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

Rutherford performed an experiment on nuclear reactions in:

Question # 2

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

Question # 3

Pair production take place when energy ofγ-rays photon is

Question # 4

Which of the following material has longer half life

Question # 5

A particle having the mass of electron and charge of a proton is called a

Question # 6

The time required for a radioactive material to decrease in active by one half is called

Question # 7

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

Question # 8

How many isotopes of helium are present?

Question # 9

Charge on neutron is

Question # 10

The number of protons inside a nucleus is called

Question # 11

In 1932 Chadwick discovered

Question # 12

The range of particle depends upon the factor

Question # 13

γ-rays behave like a particle because they explain the

Question # 14

Phenomenon of radioactivity is due to disintegration of

Question # 15

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

Question # 16

Charge on proton is

Question # 17

The range ofβ-particle in air is greater than that ofα-particle by

Question # 18

A curie represents a very strong source of

Question # 19

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

Question # 20

A mass spectrograph sort out

Question # 21

After alpha decay the atomic number of the atom

Question # 22

The number of isotopes of hydrogen are

Question # 23

Radioactivity

Question # 24

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

Question # 25

The nucleus/nuclei of hydrogen is/are:

Question # 26

Neutron was suggested to be in the nucleus by:

Question # 27

The chemical properties of all the isotopes of an elements are

Question # 28

Neon gas have three isotopes whose atomic numbers are

Question # 29

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 30

The rate of decay of radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
2 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
3 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
4 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
5 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
6 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
7 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
8 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
9 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
10 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C

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