Question # 1

Which element is used for the monitoring of thyroid glands?

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Iodine- 131

Phosphorus-32

Carbon-14

Potassium-40

As the temperature of a conductor rises, its resistance:

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Increases

Decreases

Does not change

None of these

an additional wire used along with live and neutral wire is:

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cable wire

earth wire

grip wire

hot wire

When we double the voltage in a simple electric circuit, we double the:

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Current

Power

Resistance

Both a and b

Isotopes are atoms of same element with different :

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Atomic mass

Atomic Number

Number of proton

Number of Neutron

diamond des not conduct electricity, because it has no:

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free electrons

free protons

free neutrons

free positive charge

How Galvanometer is connected in circuit to detect current:

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In series

In parallel

Fixed

Variable

The half life of plutonium²³⁶Pu₉₄is:

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2.00 years

2.35 years

2.79 years

2.85 years

The half life of carbon -14 is:

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5730 years

5740 years

5750 years

5760 years

a fuse is connected in series with:

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neutral wire

live wire

earth wire

cable wire

Release of energy by the sun is due to

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Nuclear fission

Nuclear fusion

Burning of gases

Chemical reaction

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

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89 Protons

90 Protons

91 Protons

93 Protons

the resistance of conductor is inversely to:

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temperature

length

area of cross section

pressure

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