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

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Question # 1

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

Question # 2

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

Question # 3

The total charge of any nucleus is given as

Question # 4

A mass spectrograph sort out

Question # 5

The number of protons inside a nucleus is called

Question # 6

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

Question # 7

Neutrons are

Question # 8

Rutherford performed an experiment on nuclear reactions in:

Question # 9

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

Question # 10

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 11

An alpha particle has a charge of

Question # 12

Mass of proton is

Question # 13

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

Question # 14

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

Question # 15

β-particles are easily deflected by collisions than heavy

Question # 16

Structure of the nucleus was explained by

Question # 17

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

Question # 18

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

Question # 19

The figure 1.007276μ shows the mass of an:

Question # 20

The amount of energy equivalent to 1 a.m.u is

Question # 21

Pair production take place when energy ofγ-rays photon is

Question # 22

Radium was discovered by:

Question # 23

The nucleus/nuclei of hydrogen is/are:

Question # 24

The unit of decay constant is

Question # 25

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

Question # 26

Which of these is not a radiation detector

Question # 27

Nuclei that have the same charge number but different mass number are called

Question # 28

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 29

Rate of decay is actually described by.

Question # 30

Alfa particles are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
2 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
3 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
4 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
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 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
7 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
8 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
9 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
10 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

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