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

Which of these is not a radiation detector

Question # 2

The range of particle depends upon the factor

Question # 3

The most abundant isotope of neon is

Question # 4

Neon gas have three isotopes whose atomic numbers are

Question # 5

A mass spectrograph sort out

Question # 6

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

Question # 7

When certain nucleus emits anα particle, its mass number:

Question # 8

Three quarks make:

Question # 9

Rutherford performed an experiment on nuclear reactions in:

Question # 10

Neutron was discovered in

Question # 11

Phenomenon of radioactivity is due to disintegration of

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

Proton was discovered by Rutherford in

Question # 14

The chemical properties of all the isotopes of an elements are

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
2 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
3 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
4 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
5 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these
6 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
7 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
8 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
9 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
10 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4

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