text{H}} _4},\,{O _3},\,{{\text{N}} _2}S{O _2}$
  2. ${O _3},\,{{\text{N}} _2}C{O _2},\,N{O _2}$
  3. $\,{O _3},\,{\text{N}}{{\text{O}} _2}S{O _2},\,C{l _2}$
  4. ${\text{C}}{{\text{O}} _2}{\text{C}}{{\text{H}} _{4,}}{N _2}O,\,{O _3}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Greenhouse gases include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ozone (O3), all of which trap heat in the atmosphere. Option D correctly lists a complete set of major greenhouse gases.