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Physics

Physics
If the spinning speed of the earth is increased then the weight of body at the equator

Decreases
Double
Increases
Same

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Physics
One should not connect a number of electrical appliances to the same power socket because

this can damage the domestic wiring due to overloading
this can damage the appliances due to overloading
the appliance will not get full voltage
this can damage the electrical meter

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Physics
The commonly used coolant in refrigerators is

Nitrogen
Oxygen
Ammonia
Freon

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Physics
Curie point is the temperature at which

A metal loses magnetic properties.
Matter becomes radioactive
Transmutation of metal occurs.
A metal loses conductivity

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Physics
Sound of frequency below 20 Hz is called

audio sounds
supersonics
ultrasonic
infrasonic

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Physics
A car parked in the sun with its windows closed gets terribly hot inside. This is due to

The double layered wind shield
The greenhouse effect
The good conducting power of the metal body
The heat emitted by the engine

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