Question

When vapors of a flammable or combustible liquid are mixed with air in the proportions in the presence of a source of ignition, rapid combustion or an explosion can occur. The proper proportion is called the _______________. A. Boiling range B. Flammable or explosive range C. Flash point

Answer 1

     When vapors of flammable or combustible liquid are mixed with air in proportions in the presence of a source of ignition it is called
-B. Flammable or explosive range

Answer 2

Answer: Option (B) is the correct answer.

Explanation:

When vapors of a flammable or combustible liquid are mixed together with air in the presence of a source of ignition in proportions rapid combustion or an explosion can occur. The proper proportion is called the flammable or explosive range.

Boiling range is defined as the range of temperature which is involved distillation of oil from the starting time to the time till it evaporates.

The lowest temperature at which an ignitable mixture can be formed from a liquid in air near its surface.