Explanation

• When a gas turns into liquid, the process is called condensation
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• Condensation - gas to liquid.
• If a gas is cooled, its particles will eventually stop moving about so fast and form a liquid.
• This is called condensation and occurs at the same temperature as boiling.

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Explanation

The usual gases used for lifting airships are hydrogen and helium.

Hydrogen is the lightest known gas and thus has great lifting capacity,

Helium is not as buoyant but is far safer than hydrogen because it does not burn.

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Explanation

Biogas is a type of natural gas produced through the anaerobic digestion of organic matter.

Such as animal manure and food waste.

It primarily consists of methane and carbon dioxide.

Explanation

• The Sui Gas Field, located near Sui in Balochistan Province, Pakistan.
• It was discovered by Pakistan Petroleum Limited in 1952.
• Production of Sui gas began in 1955.
• It remains the largest natural gas field in Pakistan.

Explanation

• Air is a mixture of different gases.
• Primarily consisting of nitrogen (78%), oxygen (21%), and trace amounts of other gases.

Explanation

At night, trees switch from photosynthesis to respiration, releasing carbon dioxide instead of oxygen.

During the day, trees perform photosynthesis, taking in carbon dioxide (CO2) and releasing oxygen (O2).

Explanation

Effusion refers to the movement of gas particles through a small hole from a region of high pressure to a region of low pressure.

This phenomenon occurs when gas molecules escape through a tiny opening, often without significant interaction with other molecules. 

Explanation

The ratio Cp/Cv for a diatomic gas is approximately equal to 1.4.

Explanation

• Carbon dioxide (CO2) is a greenhouse gas that plays a significant role in the Earth's greenhouse effect.
• It traps heat radiated from the Earth's surface, maintaining the Earth's temperature and keeping it warm enough to support life.
• Other greenhouse gases include methane (CH4), water vapor (H2O), and nitrous oxide (N2O).

Explanation

• The gas found in the greatest amount in the universe is Hydrogen.
• Making up 74% of all baryonic matter in the universe.

The elements that make up the universe, ranked in order of their abundance:

• Hydrogen
• Helium
• Oxygen
• Carbon
• Neon
• Iron
• Nitrogen
• Silicon
• Magnesium
• Sulfur