Question

Which of the following has the lowest ignition temperature?

• A. Wood
• B. Paper
• C. Kerosene
• D. Cow Dung

Answer 1

The correct option is C

Kerosene

Explanation for the correct option

(C) Kerosene

Combustion

• When a chemical combines with oxygen gas, energy is released in the form of light and heat.
• The presence of oxygen gas as a reactant in combustion processes is required.
• Example: Water vapor is produced by the combustion of hydrogen gas.

Ignition temperature

• The lowest temperature at which a substance ignites spontaneously is known as the ignition temperature of the substance.
• The ignition point is another name for the ignition temperature.
• The minimum temperature that fuel must be heated to ignite and begin burning is known as the ignition temperature of the fuel.
• The ignition temperature of kerosene is $37-65°\mathrm{C}$.
• Kerosene has the lowest ignition temperature compared to others.

Explanation for incorrect options

(A) Wood

The ignition temperature of the wood is $250-300°\mathrm{C}$.

(B) Paper

The ignition temperature of the paper is $218-246°\mathrm{C}$.

(D)Cow Dung

The ignition temperature of cow dung is $298-418°\mathrm{C}$.

Therefore, the correct option is (C) Kerosene.