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MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
00:00
Question # 1
An alpha particle has a charge of
Question # 2
Proton was discovered by Rutherford in
Question # 3
Heavy water is made of one oxygen atom and two atoms of:
Question # 4
Radioactivity is
Question # 5
The energy acquired by a mass of 1g moving with the speed of light is
Question # 6
Neutron was discovered in
Question # 7
After alpha decay the atomic number of the atom
Question # 8
Electrons are
Question # 9
Examples of moderators used in a fission reactor is/are:
Question # 10
Which of these is not a radiation detector
Question # 11
The chemical properties of an element depends upon the number of
Question # 12
1 amu is equal to
Question # 13
If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
Question # 14
The diameter of an atom is of the order
Question # 15
The nuclei of an element having the same charge number but different mass numbers are called:
Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQs Online With Answers
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | According to Rutherford atomic model, the positive charge in an atom |
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
|
| 3 | 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
|
| 4 | The diameter of an atom is of the order |
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
|
| 5 | An alpha particle has a charge of |
A. +2e
B. -2e
C. -e
D. +3e
|
| 6 | γ-rays behave like a particle because they explain the |
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
|
| 7 | Radium was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
|
| 8 | Which are not the elementary particles? |
A. Photons
B. Leptons
C. Hadrons
D. Quarks
|
| 9 | Neutron was disvovered by: |
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
|
| 10 | Nuclei that have the same charge number but different mass number are called |
A. isotones
B. isomers
C. isotopes
D. isobars
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs