Which of the following is an example of rapid combustion?A.CandleB.CrackerC.White phosphorusD.Sulphur

The example of rapid combustion among the options given is B. Cracker.

Here's why:

A. Candle - This is an example of slow combustion. The candle burns slowly over a period of time.

B. Cracker - This is an example of rapid combustion. The cracker burns rapidly producing heat, light, sound, and gas.

C. White phosphorus - This is an example of spontaneous combustion. White phosphorus can ignite in air at room temperature without the need of any external ignition source.

D. Sulphur - This is an example of slow combustion. When sulphur burns, it does so slowly and produces a blue flame.