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
1 2
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