Question

Which amongst the following will undergo spontaneous combustion at room temperature of ${\text{25}}^0\text{C}$?

• A. Fuel -A, Ignition temperature- ${\text{5}}^0\text{C}$
• B. Fuel -B, Ignition temperature-${\text{17}}^0\text{C}$
• C. Fuel -C, Ignition temperature-${\text{480}}^0\text{C}$
• D. Fuel -D, Ignition temperature-${\text{60}}^0\text{C}$

Answer 1

Answer: (A), (B)

The correct options are
A Fuel -A, Ignition temperature- ${\text{5}}^0\text{C}$
B Fuel -B, Ignition temperature-${\text{17}}^0\text{C}$

Spontaneous combustion is the combustion in which no external agent is required to start the reaction.
The ignition temperature of fuel A and B are lower than room temperature. Thus, they will start burning spontaneously at room temperature. Whereas the ignition temperature of fuel C and D are higher than room temperature. So they would not undergo spontaneous combustion.