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

00:00
Question # 1

The unit of decay constant is:

Question # 2

γ-rays are

Question # 3

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

Question # 4

Charge on proton is

Question # 5

The chemical properties of all the isotopes of an elements are

Question # 6

Rate of decay is actually described by.

Question # 7

The range of particle depends upon the factor

Question # 8

The counter, which also provides the power to the G.M. tube is called:

Question # 9

Mass of proton is

Question # 10

Which are not the elementary particles?

Question # 11

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 12

How much time, theα-particle more massive than an electron

Question # 13

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 14

In 1932 Chadwick discovered

Question # 15

Neutron was suggested to be in the nucleus by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
2 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
3 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
4 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
5 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
6 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
7 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
8 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
9 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
10 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these

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