Which factor explains why coal dust in an enclosed space is more explosive than coal dust blown outdoors into an open space ?

Question

A.
Temperature
B.
Surface area
C.
Concentration
D.
Volume
E.
Catalyst

Answer 1

The correct answer is C. Concentration.

In an enclosed space, the concentration of coal dust can reach levels that are higher than in an open outdoor space. When the concentration of dust is sufficient, it can lead to a chain reaction and result in an explosion. In contrast, when coal dust is dispersed outdoors, it is diluted by the open air, reducing the potential for an explosive reaction.