Question

Which of the following substances will have the lowest ignition temperature?

• A. L.P.G.
• B. Coal
• C. Wood
• D. Sand

Answer 1

The correct option is A L.P.G.

The substance that has the highest inflammability and can be burnt most easily will have the lowest ignition temperature.

Among the given options, L.P.G. is the easiest to burn. Even a small spark can ignite it.

Coal and wood need a higher temperature to ignite.

Sand is a non-combustible substance and does not burn easily.

Therefore, L.P.G is the most inflammable substance and has the lowest ignition temperature among the given options.