Question # 1

What discovered radioactivity?

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Einstein

Newton

J.J. Thomson

Henry Becquerel

Operation " 2+3" in computer performed by.

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CU

CPU

ALU

None of these

Element having atomic numebr greater than.......... go on emitting radiations.

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80

92

82

83

Two American astronauts namely Neil Armstrong and Edwin Aldrin landed on the moon by:

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Apallo l

Apallo ll

Suptnik l

Sputnik ll

One Btu is equal to.

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1100 joules

1055 Joules

1050 Joules

1040 Joules

The Si unit of current is:

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Ohm

Ampere

Kilowatt

Coulomb

Who was the inventor of radio system.

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Grahm bell

F. Crick

Charles babbage

Marconi

Which of the following is an input device:

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key board

printer

monitor

CPU

English word "9" has been divided into ............ segments.

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5

6

7

8

Which circuits carry currents to the lights heaters and other appliances:

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parallel circuits

series circuits

common circuits

All of the above

The county which launched its first artificial satellite into space:

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France

British

America

Russia

----------------- rays are used to detect the flaws and crocks of metal parts.

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a -rays

gama rays

beta rays

None of these

SUPARCO came into being.

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In 1956

in 1961

in 1973

In 1990

If we increasing angle of incidence then at a particular angle incidence the angel of refraction is.

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45 ^o

60 ^o

30 ^o

90 ^o

Emission of ratiations from nucleus is said to be

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Chemical reaction

Atomic reaction

Radioactivity

Nuclear fission

1 m A is equal to.

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10^-3A

10^-6A

10^-2 A

10^-8A

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