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 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 chemistry general principles of metallurgy extraction of copper and zinc extraction of copper and zinc from their oxides basics of metallurgy

Chloroform on reduction with zinc dust and water gives

  1. Methyl chloride

  2. Dichloro methane

  3. Chloro methane

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

$\underset{\displaystyle chloroform}{CHCl _3}\overset{\displaystyle 6[H]; Zn/H _2O}{\underset{\underset {\displaystyle -ZnCl _2}{-HCl}}{\displaystyle \rightarrow}}\underset{\displaystyle methane}{CH _4}$.
Chloroform on reduction with Zn and HCl gives dichloromethane $(CH _2Cl _2)$.

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.

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

A green house gas is

  1. $H _2$

  2. CO
  3. $CO _2$
  4. $N _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A greenhouse gas absorb radiation and emit heat energy maintaining the Earth's temperature. Sources are volcanic eruptions, burning of fossil fuels, deforestation, vehicular emission, industrial exhausts etc. which have increased the concentration of carbon dioxide in the atmosphere. The oxygen and hydrogen are transparent gases having symmetrical molecules of identical atoms, unable to rotate and vibrate.

Hence, the correct answer is 'CO$ _{2}$'.

Multiple choice chemistry nitrogen and sulfur nitrogen gas component of air - nitrogen nitrogen

Nitrogen is used to fill electric bulbs because:

  1. it is lighter than air

  2. it makes the bulb to glow

  3. it does not support combustion

  4. it is non-toxic.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nitrogen is used because it doesn't react with the hot filament. Then, it will carry heat away form the filament to cool it.

Multiple choice chemistry nitrogen and sulfur nitrogen gas component of air - nitrogen nitrogen

Which of the following is not the application of nitrogen?

  1. Refrigerant

  2. Metallurgy

  3. Match sticks

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

Liquid nitrogen is a cryogenic liquid. Like dry ice, the main use of liquid nitrogen is as a refrigerant. 

 Nitrogen is used to provide an inert atmosphere in metallurgy to prevent oxidation in certain industrial processes.
You can't fill a bulb with air or combustion of hot tungsten wire at high temperature will take place in presence of oxygen. You can't maintain vacuum either or external atmospheric pressure will break the glass. So, you have to fill it with non-reactive gas like nitrogen.

Multiple choice chemistry nitrogen and sulfur nitrogen gas component of air - nitrogen nitrogen

Nitrogen gas is very difficult to identify because of its :

  1. High dissociation energy

  2. Characteristic colour

  3. Unreactive nature

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

Nitrogen is commonly referred to as and used as an inert gas (high abundance & low cost.) Due to its inert nature it does not react with other compounds. Hence, Nitrogen gas is very difficult to identify because of its nonreactive nature. 

Multiple choice chemistry nitrogen and sulfur nitrogen gas component of air - nitrogen nitrogen

Nitrogen is used for filling the electric bulbs, because it is: 

  1. Lighter than air

  2. Capable of giving more light by the bulb

  3. Not helpful in burning

  4. Not poisonous
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

You can't fill a bulb with air or combustion of hot tungsten wire at high temperature will take place in presence of oxygen. You can't maintain vacuum either or external atmospheric pressure will break the glass. So, you have to fill it with non-reactive gas like nitrogen.

Multiple choice chemistry nitrogen and sulfur nitrogen gas component of air - nitrogen nitrogen

Which of the following applications reveal that nitrogen is inert?

  1. Tinned food products

  2. Making of fertilizers

  3. Refrigerant

  4. Electric bulbs
Reveal answer Fill a bubble to check yourself
A,D Correct answer
Explanation

Nitrogen gas is used in food packaging to prolong shelf life and preserve the freshness, integrity, and quality of the delivered product. The presence of oxygen introduces moisture which can deteriorate the food quality.

There is no vacuum in the electric bulb. On the contrary, argon gas or argon gas mixed with a little nitrogen is filled in the bulb under some pressure. Years ago there was a practice to leave vacuum inside the bulb so as to prevent the burning of tungsten filament at high temperature inside the bulb.

Multiple choice chemistry nitrogen and sulfur nitrogen gas component of air - nitrogen nitrogen

Nitrogen gas is prepared :

  1. by heating ammonium nitrate.

  2. by reacting chlorine with liquor ammonia.
  3. by passing $ HNO _3 $ vapours on red hot copper

  4. by beating lead nitrate.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

to prepare pure nitrogen in laboratory a mixture of ammonium chloride and sodium nitrite is heated.  The product formed is ammonium nitrite.  This compound is very unstable and breaks into nitrogen and water.