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

Nucleus consists of

Question # 2

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 3

The range of particle depends upon the factor

Question # 4

The penetration power ofβ-particle is

Question # 5

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

Question # 6

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

Question # 7

A mass spectrograph sort out

Question # 8

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

Question # 9

Rate of decay is actually described by.

Question # 10

Marie curie and Pierre curie discovered:

Question # 11

The diameter of an atom is of the order

Question # 12

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 # 13

Which are not the elementary particles?

Question # 14

The nucleus/nuclei of hydrogen is/are:

Question # 15

Which of these is not a radiation detector

Question # 16

The chemical properties of all the isotopes of an elements are

Question # 17

Neutron was suggested to be in the nucleus by:

Question # 18

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

Question # 19

The emission of radiations take place in elements, having charge number greater than

Question # 20

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 21

A pair of quark and antiquark makes a:

Question # 22

The chemical behaviour of an atom is determined by

Question # 23

The reciprocal of decay constant λ of a radioactive material is:

Question # 24

The number of isotopes of hydrogen are

Question # 25

How many isotopes of helium are present?

Question # 26

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

Question # 27

Gamma rays consist of steam of

Question # 28

The rate of decay of a radioactive substance

Question # 29

Mass of proton is of order of

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
2 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
3 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
4 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
5 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
6 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
7 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
8 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
9 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
10 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932

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