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Physics

Physics
Lakes freeze in cold countries in winter, leaving the water underneath at

4°F
0°F
0°C
4°C

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Physics
An aircraft can perform aerobatic manoeuvres in a vertical loop because of

Centrifugal force
Weight
Gravity
Centripetal force

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Physics
In very cold countries alcohol is used as a thermometric liquid because

Alcohol can be coloured for its level to be seen easily
It will not stick to the glass tube
Its freezing point is very low
Alcohol is a poor conductor of heat

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Physics
In a Carnot engine when heat is taken from the source, its temperature

Remains constant
Decreases
Decreases and then remains constant
Increases

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Physics
Light travels slowest in

Glass
Vacuum
Water
Air

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Physics
In a freezer ice cubes will be formed more quickly in trays made of

Wood
Plastic
Rubber
Aluminium

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MORE MCQ ON Physics

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