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 gas pops with a lighted splint?

  1. chlorine

  2. carbon dioxide

  3. ammonia

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

Hydrogen gas reacts explosively with oxygen in the air when ignited, producing a characteristic squeaky pop sound.

Multiple choice

which gas turns lime water milky?

  1. chlorine

  2. carbon dioxide

  3. ammonia

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

Carbon dioxide reacts with calcium hydroxide (limewater) to form calcium carbonate, which is an insoluble white solid that makes the solution look milky.

Multiple choice

which gas bleaches litmus paper?

  1. chlorine

  2. carbon dioxide

  3. ammonia

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

Chlorine gas acts as an oxidizing agent and bleaches damp litmus paper, turning it white.

Multiple choice

What does CNG stand for?

  1. Compact nitrogen gasoline

  2. Compressed natural gas

  3. carbon nioxide gas

  4. commpressed natoral gas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

CNG stands for Compressed Natural Gas. It is a cleaner-burning alternative to traditional gasoline and diesel fuels.

Multiple choice

What are the two gases that animals exchange with their surroundings?

  1. Oxygen and carbon dioxide

  2. oxygen and nitrogen

  3. nitrogen and helium

  4. hydrogen and carbon dioxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Animals perform cellular respiration, which requires oxygen to break down nutrients and produces carbon dioxide as a waste product. These are the two primary gases exchanged during breathing.

Multiple choice

What form of nitrogen is in the atmosphere?

  1. NO3 (nitrate)

  2. amino acids

  3. N2

  4. unicorns are pure nitrogen!
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The atmosphere is composed primarily of nitrogen gas, which exists as a diatomic molecule with the formula N2.

Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Which of the following is a green house gas?

  1. CO
  2. CO$ _2$
  3. H$ _2$
  4. N$ _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon dioxide is normally a non-polluting gas and is required for the normal process of photosynthesis by green plants. However, higher atmospheric concentrations of carbon dioxide due to the high rate of emission from the vehicle and deforestation leads to heating of earth and global warming.

So, the correct answer is option B.

Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Which of the following set is green house gases?

  1. CFC, CH$ _4$, CO$ _2$, N$ _2$O
  2. CO$ _2$, CH$ _4$, N$ _2$,O$ _2$
  3. CO$ _2$, CH$ _4$, N$ _2$,O$ _3$
  4. CO$ _2$, CFC, N$ _2$,O$ _2$
  5. CO$ _2$, CFC, CH$ _4$, N$ _2$O, O$ _3$
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation
  • Greenhouse gasses generally traps the radiations of the earth which leads to an increase in the temperature of the earth and global warming.
  • The greenhouse gasses include water vapor, carbon dioxide, methane, nitrous oxide, and ozone.

So, the correct answer is option E.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

CO$ _2$, CH$ _4$, N$ _2$O and CFCS are called as green house gases because they can absorb

  1. Ultraviolet radiation

  2. Long wave infrared radiation

  3. Visible light radiation

  4. X-rays radiation
  5. $\gamma$-rays radiation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Greenhouse gases are the gases which contribute to global warming. When the concentration of these gases increases in the atmosphere they form a layer which traps the solar radiation. Due to the trapped long wave infrared radiation, the temperature of the earth increases which leads to global warming. So the correct answer is option C.

Multiple choice physics option b: engineering physics conversion of heat into work: heat engine and it's efficiency engines and cycles refrigerators and heat pumps

What is most commonly used as the refrigerant  in heat pumps?

  1. Chlorofluorohydrocarbons

  2. Fluorine gas

  3. Hydrogen gas

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

A refrigerant is generally a fluid , which undergoes state change , from liquid to gas and back again . Chlorofluorohydrocarbons are most commonly used  as refrigerant in heat pumps .