Question

drops of oil are poured on the hinges of a door? give reason

Answer 1

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As the oil act as a lubricant to reduce the friction for the hinges to move easily drops of oil are poured o the hinges of a door.

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Answer 2

Drops of oil are poured on the hinges of a door because Oil allows them to move with less friction.

Lubrication is one way to make a surface smoother. A lubricant is a dense and slippery substance which is used to reduce the friction between two surfaces

The door hinges are open to atmosphere therefore , the chances of corrosion increases and the surface becomes irregular enough to promote friction. Applying oil on the door hinges can reduce friction and the door can open smoothly.