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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
The chemical properties of an element depends upon the number of
Question # 2
When certain nucleus emits aβ-particles, is mass number:
Question # 3
γ-rays are
Question # 4
When radioactive nucleus emits aβ-particle, the proton-neutron ratio
Question # 5
The figure 1.007276μ shows the mass of an:
Question # 6
According to Rutherford atomic model, the positive charge in an atom
Question # 7
Charge on neutron is
Question # 8
Neutron was disvovered by:
Question # 9
Alfa , beta and gamma rays are emitted from a radio-active substance
Question # 10
There is present in paraffin a large amount of:
Question # 11
The distance travelled byα-particle in a medium before coming to rest, is called
Question # 12
The total charge of any nucleus is given as
Question # 13
Phenomenon of radioactivity is due to disintegration of
Question # 14
An alpha particle has a charge of
Question # 15
Rutherford performed an experiment on nuclear reactions in:
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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 | Radioactivity |
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
|
| 3 | Mass of proton is |
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
|
| 4 | In 1932 Chadwick discovered |
A. proton
B. neutron
C. photon
D. electron
|
| 5 | A curie represents a very strong source of |
A. α-particle
B. β-particle
C. γ-particle
D. none of these
|
| 6 | The missing mass which is converted to energy in the formation of nucleus, is called |
A. packing fraction
B. mass defect
C. binding energy
D. none of these
|
| 7 | The unit of decay constant is |
A. sex
B. sec2
C. sec-1
D. sec-2
|
| 8 | The unit of decay constant is: |
A. Second
B. Metre
C. Hour
D. Year
|
| 9 | When thorium nucleus emits aβ-particle, the daughter nucleus is called: |
A. Protactinium
B. Actinium
C. Uranium
D. Radium
|
| 10 | The half life of radioactive substances depends upon |
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs