Question # 1

Two up quarks and one down quarks makes a

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Proton

Newton

Photon

Meson

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

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19

20

21

22

Mass of meason is

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Greater then proton

Less than proton

Equal to proton

Equal to neutron

When a nucleus emits alpha particle its atomic mass decreases by

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1

2

3

4

The Unit of decay constant.

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Second

(second)-1

m-1

mk

1 gray is equal to.

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1 JKg-1

1KgJ-1

1JKg

1 JKg-2

I amu =

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9.31 MeV

931 MeV

9.031 MeV

None of above

Electrons are

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Hadrons

Laptons

Quarks

Baryons

Binding energy per nucleus for uranium is above:

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6.7 Mev

7.7 Mev

6.9 MeV

7.9 MeV

The mass spectrum of naturally occurring neon, showing

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1 isotope

2 isotope

3 isotope

4 isotope

The activity of radioactive sample

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Is constant

Increases with time

Decreases linearly with time

Decreases exponentially with time

Iodine -131 is used for the treatment by

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Bones

Eyes

thyroid glands

Lungs

Which of the following basic force is able to provide an attraction between two neutrons:

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Electrostatic and nuclear b

Electrostatic and gravitational

Gravitational and strong nuclear

Only nuclear force

Which particle has larger range in air.

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Alpha rays

Gama rays

Beta rays

Neutron

A positron is a particle having.

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Mass equal to electron

Charge equal to electron

Mass equal to mass of electron but charge opposite to charge of electron.

Mass equal to proton

Which one of the following is not affected by electric or magnetic field.

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Beta rays

Gama ryas

Alpha rays

Electron

Number of Isotopes of Neon gas are

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2

3

4

1

X -rays are similar in nature to.

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Gama rays

Beta rays

Alpha rays

Cathode rays

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