Question # 1

When nitrogen is bombarded by alpha particles nitrogen nucleus changes into

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Oxygen

Carbon

Barium

Helium

When a nucleus emits an alpha particle, its atomic mass decreases by

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1

2

3

4

James chadwick discovered:

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Proton

Positron

Neutron

Electron

What is difference is isotopes

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Number of protons

Number of neutrons

Number of electrons

Charge number

The moderator used in a nuclear reactor

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Sodium

Uranium

Graphite

Cadmium

The mass of proton in amu is:

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1.07276

1.7276

1.007276

1.0007276

Both Xenon and cesium have

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33 isotopes

34 Isotopes

36 Isotopes

35 Isotopes

The building blocks of protons and neutrons are called.

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Ions

Electrons

Positrons

quarks

A device that shows the visible path of ionizing particle is called.

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GM counter

Solid state detector

Scalar

Wilson cloud chamber

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

Which pair belongs to hadrons.

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Protons and Neutrons

Neutrons and electrons

Photons and electrons

positrons and electrons

Energy needed to produce an electron hole in solid state detector is.

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1 to 2 eV

3 to 4 eV

6 to 7 eV

8 to 9 eV

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

Curie is unit of.

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Conductivity

Binding energy

Radioactivity

Resistivity

Binding energy for deuteron nucleus is given by

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2.8 MeV

2.23 MeV

2.28 MeV

2.25 MeV

Low level radiations effects

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Less of hair

Ulceration

Drop of white blood cells

All

The binding energy per nucleon is maximum for

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Helium

Iron

Potassium

Radium

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

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Physics FSC Part 2 Chapter 21 Online MCQ's Test MCQs With Answers

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