Question 19 of 30
Air vent to tanks is provided for
A
preventing build up of pressure or vaccum
B
allowing liquid to come out when tank is full
C
preventing fire
D
for ventilation
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Answer & Explanation
The correct answer is Option A: preventing build up of pressure or vaccum.
Air vent pipes are installed on tanks to allow air to escape when filling and to let air enter when emptying. This prevents dangerous pressure buildup or vacuum formation which could cause tank structural damage.