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 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.

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

If the amount of nitrogen in air is low, then the burning capacity of air decreases.

  1. True

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

Nitrogen is not combustible under ordinary circumstances. In fact, the National Fire Protection Association has given nitrogen a flammability rating of zero so it has no effect on burning.

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

Which of the following gas, when ignited, burns with a blue flame and is not very soluble in water?

  1. $O _2$
  2. $CO _2$
  3. $N _2$
  4. $He$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Nitrogen when ignited in presence of oxygen it forms various oxides of nitrogen like $NO,\ NO _2$ and burns with a blue flame.
Hence, option $C$ is correct.
Multiple choice chemistry nitrogen and sulfur nitrogen gas component of air - nitrogen nitrogen

How many of the following compound on thermal decomposition gives $N _2$ gas?
$(NH _4) _2 Cr _2 O _7$, $NH _4 NO _3$, $NH _4 IO _3$, $NH _4 NO _2$, $Ba(N _3) _2$, $Ba(NO _3) _2$, $(NH _4) _2 SO _4$, $(NH _4) _2 CO _3$

  1. 2

  2. 3

  3. 4

  4. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$(NH _4) _2Cr _2O _7\longrightarrow N _2+Cr _2O _3+H _2O$

$NH _4NO _3\longrightarrow N _2O+2H _2O$
$NH _4IO _3\longrightarrow$
$NH _4NO _2\longrightarrow N _2+2H _2O$
$Ba(N _3) _2\longrightarrow Ba+3N _2$
$Ba(NO _3) _2\longrightarrow BaO+NO _2+O _2$
$(NH _4) _2SO _4\longrightarrow NH _4HSO _4+NH _3$
$(NH _4) _2CO _3\longrightarrow 2NH _3+CO _2+H _2O$
$\therefore$ Answer is option B=3

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

Which of the following is a property of nitrogen?

  1. Supports combustion

  2. Allows combustion

  3. Supports but does not allow combustion

  4. Neither supports nor allows combustion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Due to the presence of  a triple bond between two nitrogen atoms of a nitrogen molecule it neither supports nor allows combustion.
Hence option D is correct.