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Online Tests
General Science 10th Class English Medium Chapter 9 Online Test MCQs With Answers
Question # 1
Which of the following is a brain of computer?
Choose an answer
Central processing unit
Mouse
Monitor
Hard disc
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Question # 2
The major function of electronic devices is to amplify the ........ signals.
Choose an answer
Stronge electric
Semi strong electric
Both a and c
weak electric
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Question # 3
Revolutionary charges have occur in last ............. years.
Choose an answer
30
40
50
60
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Question # 4
Which of the following are electromagnetic waves:
Choose an answer
sound
water waves
Ultrasound
light
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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
in binary system. 37 is written as.
Choose an answer
101101
100101
110011
101011
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Question # 7
The substances through which current con not pass are called:
Choose an answer
Semi - conductors
Insulators
conductors
non - metal
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Question # 8
analogue signal is recorded on.
Choose an answer
Magnetic tape
Floppy disk
Hard Disk
C.D
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Question # 9
How many electrons Guns are used in colour T.V?
Choose an answer
One
Two
Three
Four
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Question # 10
Digital singles are represented by;
Choose an answer
zero and 1
zero and 10
1 and 2
o and 9
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Question # 11
Electric signal is converted into digital signal by.
Choose an answer
Key board
Monitor
Scanner
Modem
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Question # 12
Diodes are used to.
Choose an answer
Convert A.C. into D.C
Convert D.C into A.C
Store Charge
Change voltage
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Question # 13
the number of (101)
10
in decimal is equal to .......... inbinary.
Choose an answer
0101111
0000101
10101101
1100101
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Question # 14
The substances through which current can pass easily are called:
Choose an answer
conductors
insulators
Semi - conductors
Non - Electrolytes
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Question # 15
Word FAX is short form of.
Choose an answer
Facsiline
Facsimile
Fasimile
None of these
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Question # 16
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 # 17
English word "9" has been divided into ............ segments.
Choose an answer
5
6
7
8
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Question # 18
Which of the following is an input device:
Choose an answer
key board
printer
monitor
CPU
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Question # 19
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 # 20
Operation " 2+3" in computer performed by.
Choose an answer
CU
CPU
ALU
None of these
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