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 chemistry petrochemicals and polymers petroleum properties of alkanes petroleum and natural gas rocks and minerals

Which one of these are not the by-products obtained by processing petroleum in petrochemical industries?

  1. Vaseline

  2. Fertiliser

  3. Synthetic rubber

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

By-products obtained from processing petroleum in industries are fertilisers, synthetic rubber, synthetic fibres, medicines, vaseline, lubricants, wax, soap and cosmetics.

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

Petroleum gas mainly consists of:

  1. methene, ethene, propane and butene.

  2. methane, ethane, propane and hexane.

  3. methane, ethane, propane and butane.

  4. methane and butane.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Liquefied Petroleum Gas or LPG (also called Autogas) consists mainly of propane, propylene, butane, and butylene in various mixtures.It is produced as a by-product of natural gas processing and petroleum refining. The components of LPG are gases and will evaporate at normal temperatures and pressures, as a result it is stored in pressurised steel bottles.  Unlike natural gas, LPG is heavier than air, and thus will flow along floors and tend to settle in low spots, such as basements.Such accumulations can cause explosion hazards.

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

Paraffin is a by-product of?

  1. Cottage industries involving bee-keeping

  2. Processing of agricultural wastes

  3. Petroleum refining

  4. Leather industry
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Paraffin, a white or colourless, tasteless, odourless, water-insoluble, solid substance not easily acted upon by reagents, consisting of a mixture of hydrocarbons chiefly of the alkane series, obtained from crude petroleum in Petroleum Refining.
Multiple choice chemistry petrochemicals and polymers petroleum properties of alkanes petroleum and natural gas rocks and minerals

Which of the following is obtained on fractional distillation of petroleum ?

  1. Paraffin wax

  2. Asphalt

  3. Petroleum gas

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Paraffin wax, Petroleum gas and Asphalt are the different constituents of petroleum which  vapourise at different temperature's in the fractional distillation of petroleum. 

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

The order of appearance of the following with rising temperature during the refining of crude oil is?

  1. Kerosene oil , gasoline, diesel

  2. Diesel, gasoline, kerosene oil

  3. Gasoline, diesel, kerosene oil

  4. Gasoline, kerosene oil, diesel
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

During refining of crude oil, different products are recovered according to the different boiling ranges. The order of boiling point of the given products is: Gasoline< kerosene< diesel. Therefore they are obtained in the sequence;Gasoline, kerosene ,diesel.

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Dissolved gas present in acid rain is

  1. Hydrogen chloride

  2. Nitrogen oxide

  3. Sulphur dioxide

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the given gases are present in acid rain. Many gases from the industrial effluents and burning of fuels in automobiles led to the release of these harmful gases in the air. These get mixed with rain and form the harmful acid rain.

So, option D is the correct answer.

Multiple choice evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

In ammonia, nitrogen and hydrogen always combine in $14:3$ ratio by mass. This is in agreement with :

  1. Law of conservation of mass

  2. Law of definite proportion

  3. Law of multiple proportion

  4. Law of combining volume
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Law of definite proportion states that elements always combine in the definite ratio by mass. So it is in agreement with the law of definite proportion.

Multiple choice evs let's play with water law of constant proportion - i law of constant proportion law of definite proportions

Two gases found dissolved in natural water are 

  1. oxygen and carbon dioxide

  2. hydrogen and oxygen

  3. sulphur dioxide and hydrogen

  4. chlorine and ammonia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Natural water, such as that found in rivers and lakes, contains dissolved gases like oxygen (essential for aquatic life) and carbon dioxide (from the atmosphere and respiration).

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

Agent Orange consisted of

  1. 2,4 - D

  2. 2,4,5-T

  3. Dioxin as contaminant

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Agent Orange refers to a herbicide mixture which was used by the U.S. military during the Vietnam War and it contained a dangerous chemical contaminant called dioxin. 
  • The active ingredient of Agent Orange was an equal mixture of two phenoxy herbicides – 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5 trichlorophenoxyacetic acid (2,4,5-T) and it also contained traces of the dioxin 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD).
  • So the correct option is ' All of the above'.
Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

Dinitrogen and dioxygen are main constituents of air, but these do not react with each other to form oxides of nitrogen because:

  1. the reaction is endothermic and requires very high temperature

  2. the reaction can be initiated only in presence of a catalyst

  3. oxides of nitrogen are unstable
  4. $N _{2}$ and $O _{2}$ are unreactive
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The main component of air are oxygen and they will only react together at a normal temperature. For the formation of oxides of nitrogen, a very high temperature is required.