ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Three quarks make:

Question # 2

When certain nucleus emits anα particle, its mass number:

Question # 3

Mass of proton is

Question # 4

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 5

The total charge of any nucleus is given as

Question # 6

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

Question # 7

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

Question # 8

1 amu is equal to

Question # 9

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 10

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

Question # 11

The half life of radioactive substances depends upon

Question # 12

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 13

1 amu is equal to.

Question # 14

The chemical properties of an element depends upon the number of

Question # 15

An alpha particle has a charge of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
2 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
3 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
4 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
5 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
6 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
7 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
8 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
9 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
10 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons

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