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 biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

Choose the correct statement from the following:

  1. Nitrogen is neutral to litmus.

  2. Nitrogen is a non-combustible and non-supporter of combustion.

  3. Nitrogen is a poisonous gas.

  4. At low temperature, nitrogen can be liquefied on compression.
Reveal answer Fill a bubble to check yourself
A,B,D Correct answer
Explanation

Nitrogen gas is neutral to litmus and is a non combustible nor supports combustion and can be liquefied on compression at low temperatures. It is non poisonous.

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

Nitrogen is not a supporter of:

  1. Combustion

  2. Decomposition

  3. Both A and B

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

Nitrogen is not a supporter of COMBUSTION.
Nitrogen is a colorless, odorless, tasteless diatomic gas. It is found in Group 15 of the periodic table. It does not burn, does not support combustion, and is only slightly soluble in water. It is relatively inactive chemically, but many of its compounds display marked reactivity.

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

Air has________ composition with________ oxygen at high attitudes.

  1. fixed, less

  2. variable, less

  3. variable, more

  4. fixed, more
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Air has fixed composition with less oxygen at high altitudes. Air contains 78% nitrogen and 21% oxygen and less than 1% He, Ar, Ne and water vapor content. This composition remains fixed at all locations but the oxygen becomes less dense at high altitudes so it is difficult to breathe in such low concentration of air.

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

The correct ascending order of gases as per their composition in air is:

  1. oxygen< carbon dioxide <nitrogen< div=""></nitrogen<>

  2. hydrogen < oxygen < nitrogen

  3. nitrogen < hydrogen < oxygen

  4. nitrogen < oxygen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

By volume dry air contains $78.09\%$ Nitrogen, $20.95\%$ Oxygen, $0.93\%$ Argon, $0.04\%$ Carbon dioxide and small traces of other gases.


Ascending order of gases as per their composition in air is-

Hydrogen $<$ Oxygen $<$ Nitrogen

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

The correct ascending order of gases as per their composition in air is:

  1. oxygen < carbon dioxide < nitrogen

  2. hydrogen < oxygen < nitrogen

  3. nitrogen < hydrogen < oxygen

  4. oxygen < carbon dioxide < hydrogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

By volume dry air contains $78.09\%$ Nitrogen, $20.95\%$ Oxygen, $0.93\%$ Argon, $0.04\%$ Carbon dioxide and small traces of other gases.

Ascending order of gases as per their composition in air is-
Hydrogen $<$ Oxygen $<$ Nitrogen

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

Most abundant constituent of dry air in terms of volume is:

  1. carbon dioxide

  2. helium

  3. nitrogen

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

The most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. 

Oxygen is the next most abundant gas, present at levels of 20 to 21%. 
Although humid air seems like it contains a lot of water, the maximum amount of water vapour that air can hold is only about 4%.

Hence, the correct option is $\text{C}$

Multiple choice biology natural disasters: winds, storms and cyclones composition of air introduction to air natural resources - air

Which of the following constituent gas is not directly used by the living beings?

  1. Oxygen

  2. Nitogen

  3. Hydrogen

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

Nitrogen gas cannot be used by the human beings directly, breathing pure nitrogen means we're not breathing oxygen, which means that we'll die of oxygen deprivation in a matter of minutes
Hence option B is correct.

Multiple choice biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

A colourless non-irritant lightly toxic gas that impairs respiration is

  1. Sulphur dioxide

  2. Nitrous oxide

  3. Carbon dioxide

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

Carbon monoxide is a light and toxic gas which impairs the process of respiration. The affinity of the carbon monoxide towards haemoglobin is more compared to the affinity towards oxygen which results in the binding of carbon monoxide with haemoglobin, forming carboxyhemoglobin. There are very less sites for oxygen binding and transport of the oxygen is reduced in the body which is known as carbon monoxide poisoning. Due to lack of oxygen, the process of respiration is hampered.

Thus, the correct answer is option D. 

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Biomass ferments to form _________ in the presence of air.

  1. methane

  2. ethane

  3. oxygen

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

Microbial conversion of organic matter to methane called Biogas has become attractive as a method of waste treatment and resource recovery. This process is anaerobic(absence of oxygen) and is carried out by action of various groups of anaerobic bacteria.
Three basic points about this process are that most of the important bacteria involved in biogas production process are anaerobes and slow growing, a greater degree of metabolic specialization is observed in these anaerobic microorganisms and that most of the free energy present in the substrate is found in the terminal product methane. Since less energy is available for the growth of organism, less microbial biomass is produced and, consequently, disposal of sludge after the digestion may not be a major problem.
Hence, the statement is false.