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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
In radio-active decay, the original element which disintegrate to another element is called
Question # 2
Binding energy per nucleus is
Question # 3
Gamma rays consist of steam of
Question # 4
An alpha particle has a charge of
Question # 5
The nuclei of an element having the same charge number but different mass numbers are called:
Question # 6
When a nucleus emits an alpha particle, it atomic mass decreased by
Question # 7
Neon gas have three isotopes whose atomic numbers are
Question # 8
Alfa particles are
Question # 9
The reciprocal of decay constant λ of a radioactive material is:
Question # 10
The rate of decay of a radioactive substance
Question # 11
Radioactivity was discovered by:
Question # 12
Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
Question # 13
According to Rutherford atomic model, the positive charge in an atom
Question # 14
Mass of proton is
Question # 15
A curie represents a very strong source of
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A mass spectrograph sort out |
A. molecules
B. atoms
C. elements
D. isotopes
|
| 2 | Neutrons are |
A. positive charge
B. negatively charged
C. massless
D. neutral
|
| 3 | γ-rays are |
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
|
| 4 | U-238 present in the natural uranium is about: |
A. 59%
B. 0.007%
C. 99%
D. 39%
|
| 5 | If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be |
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
|
| 6 | Binding energy per nucleus is |
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
|
| 7 | The nucleus/nuclei of hydrogen is/are: |
A. Proton
B. Deuteron
C. Triton
D. All of these
|
| 8 | Neutron was discovered by |
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
|
| 9 | Neutron was discovered in |
A. 1915
B. 1920
C. 1925
D. 1932
|
| 10 | When radioactive nucleus emits aβ-particle, the proton-neutron ratio |
A. decrease
B. increase
C. same
D. none of these
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs