Question # 1

During the preparation of the juice of sugarcane is heated from:

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100°C to 110°C

100° to 120°

100°C to 130°C

100°C to 140°C

The country, whihc launched its artificial satellite into space for the first time is

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America

France

Russia

Pakistan

SUPARCO headquarter is in;

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Islamabad

Lahore

Karachi

Multan

Who was the inventor of radio system.

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Grahm bell

F. Crick

Charles babbage

Marconi

The production capacity of research reactor PARR - I is:

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10 megawatt

15 megawatt

20 megawatt

25 megawatt

What discovered radioactivity?

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Einstein

Newton

J.J. Thomson

Henry Becquerel

The Si unit of current is:

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Ohm

Ampere

Kilowatt

Coulomb

Digital singles are represented by;

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zero and 1

zero and 10

1 and 2

o and 9

The frequency of the carrier waver used of radio transmission:

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30 KHZ

40 KHZ

50 KHZ

60 KHZ

The conversion of the kinetic energy of running water to electrical energy is called

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power production

Thermal power

Hydroelectric power

Nuclear power

The Country which launched space station Mir into space:

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France

British

America

Russia

The elements used to increase the number of free electrons in the semi - conductor belong to:

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2^nd group

3^rd group

4^th group

5^th group

The country, whihc launched its artificial satellite into space for the first time is.

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America

France

Russia

Pakistan

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

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One

Two

Three

Four

When a ray of light passes from a denser to a rare medium it;

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bends away form the normal to the interface

bends towards the normal

does no bend

non of the above

The principal of light on whihc the fibre optics works is.

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Reflection

Refraction

Total internal reflection

Dispersion

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