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Online Tests
General Science 10th Class English Medium Chapter 9 Online Test MCQs With Answers
Question # 1
the number of (101)
10
in decimal is equal to .......... inbinary.
Choose an answer
0101111
0000101
10101101
1100101
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Question # 2
analogue signal is recorded on.
Choose an answer
Magnetic tape
Floppy disk
Hard Disk
C.D
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Question # 3
How many electrons Guns are used in colour T.V?
Choose an answer
One
Two
Three
Four
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Question # 4
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 # 5
Which of the following are electromagnetic waves:
Choose an answer
sound
water waves
Ultrasound
light
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Question # 6
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 # 7
In P-type semi -conductior, most of the current is due to.
Choose an answer
Free electron
Holes
Positive ions
Heat
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Question # 8
Revolutionary charges have occur in last ............. years.
Choose an answer
30
40
50
60
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Question # 9
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 # 10
The substances through which current con not pass are called:
Choose an answer
Semi - conductors
Insulators
conductors
non - metal
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Question # 11
Which of the following is an input device:
Choose an answer
key board
printer
monitor
CPU
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Question # 12
Word FAX is short form of.
Choose an answer
Facsiline
Facsimile
Fasimile
None of these
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Question # 13
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 # 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
The examples of semi - conductors:
Choose an answer
sodium and potassium
calcium and potassium
Germanium and silicon
carbon and nitrogen
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