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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
Different radioactive material have
Question # 2
If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
Question # 3
The chemical behaviour of an atom is determined by
Question # 4
Mass of proton is of order of
Question # 5
The half life of radioactive substances depends upon
Question # 6
The number of all the protons and neutrons in a nucleus is known as
Question # 7
During the nuclear changes, the law/s of conservation that hold/s are that of:
Question # 8
Which are not the elementary particles?
Question # 9
The reciprocal of decay constant λ of a radioactive material is:
Question # 10
Neutron was suggested to be in the nucleus by:
Question # 11
Radioactivity was discovered by:
Question # 12
The number if neutrons in the nucleus of 92U235are
Question # 13
An alpha particle has a charge of
Question # 14
The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
Question # 15
When certain nucleus emits aβ-particles, is mass number:
Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQs Online With Answers
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M Muhammad Haseeb 25 - Nov - 2024 02 Min 17 Sec 40/60
ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Radium was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
|
| 2 | When a nucleus emits an alpha particle, it atomic mass decreased by |
A. 2
B. 1
C. 4
D. 3
|
| 3 | Referring to the above figure, we can say that of all the elements, the most stable element is |
A. Phosphours
B. Iron
C. uranium
D. Lithium
|
| 4 | Radiation detector are used to |
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
|
| 5 | The unit of decay constant is |
A. sex
B. sec2
C. sec-1
D. sec-2
|
| 6 | The diameter of an atom is of the order |
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
|
| 7 | Examples of moderators used in a fission reactor is/are: |
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
|
| 8 | The chemical behaviour of an atom is determined by |
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
|
| 9 | When a nucleus emits an alpha particles, its charge number decreases by |
A. 3
B. 2
C. 6
D. 5
|
| 10 | The figure 1.007276μ shows the mass of an: |
A. Atom
B. Positron
C. Electron
D. Neutron
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs