Question # 1

The types of quacks are.

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2

3

4

6

Electrons are

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Hadrons

Laptons

Quarks

Baryons

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

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6332

7332

8332

9332

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

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

The quantity of U in the naturally occurring uranium is.

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0.2%

0.3%

0.7%

0.4%

Hydrogen bomb is an example of.

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Nuclear fission

Nuclear fusion

Chain reaction

Chemical reaction

When nitrogen is bombarded by alpha particles nitrogen nucleus changes into

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Oxygen

Carbon

Barium

Helium

The most useful tracer is.

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Strontium -90

Iodine -31

Cobalt -60

Carbon -14

By emitting Beta particle and gama particle simultaneously the nucleolus changes in its charges by

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N

N/2

N/4

3N/4

Those elements whose charge number z is greater then __________ are unstable:

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80

79

82

83

1 amu is equal to

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1.0606 x 10^-27 kg

1.66 x 10^-31 kg

1.66 x 10^-34 kg

1.66 x 10^-19 kg

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

Which particle has larger range in air.

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Alpha rays

Gama rays

Beta rays

Neutron

The potential difference between the top and bottom of a cloud chamber is of the order of

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290 v

400 v

1 kv

None of above

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

The number of Isotopes of cesium are.

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4

32

22

36

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