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 photosynthesis modern concept of photosynthesis photosystems photosynthesis in higher plants

Photolysis of water releases ........... gas.

  1. ${ CO } _{ 2 }$
  2. ${ O } _{ 2 }$
  3. ${ NH } _{ 3 }$
  4. ${ CH } _{ 3 }$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Photolysis, the chemical process by which molecules are broken down into smaller units through the absorption of light.

Photolysis of water is the process by which water is split into H+, oxygen, and electrons in the presence of light.
So the answer is 'O2'. 

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

Why liquefied petroleum gas is considered as light distill product of crude oil?

  1. It's weight is less

  2. It is easy to transport

  3. It is a gas which is easy to compress and filled in cylinder

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

Liquefied petroleum gas is called as light distillate product because it contains less quantity of carbon and hydrogen. Hence it is light.

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

Producer gas is a mixture of:

  1. $CO\, and\, H _2$
  2. $CO\, and\, N _2$
  3. $SO _2\, and\, H _2$

  4. none of the above
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation
Producer gas is a mixture of flammable gases and non-flammable gases. Flammable gases are carbon monoxide and hydrogen. Non-flammable gases are mainly nitrogen and carbon dioxide.
Producer gas has lower heating value than the other gaseous fuels. It is used mainly as a fuel in large industrial furnace.

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

Statement $I$: Refining of petroleum requires the separation of its components into different fractions.
Statement $II$: The hydrocarbon chains that makeup petroleum have the same basic carbon chain (same number of $C$ in the parent).

  1. Statement $I$ is true and Statement $II$ is false
  2. Statement $I$ is false and Statement $II$ is true
  3. Statement $I$ and $II$ are false
  4. Statement $I$ and $II$ both are true and Statement $II$ is correct explanation of Statement $I$
  5. Statement $I$ and $II$ both are true and Statement $II$ is not a correct explanation of Statement $I$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Refining of petroleum requires the separation of its components into different fractions. The hydrocarbon chains that make up petroleum have the different basic carbon chain (different number of $Cs$ in the parent).
Hence, the statement $I$ is true but statement $II$ is false.

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

Petroleum is an important source for all of the following except:

  1. propane

  2. rubber

  3. kerosene

  4. gasoline
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Rubber is the polymer which is obtained from rubber tree which is not isolated during oil  and petroleum refining.So Petroleum is an important source for all of the following except rubber where as propane,kerosene and gasoline obtained during refining of petroleum.
Hence option B is correct.