Question # 1

Nuclear fission was first observed in

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1936

1937

1938

1939

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

an ideal voltmeter is that which draws:

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small current

no current

high current

none of these

The galvanometer has been named after the scientist:

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Lewis

Lowry bronsted

Luigi Galvano

Galvano Einstein

A thermistor is a dependent resistors:

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Heat

temperature

energy

mass

Which element is used to locate the ulcer in brain?

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Iodine-131

Phosphorus-32

Carbon-14

Potassium-40

When a uranium (92 protons) ejects a beta particle, how many protons are left in the remaining nucleus?

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92 protons

91 protons

93 protons

89 protons

in a dry cell, chemical energy changes into:

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mechanical energy

electrical energy

potential energy

kinetic energy

The value or current I passing through a conductor is inversely proportional to:

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Temperature

Potential difference

e.m.f.

resistance

Human skin, in dry conditions, has a resistance of:

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20,000 ohm

100,000 ohm

30,000 ohm

2000 ohm

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.

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