Question

Which gas in the air is essential for burning of wood?

• A. Helium
• B. Oxygen
• C. Nitrogen
• D. Hydrogen

Answer 1

The correct option is B

Oxygen

Explanation for correct option:

Option(B): Oxygen

• Oxygen is required for combustion to take place.
• An example of combustion is burning of wood.
• Combustion can be defined as the process in which a substance burns in the presence of oxygen to produce heat and light.

Explanation for incorrect option:

Option(A): Helium

• Helium is a noble gas that means it can't burn.
• An example of inert gas is helium and inert means non-combustible.

Option(C):Nitrogen

• Nitrogen absorbs heat and combustion efficiency is decreased.
• It is a non-flammable gas which doesn't support combustion.

Option(D): Hydrogen

• Hydrogen has very low density.
• The power output is decreased if we use hydrogen.

Therefore the correct option is Option(B): Oxygen.