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 chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

Ammonia acts as a :

  1. reducing agent

  2. oxidising agent

  3. bleaching agent

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

Ammonia is a strong reducing agent. It dissolves alkali metals and other electropositive metals such as Mg,Ca,Sr,Ba etc. At low concentration deep blue solutions are formed these contain metal cations and solvated electrons.
${ Li }^{ + }+{ e }^{ - }\rightleftharpoons Li\ { Na }^{ + }+{ e }^{ - }\rightleftharpoons Na$

Multiple choice chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

What is the action of the sodium metal on ammonia?

  1. Ammonia gas is released

  2. Hydrogen gas is released

  3. Oxygen gas is released

  4. Nitrogen gas id released
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Sodium in ammonia can react in two way:
 1. in the absence of iron (III) catalyst:
the sodium metal gets dissolved in liquid ammonia. The result is a blue solution due to solvated electrons. This is the basis of the Birch Reduction reaction in the presence of alcohol.
2. In the presence of a bit of iron (III) catalyst:
Ammonia gas reacts with sodium metal to form sodium amide ($NaNH _2$) and hydrogen gas. The chemical reaction is as:
$2NH _3+2Na \rightarrow 2NaNH _2+H _2$
in the presence of a bit of an iron(III) catalyst, otherwise its a blue solution only.
Multiple choice chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

Gases: ammonia, chlorine, hydrogen chloride and sulphur dioxide 

Select the gas that matches the description given.

Statement : The gas turns moist red litmus paper blue.

  1. Chlorine

  2. Ammonia

  3. Sulphur dioxide

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

Ammonia is basic in nature which turns red litmus paper to blue and confirms that ammonia is alkaline gas.

Multiple choice chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

Which of the following would lose weight when exposed to the atmosphere?

  1. Concentrated ${H} _{2}{SO} _{4}$
  2. Anhydrous ${Na} _{2}{CO} _{3}$
  3. Solid $NaOH$

  4. A saturated solution of ammonia in water
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

${ NH } _{ 3 }$ is highly soluble in water.

Solution of ammonia in water is called liquor ammonia.
Liquor ammonia is highly volatile in nature and has a high latent heat of evaporation.
Hence, it will lose weight when exposed to atmosphere.

Multiple choice chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

Liquid ammonia is a fuel for:

  1. motorcar

  2. aeroplane

  3. monorial

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

Hydrogen is good fuel. $1$ mole of ammonia has more hydrogen than hydrogen fuel. It burns to give water and nitrogen. 

$NH _3$ is used as a fuel in rockets due to its high energy density.

It is a carbon-free fuel which is combined with liquid oxygen in rockets fuel tanks.

Another advantage is that due to its strong, pungent odour, they can be easily identified in case of fuel leakage.

Hence, option D is correct.
Multiple choice commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

What is the full form of CNG?

  1. Complete Natural Gas

  2. Compressed Neutral Gas

  3. Compressed Natural Gas

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Natural gas occurs in association with mineral oil. Therefore an oilfield yields natural gas almost invariably. It is mainly composed of methane (95%) with small amounts of propane and ethane.

Multiple choice

By what name do we often call nitrous oxide?

  1. Laughing gas

  2. Mustard gas

  3. Chlorine gas

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

Nitrous oxide (N2O) is commonly known as laughing gas. It is frequently used in dentistry and surgery for its anesthetic and analgesic effects.