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 chemistry the s-block elements (alkali and alkaline earth metals) anomalous properties of lithium group 1 elements: alkali metals properties of s block elements

Which nitrate will decompose to give $NO _2$ on heating?

  1. $NaNO _3$
  2. $KNO _3$
  3. $4RbNO _3$
  4. $LiNO _3$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Only $LiNO _3$ gives $NO _2$ on heating. All other nitrates give oxygen.
$4LiNO _3 \, \xrightarrow{\Delta} \, 2Li _2O \, + \, 4NO _2 \, + \, O _2.$
$2NaNO _3 \, \xrightarrow{\Delta} \, 2NaNO _2  \, + \, O _2$

Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

The reservoir pool for gaseous cycles of matter is

  1. Atmosphere

  2. Hydrosphere

  3. Both (A) and (B)

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

Biogeochemical cycles involves the exchange of minerals between abiotic and biotic components of the biosphere. It is mainly of three types hydrological, gaseous and sedimentary.
Gaseous cycle involves the transportation of matter through the atmosphere. Some examples of the gaseous cycle are carbon cycle, nitrogen cycle, oxygen cycle.
So, the correct answer is option A.

Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

Which chemical is used in air conditions and refrigerators?

  1. CFCs

  2. Chlorine

  3. Fluorine

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

Chlorofluorocarbons (CFCs) were widely used as refrigerants in air conditioning and refrigeration systems due to their excellent cooling properties. However, they were phased out under the Montreal Protocol because they damage the ozone layer.

Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

Sedimentary cycle having a small gaseous component is found in

  1. Phosphorus

  2. Nitrogen

  3. Carbon

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

Sedimentary cycle consists of weathering of an existing rock followed by the erosion of minerals, transport and deposition. It has earth's crust as the reservoir pool. Sedimentary cycle having a small gaseous component is found in sulphur. Other sedimentary cycles include iron cycle, calcium cycle.

Thus, the correct answer is 'Sulphur.'

Multiple choice botany energy flow in an ecosystem biogeochemical cycle nutrient cycles species, communities and ecosystems

In which of the following both pairs have correct combination?

  1. Gaseous nutrient cycle - Carbon and nitrogen

    Sedimentatry nutrient cycle - Sulphur and phosphorus

  2. Gaseous nutrient cycle - Carbon and sulphur

    Sedimentary nutrient cycle - Nitrogen and phosphorus

  3. Gaseous nutrient cycle - Nitrogen and sulphur

    Sedimentary nutrient cycle - Carbon and phosphorus

  4. Gaseous nutrient cycle - Sulphur and phosphorus

    Sedimentary nutrient cycle - Carbon and nitrogen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

There are various nutrient cycles in an ecosystem which recycles the essential nutrients. The cycles are also called as biogeochemical cycles. Gaseous nutrient cycles include carbon cycle, oxygen cycle, nitrogen cycle. In these cycles, the element is released in the air. Sedimentary nutrient cycles include sulphur cycle, phosphorus cycle. In these cycles, the element is released in the sedimentary rocks.

Thus, the correct answer is 'Gaseous nutrient cycle - Carbon and nitrogen
Sedimentatry nutrient cycle - Sulphur and phosphorus.'

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

The phosphorus cycle differs from those of carbon and nitrogen as well as from those of sulphur, oxygen and hydrogen in that it lacks 

  1. Water

  2. Dust particles

  3. Gaseous phase

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

The abiotic components which are recycled without any involvement of the gaseous form are known as the sedimentary cycle. The element is present in the form of salts as rocks in the geosphere which is taken up by the plants and then transferred to the animals. The phosphate is generally transferred and used in the form of ATP by the living cells. The remaining abiotic components including sulphur, carbon, oxygen and hydrogen. 

Thus, the correct answer is option C. 

Multiple choice biology environmental factors soil-nature climate factors abiotic components

Which of the following is present in maximum amount in atmosphere ____________.

  1. Oxygen

  2. Nitrogen

  3. Carbon dioxide

  4. Hydrogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
78.03% of the atmosphere consists of Nitrogen. Some is being added to it through volcanic eruptions, erosion of sedimentary rocks and recycled through denitrification.
So, the correct answer is 'Nitrogen'
Multiple choice our life and environment geography

A foul-smelling gas known for its rotten egg-like odour called hydrogen sulphide is also emitted from the petroleum refineries.  

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydrogen sulphide is a common byproduct of petroleum refining and is well-known for its characteristic rotten egg odor.

Multiple choice evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

Which of the following gas is present in large quantity in atmosphere?

  1. Oxygen

  2. Hydrogen

  3. Nitrogen

  4. Methane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Atmosphere is the layer of gases surrounding the planet. The major gases present in atmosphere are nitrogen, oxygen, argon, carbon dioxide and other gases in minute quantity. Among all the gases present in atmosphere, nitrogen constitutes highest amount. Percentage of nitrogen present in atmosphere is 78.

Multiple choice geography what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

The most abundant constituent of dry air in terms of volume is ________.

    1. carbon dioxide

    2. nitrogen

    3. oxygen

    4. none of these
    Reveal answer Fill a bubble to check yourself
    B Correct answer
    Explanation

    Nitrogen is important gas of which about 78% of the atmosphere's volume is made up. Nitrogen serves mainly as a diluent. It is relatively inactive chemically, though many f its compounds are very active. Its main function in the atmosphere is to regulate combustion by diluting oxygen. It also indirectly helps in oxidation of different kinds.