ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics

00:00
Question # 1

Neutrons are

Question # 2

Which of these is not a radiation detector

Question # 3

Phenomenon of radioactivity is due to disintegration of

Question # 4

Neon gas have three isotopes whose atomic numbers are

Question # 5

Mass of proton is

Question # 6

The chemical properties of all the isotopes of an elements are

Question # 7

In 1932 Chadwick discovered

Question # 8

Three quarks make:

Question # 9

Radioactivity was discovered by

Question # 10

Radioactivity

Question # 11

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 12

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

Question # 13

Structure of the nucleus was explained by

Question # 14

Nucleus of a hydrogen atom may contain:

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

A pair of quark and antiquark makes a:

Question # 19

When certain nucleus emits aβ-particles, is mass number:

Question # 20

Binding energy per nucleus is

Question # 21

Mass of neutron is

Question # 22

The figure 1.007276μ shows the mass of an:

Question # 23

The penetration power ofβ-particle is

Question # 24

The number of protons inside a nucleus is called

Question # 25

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 26

The unit of decay constant is

Question # 27

Mass of proton is of order of

Question # 28

U-238 present in the natural uranium is about:

Question # 29

When certain nucleus emits anα particle, its mass number:

Question # 30

Rate of decay is actually described by.

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
2 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
3 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
4 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
5 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
6 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
7 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
8 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
9 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
10 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen

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