Combustion | MCQs

Explanation

Cooking gas, also known as liquified petroleum gas (LPG), is a mixture of propane and butane.

It is a flammable mixture of hydrocarbon gases.

Explanation

The burning of substances in air or oxygen on heating, with the release of a large amount of heat energy and light energy, is called combustion

while

In conduction, heat transfer occurs between objects by direct contact.

In convection, the heat transfer takes within the fluid

Condensation is the process by which water vapor in the air is changed into liquid water; it's the opposite of evaporation

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ND22-1-2023

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RY24012023

Explanation

• When fuel is burned, carbon dioxide gas (CO₂) is primarily produced.
• The combustion of fuel, particularly hydrocarbons, typically results in the formation of carbon dioxide and water vapor (H₂O).

Explanation

• Burning process is a chemical process.
• But it is not a physical process.

The characteristics of the burning process are:

• It is a chemical process.
• It takes place in all living cells.
• It release energy.
• Various enzymes are required.