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

Charge on neutron is

Question # 2

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

Question # 3

The range of particle depends upon the factor

Question # 4

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

Question # 5

The figure 1.007276μ shows the mass of an:

Question # 6

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

Question # 7

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

Question # 8

The chemical behaviour of an atom is determined by

Question # 9

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

Question # 10

The unit of decay constant is

Question # 11

Neutron was discovered by

Question # 12

Neutron was discovered in

Question # 13

The energy is found from Einstein's mass energy relation is called

Question # 14

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 15

Curie is a unit of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
3 Nucleus of a hydrogen atom may contain:
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above
4 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
5 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
6 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
7 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
8 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
9 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
10 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen

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