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प्रश्न
A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room?
विकल्प
Near the door
On the floor
On any wall
On the ceiling
उत्तर
On the ceiling
Explanation:
In the case of a fire, the air on top of the fire heats up and rises. As a result, an alarm should be installed on the ceiling of a room.
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