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

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

The following table of properties was printed out for saturated liquid and saturated vapour of ammonia. The titles for only the first two columns are available. All that we know is that the other columns (columns 3 to 8) contain data on specific properties, namely, internal energy (kJ/kg), enthalpy (kJ/kg) and entropy (kJ/kg.K).

             
T(0C)
P(kPa)

||||||| | -20 | 190.2 | 88.76 | 0.3657 | 89.05 | 5.6155 | 1299.5 | 1418.0 | | 0 | 429.6 | 179.69 | 0.7114 | 180.36 | 5.3309 | 1318.0 | 1442.2 | | 20 | 857.5 | 272.89 | 1.0408 | 274.30 | 5.0860 | 1332.2 | 1460.2 | | 40 | 1554.9 | 368.74 | 1.3574 | 371.43 | 4.8662 | 1341.0 | 1470.2 |

The specific enthalpy data are in columns

  1. 3 and 7

  2. 3 and 8

  3. 5 and 7

  4. 5 and 8
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

From saturated ammonia table column 5 and 8 are the specific enthalpy data column.

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.

Multiple choice

Lithium nitrate on heating forms

  1. lithium nitrite and oxygen gas

  2. lithium oxide, nitrogen dioxide and oxygen gas

  3. lithium nitride and oxygen gas

  4. lithium oxide, hydroxide and oxygen gas

  5. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct statement. It forms lithium oxide, nitrogen dioxide and oxygen gas.

Multiple choice

What gas is found on Bespin?

  1. Sullista

  2. Tibanna

  3. Ulithim

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

Tibanna gas is the valuable resource mined on Bespin at Cloud City. It is used in blasters and hyperdrives.