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Online Tests
10th Class General Science Unit 8 Biotechnology English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Which of the following is used as rectifier;
Choose an answer
semi - conductor diode
resistors
capacitors
Germanium
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Question # 2
Operation " 2+3" in computer performed by.
Choose an answer
CU
CPU
ALU
None of these
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Question # 3
Which disk consisting of metal plates for recording.
Choose an answer
Floopy
RAM
HARD
CD
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Question # 4
Revolutionary charges have occur in last ............. years.
Choose an answer
30
40
50
60
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Question # 5
The frequency of the carrier waver used of radio transmission:
Choose an answer
30 KHZ
40 KHZ
50 KHZ
60 KHZ
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Question # 6
in binary system. 37 is written as.
Choose an answer
101101
100101
110011
101011
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Question # 7
The number of hovering satellites which can send transmissions to all over the world:
Choose an answer
one
Two
Three
Four
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Question # 8
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 # 9
Who was the inventor of radio system.
Choose an answer
Grahm bell
F. Crick
Charles babbage
Marconi
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Question # 10
Which element is used to make LED?
Choose an answer
Aluminum
Calcium
sodium
Arsenic
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Question # 11
The elements used to increase the number of free electrons in the semi - conductor belong to:
Choose an answer
2
nd
group
3
rd
group
4
th
group
5
th
group
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Question # 12
Electric signal is converted into digital signal by.
Choose an answer
Key board
Monitor
Scanner
Modem
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Question # 13
How many electrons Guns are used in colour T.V?
Choose an answer
One
Two
Three
Four
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Question # 14
Which of the following is an input device:
Choose an answer
key board
printer
monitor
CPU
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Question # 15
Digital singles are represented by;
Choose an answer
zero and 1
zero and 10
1 and 2
o and 9
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