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

Which of the given statements about components of air is/are correct? (i) Nitrogen helps in diluting the effect of carbon dioxide. (ii) Oxygen supports combustion and burning. (iii) Noble gases are present in large quantities in air. (iv) Water vapours are present in large quantities in air.

 

  1. Only (i) and (ii)

  2. <span style="font-family:">Only<span style="font-family:"> (ii) and (iii)

  3. <span style="font-family:">Only<span style="font-family:"> (ii)

  4. <span style="font-family:">Only<span style="font-family:"> (ii) and (iv)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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Multiple choice

Pure air is a/an

  1. compound

  2. element

  3. homogeneous mixture

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

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Multiple choice

Which of the following is used as a propellant in rocketry?

  1. Hydrogen peroxide

  2. Hydrogen fluoride

  3. Hydrogen chloride

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

Hydrogen peroxide (H2O2) is an oxidiser, commonly used as bleach. It is the simplest peroxide. Hydrogen peroxide is a clear liquid, slightly more viscous than water, that appears colourless in dilute solution. It is used as a disinfectant, antiseptic, oxidiser and as a propellant in rocketry.

Multiple choice

Which of the following is not a noble gas?

  1. Hydrogen

  2. Helium

  3. Argon

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

Hydrogen is not a noble gas. The noble gases make a group of chemical elements with similar properties. Under standard conditions, they are all odourless, colourless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and the radioactive radon (Rn).