A)
Substance Type of combustion LPG Rapid Phosphorus Spontaneous Dynamite Explosion
B)
Substance Type of combustion LPG Spontaneous Glass Explosion Dynamite Rapid
C)
Substance Type of combustion Phosphorus Explosion LPG Rapid Dynamite Spontaneous
D)
Substance Type of combustion LPG Spontaneous Glass Rapid Dynamite Explosion
Correct Answer: A
Solution :
LPG undergoes rapid combustion. When a burning matchstick is taken near the gas stove containing LPG, the gas catches fire easily. The gas burns rapidly producing heat and light. Phosphorus bursts into flames when kept in air at room temperature. It is an example of spontaneous combustion in which the material suddenly bursts into flames without any external ignition. Dynamite when ignited explodes with the evolution of heat, light, and sound. Large amount of gas is also liberated in the process. The correct answer is A.
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