alleryStart learning →A fire in the vapour-air mixture above a flammable liquid belongs to which class?
AClass B
BClass A
CClass C
DClass D
Answer & Solution
Correct answer: A. Class B
1. Fires are classified by the nature of the material that is burning.
2. Class B covers burning liquids, which ignite as a vapour-air mixture above the surface.
3. Class A is a burning solid material such as wood or paper.
4. Class C is burning gases and Class D is burning metals.
5. Class E covers electrical equipment, so each class points to a different fuel and a different extinguisher.
_Source: NECTA CSEE 2021 Chemistry 032, Question 1: Multiple Choice, item (ii)_
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