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

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 2

Neutron was suggested to be in the nucleus by:

Question # 3

The number of isotopes of hydrogen are

Question # 4

Rate of decay is actually described by.

Question # 5

The chemical properties of all the isotopes of an elements are

Question # 6

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 7

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 8

In 1932 Chadwick discovered

Question # 9

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 10

Different radioactive material have

Question # 11

Neutrons are

Question # 12

The number of protons inside a nucleus is called

Question # 13

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

Question # 14

After alpha decay the atomic number of the atom

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
2 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
3 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
4 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
5 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
6 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
7 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
8 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
9 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
10 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these

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