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10th Class General Science Unit 11 Science Technology and Development English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
How many electrons Guns are used in colour T.V?
Choose an answer
One
Two
Three
Four
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Question # 2
Revolutionary charges have occur in last ............. years.
Choose an answer
30
40
50
60
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Question # 3
Purose of electron gun in TV is to.
Choose an answer
Fire electron
Receive electron
Consume electron
Display picture
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Question # 4
the number of (101)
10
in decimal is equal to .......... inbinary.
Choose an answer
0101111
0000101
10101101
1100101
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Question # 5
The deficiency of elctrons in outermost shell of silicon atom is called.
Choose an answer
Valent shell hole
Doping
Hole
None of these
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Question # 6
The numebr (100)16 in decimal is equal to............. in binary.
Choose an answer
1110100
01011101
1100100
1001001
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Question # 7
Word FAX is short form of.
Choose an answer
Facsiline
Facsimile
Fasimile
None of these
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Question # 8
Who was the inventor of radio system.
Choose an answer
Grahm bell
F. Crick
Charles babbage
Marconi
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Question # 9
Hovering satellite completes its rotation in 24 hours at the height of:
Choose an answer
360 km
3600 km
36000 km
360000 km
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Question # 10
The current flow from p-type semi conductors is due to.
Choose an answer
Free electrons
Valance electrons
Doping
Hole
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Question # 11
Operation " 2+3" in computer performed by.
Choose an answer
CU
CPU
ALU
None of these
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Question # 12
Word"Computer" is derive from.
Choose an answer
Machine
Calculator
Compute
All of these
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Question # 13
Which element is used to make LED?
Choose an answer
Aluminum
Calcium
sodium
Arsenic
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Question # 14
Which of the following is a brain of computer?
Choose an answer
Central processing unit
Mouse
Monitor
Hard disc
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Question # 15
Which of the following are electromagnetic waves:
Choose an answer
sound
water waves
Ultrasound
light
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