Question # 1

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

The half of carbon 14 is

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5720 years

5730 years

5740 years

5750 years

Radiation was found in:

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1896

1895

1897

1898

One of the isotopes of uranium is²³⁸U₉₂the number of neutrons in the isotopes is.

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92

146

238

330

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

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Current

Power

Resistance

Both a and b

What type of graph is in between V and I, if metal obeys ohm’s law:

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Curved

Parabola

Straight line

None of these

the resistance of conductor is inversely to:

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temperature

length

area of cross section

pressure

The half life of carbon -14 is:

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5730 years

5740 years

5750 years

5760 years

A digital multimeter is used to measure:

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Current

Resistance

Potential difference

All of above

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

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20,000 ohm

100,000 ohm

30,000 ohm

2000 ohm

For observing how fast plants are absorbing phosphate fertilizer we use.

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I.131

Ph -32

Co-60

Ar-40

V²/R=:

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Power

Energy

Voltage

Resistance

Which element is used to locate the ulcer in brain?

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Iodine-131

Phosphorus-32

Carbon-14

Potassium-40

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