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

How much time, theα-particle more massive than an electron

Question # 2

Three quarks make:

Question # 3

The diameter of an atom is of the order

Question # 4

Different radioactive material have

Question # 5

Neutron was discovered by

Question # 6

When certain nucleus emits anα particle, its mass number:

Question # 7

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

Question # 8

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

Question # 9

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 10

Binding energy per nucleus is

Question # 11

The number of all the protons and neutrons in a nucleus is known as

Question # 12

According to Rutherford atomic model, the positive charge in an atom

Question # 13

The half life of uranium-238 is

Question # 14

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
2 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
3 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
4 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
5 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
6 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
7 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
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 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
10 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e

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