10th General Science MCQS Chapter 3

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10th Class General Science MCQS


Which element is used to make LED?
Aluminum
Arsenic
Calcium
sodium

Which of the following is a brain of computer?
Central processing unit
Mouse
Monitor
Hard disc

The speed of radio wave is:
Light
Rocket
Air
Sound

How many electrons Guns are used in colour T.V?
One
Two
Four
Three

Which of the following is used as rectifier;
capacitors
Germanium
semi – conductor diode
resistors
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