Question

Ventilator are made in the upper part
of the rooms Why ?
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Answer 1

Answer:

Ventilators are provided in the rooms at the top of the roofs because if the air inside the room gets hot, the hot air rises up and flows through these ventilators and thus cool air remains at bottom. ... Thus ventilators maintain conventional currents to keep the air fresh in the room.

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Answer 2

Answer:

so that there can be a clean n fresh air to pass in all over the room ...