Question # 1

Joule’s law is W=

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IR/t

IRt²

IR²t

I²Rt

The half life of carbon -14 is:

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5730 years

5740 years

5750 years

5760 years

When 1 kg of Uranium -235 is fused then energy released is

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67 x 10¹⁰ J

67 x 10⁷J

67 J

7 J

Watt is equal to:

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Coulomb per second

Newton per second

Volt per second

Joule per second

The symbol of alpha particles is:

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4AHe

42He

0-1B

00Y

The number of neutrons in the nucleus of tritium is:

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1

2

3

4

When 1 tonne of coal is burnt then amount of energy is released .

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36 x 10⁸ J

36 x 10⁹J

36 J

36 x 10¹⁰J

The colour of live wire is:

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Black or blue

Green or yellow

White or grey

Red or brown

Which among the following radiation has more penetrating power?

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A beta pareticle

A gamma particle

An alpha particle

None of these

Nuclear fission was first observed in

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1936

1937

1938

1939

The reason carbon dating work is that.

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Plants and animals are such strong emitters of carbon 14

After a plant or animal dies, it stops in fresh carbon

There is so much non radioactive carbon dioxide in the air

When a plant or animal dies.

The symbol of atomic mass number is:

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A

X

N

Z

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