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

Heavy water is made of one oxygen atom and two atoms of:

Question # 2

Binding energy per nucleus is

Question # 3

Three quarks make:

Question # 4

Neutron was discovered in

Question # 5

Neutron was disvovered by:

Question # 6

After alpha decay the atomic number of the atom

Question # 7

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 8

Which of the following material has longer half life

Question # 9

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 10

The unit of decay constant is:

Question # 11

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 12

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

Question # 13

Which of the following material has smaller has life

Question # 14

Mass of neutron is

Question # 15

Gamma rays consist of steam of

Question # 16

Marie curie and Pierre curie discovered:

Question # 17

Alfa particles are

Question # 18

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

Question # 19

The rate of decay of a radioactive substance

Question # 20

Curie is a unit of

Question # 21

Radioactivity was discovered by

Question # 22

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

Question # 23

Phenomenon of radioactivity is due to disintegration of

Question # 24

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

Question # 25

Charge on proton is

Question # 26

Charge on neutron is

Question # 27

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

Question # 28

The half lie of radium-226 is

Question # 29

The penetration power ofβ-particle is

Question # 30

A mass spectrograph sort out

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
2 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
3 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
4 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
5 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
6 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
7 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
8 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
9 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
10 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron

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