Question # 1

The radio active nuclide ₈₆Ra²²⁸ decays by a series of emissions of three alpha particles and one beta particle. The nuclide X finally formed is:

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₆₄X²²⁰

₈₆X²²²

₈₄X²¹⁶

₈₈X²¹⁵

How many times, the alpha particle is more massive than electrons.

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6332

7332

8332

9332

The mass spectrum of naturally occurring neon shows the most abundant isotope has atomic mass.

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19

20

21

22

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

Nuclear fission chain reaction is controlled by using.

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Cadmium rods

Iron rods

Platinum rods

Steel rods

Iodine -131 is used for the treatment by

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Bones

Eyes

thyroid glands

Lungs

Binding energy for deuteron nucleus is given by

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2.8 MeV

2.23 MeV

2.28 MeV

2.25 MeV

The radioactive decay obeys the law

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In nuclear radiation , track of alpha particle is.

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Thin

Discontinuous

Erratic

Continuous

The amount of energy equivalent to 1 a.m.u is

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931.5 MeV

93.15 MeV

9.315 MeV

2.224 MeV

Which pair belongs to hadrons.

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Protons and Neutrons

Neutrons and electrons

Photons and electrons

positrons and electrons

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

Marie Curie and Pierre Curie discovered.

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Uranium

Uranium and Radium

Polonium and radium

Radium

The force which is responsible for the breaking up of the radioactive element is.

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Weak nuclear force

Strong nuclear force

Electromagnetic force

Gravitational force

The energy of photon for photoelectric effect is less than

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1 MeV

2 MeV

5 MeV

8 MeV

The particles which do not experience strong force are called.

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Baryons

Hadrons

Mesons

Laptons

The activity of radioactive sample

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Is constant

Increases with time

Decreases linearly with time

Decreases exponentially with time

The binding energy for_________ is maximum.

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Copper

Glass

Iron

Aluminum

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