ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

00:00
Question # 1

Examples of moderators used in a fission reactor is/are:

Question # 2

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 3

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

Question # 4

The isotope/s of hydrogen is /are:

Question # 5

Pair production take place when energy ofγ-rays photon is

Question # 6

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 7

Mass of neutron is

Question # 8

Neutron was discovered by

Question # 9

The number of protons inside a nucleus is called

Question # 10

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 11

The half lie of radium-226 is

Question # 12

The total charge of any nucleus is given as

Question # 13

The nucleus left after the emission of some radiation is called:

Question # 14

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
2 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
3 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
4 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
5 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
6 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
7 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
8 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
9 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
10 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window

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