Question # 1

The numebr (100)16 in decimal is equal to............. in binary.

Choose an answer

1110100

01011101

1100100

1001001

Purose of electron gun in TV is to.

Choose an answer

Fire electron

Receive electron

Consume electron

Display picture

The speed of radio wave is:

Choose an answer

Light

Air

Sound

Rocket

The substances through which current can pass easily are called:

Choose an answer

conductors

insulators

Semi - conductors

Non - Electrolytes

The deficiency of elctrons in outermost shell of silicon atom is called.

Choose an answer

Valent shell hole

Doping

Hole

None of these

Electric signal is converted into digital signal by.

Choose an answer

Key board

Monitor

Scanner

Modem

Which element is used to make LED?

Choose an answer

Aluminum

Calcium

sodium

Arsenic

In Pure -semi conductors no free electrons are available to conduct electric current at.

Choose an answer

Ordinary temperature

Low temperature

High temperature

None of these

Digital singles are represented by;

Choose an answer

zero and 1

zero and 10

1 and 2

o and 9

The number of hovering satellites which can send transmissions to all over the world:

Choose an answer

one

Two

Three

Four

In P-type semi -conductior, most of the current is due to.

Choose an answer

Free electron

Holes

Positive ions

Heat

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

Revolutionary charges have occur in last ............. years.

Choose an answer

30

40

50

60

The substances through which current con not pass are called:

Choose an answer

Semi - conductors

Insulators

conductors

non - metal

How many electrons Guns are used in colour T.V?

Choose an answer

One

Two

Three

Four

More Classes

Other Links

General Science 10th Class English Medium Chapter 9 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer