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

Consider the following statements:

  1. A compound added to odourless LPG cooking gas for imparting a detectable smell to the gas is of sulphur.
  2. Solar panels are mainly made of silicon.

Which of the given statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement 1 is correct. LPG is an odourless gas. To give it a distinct odour, a sulphur compound is mixed with LPG gas. Statement 2 is also correct. Solar panels are mainly made of silicon, which is responsible for the conversion of solar energy.

Multiple choice

Which of the following could replace 'drive out' as used in the passage?

Directions: Read the following passage carefully and select the most suitable option according to the corresponding number in the passage.

All life forms need (1) air and water. They are very important for living things. We can feel air all around us, but we cannot see or hold it. That's becoze (2) air is made up of gases. Gases are stuff (3) like steam, but they are so light that you cannot see or touch them. Some gases mixed in air are very important for life. We also find them in water when air mixes (4) with water. That happens whenever air touches water. Living things get these gases by taking in (5) either air or water. They drive out (6) harmful gases and things from their bodies with the air or water they pass out. The air and water flowing (7) in and out of living things keep the clock of life (8) ticking inside them.

  1. drink

  2. eject

  3. expel

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

'Driving out' is a forceful action and the only word that matches this description is 'expel'.

Multiple choice

Fill blank (i).

Directions: Read the following passage having some numbered blanks.

Biogas ______(i)_____ obtained from animal dung and other agricultural wastes.  Animal dung and other agricultural wastes are mixed with water and ________(ii)_______ into a digester. In the absence of air, the biomass ________(iii)_______ to give a combustible gas, _________(iv)_______ is a mixture of gases like methane, carbon dioxide, hydrogen and hydrogen sulphide.

  1. has been

  2. had been

  3. was

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

The passage is in present tense. Hence the use of ‘is’.

Multiple choice

Fill blank (ii).

Directions: Read the following passage having some numbered blanks.

Biogas ______(i)_____ obtained from animal dung and other agricultural wastes.  Animal dung and other agricultural wastes are mixed with water and ________(ii)_______ into a digester. In the absence of air, the biomass ________(iii)_______ to give a combustible gas, _________(iv)_______ is a mixture of gases like methane, carbon dioxide, hydrogen and hydrogen sulphide.

  1. fed

  2. feeded

  3. fedded

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

Past participle form of the word ‘feed’ is ‘fed’.

Multiple choice

Fill blank (iv).

Directions: Read the following passage having some numbered blanks.

Biogas ______(i)_____ obtained from animal dung and other agricultural wastes.  Animal dung and other agricultural wastes are mixed with water and ________(ii)_______ into a digester. In the absence of air, the biomass ________(iii)_______ to give a combustible gas, _________(iv)_______ is a mixture of gases like methane, carbon dioxide, hydrogen and hydrogen sulphide.

  1. that

  2. who

  3. what

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

The rule regarding the use of ‘that’ and ‘which’ is that non-restrictive relative clauses are introduced by ‘which’. Since ‘is a mixture of gases like methane, carbon dioxide, hydrogen and hydrogen sulphide’ is a non-restrictive relative clause, so 'which' should be used.

Multiple choice physics electric current and its effects coil and fuse heating effect of electric current- uses applications of heating effect of electric current

Why are bulbs filled with chemically inactive Nitrogen or Argon gas?

  1. To prevent oxidation of Tungsten filament

  2. To prevent dehydration of Tungsten filament

  3. To prevent oxidation of Steel filament

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bulbs are filled with chemically inactive Nitrogen or Argon gas to prevent the oxidation of tungsten filament used in the bulb.

Multiple choice chemistry non-metals dihydrogen fuel dihydrogen as a fuel introduction to hydrogen

Hydrogen gas is:

  1. has high molecular weight.

  2. a medium for storage of energy

  3. excellent fuel

  4. both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrogen is not found in pure form on Earth, however, so it must be produced from other compounds such as natural gas, biomass, alcohols or water. In all cases it takes energy to convert these into pure hydrogen. For that reason, hydrogen is really an energy carrier or storage medium rather than an energy source in itself.

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

Wood charocal is used in gas masks because it:

  1. has good smell

  2. dissolves poisonous gases

  3. adsorbs poisonous gases

  4. reacts with poisonous gases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Activated charcoal is a very good adsorbent. It can easily adsorb large volumes of gases easily. Hence it is used in gas masks to adsorb harmful gases. It cannot adsorb oxygen which makes it perfect for gas masks.