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Physics

Physics
Good conductor of electricity is

Graphite
Kerosene
Paper
Dry air

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Physics
In radio-communication, the signals emitted by transmitting antenna are reflected on

Troposphere
Ozonosphere
Ionosphere
Stratosphere

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Physics
When an electric bulb breaks, there is an explosive sound. That is due to

The chemical reaction between the gases inside the bulb
None of these
The air outside rushing in to fill the vacuum inside the bulb
The compressed gases inside rushing out suddenly

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Physics
Pick out the scalar quantity

Acceleration
Force
Velocity
Pressure

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Physics
When heated from 0 to 100oC volume of a given mass of water will :

Increase and then will decrease
Decrease gradually
Increase gradually
Decrease and then will increase

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Physics
Woollen cloth protects the body from cold because

External heat rays enter into the body through the woollen cloth
It is a good conductor of heat
It is a poor conductor of heat
It reflects heat

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MORE MCQ ON Physics

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