Kilimanjaro Mock Exams with Answers (Marking Schemes)
Form Four – Mock Examinations – May 2023
To download the Exams with Answers click the links below:
Fresh Air Systems in Schools
Creates
a ‘Positive Pressure’ Room
When
using a fresh air system in a sealed classroom, the air pressure inside remains
higher than that of the outside (hence positive pressure).
This means that
whenever a door or window is opened, the air inside pushes out, rather than
unfiltered air from the outside pushing in.
Thus, even if a student has to go
to the toilet, when they exit the room temporarily, the integrity of the fresh
air in the classroom is maintained.
