ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Charge on neutron is

Question # 2

Charge on proton is

Question # 3

For Protium, the mass defect is:

Question # 4

γ-rays behave like a particle because they explain the

Question # 5

Electrons are

Question # 6

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 7

According to Rutherford atomic model, the positive charge in an atom

Question # 8

The half lie of radium-226 is

Question # 9

Radiation detector are used to

Question # 10

The chemical properties of all the isotopes of an elements are

Question # 11

Which of the following material has smaller has life

Question # 12

The number if neutrons in the nucleus of 92U235are

Question # 13

Rutherford performed an experiment on nuclear reactions in:

Question # 14

The diameter of an atom is of the order

Question # 15

There is present in paraffin a large amount of:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
2 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
3 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
4 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
5 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
6 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
7 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
8 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
9 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
10 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above

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