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

Structure of the nucleus was explained by

Question # 2

Nucleus of a hydrogen atom may contain:

Question # 3

Charge on proton is

Question # 4

The unit of decay constant is

Question # 5

Radium was discovered by:

Question # 6

In 1932 Chadwick discovered

Question # 7

Curie is a unit of

Question # 8

In radio-active decay, the original element which disintegrate to another element is called

Question # 9

The range of particle depends upon the factor

Question # 10

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 11

Nucleon means:

Question # 12

The penetration power ofβ-particle is

Question # 13

The chemical properties of an element depends upon the number of

Question # 14

Binding energy per nucleus is

Question # 15

When a nucleus emits an alpha particles, its charge number decreases by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
2 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
3 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
4 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
5 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
6 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
7 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
8 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
9 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
10 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these

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