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

The diameter of an atom is of the order

Question # 2

The range of particle depends upon the factor

Question # 3

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

Question # 4

Radioactivity

Question # 5

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

Question # 6

Proton was discovered by Rutherford in

Question # 7

For Protium, the mass defect is:

Question # 8

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

Question # 9

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

Question # 10

Mass of proton is of order of

Question # 11

Curie is a unit of

Question # 12

Radioactivity is

Question # 13

Marie curie and Pierre curie discovered:

Question # 14

The chemical behaviour of an atom is determined by

Question # 15

Nucleon means:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
2 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
3 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
4 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
5 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
6 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
7 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
8 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
9 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
10 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these

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