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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
For Protium, the mass defect is:
Question # 2
Radium was discovered by:
Question # 3
When thorium nucleus emits aβ-particle, the daughter nucleus is called:
Question # 4
Rate of decay is actually described by.
Question # 5
When a nucleus emits an alpha particle, it atomic mass decreased by
Question # 6
When certain nucleus emits anα particle, its mass number:
Question # 7
A mass spectrograph sort out
Question # 8
Which of these is not a radiation detector
Question # 9
Which of the following material has longer half life
Question # 10
The isotope/s of hydrogen is /are:
Question # 11
An alpha particle has a charge of
Question # 12
A particle having the mass of electron and charge of a proton is called a
Question # 13
Neutrons are
Question # 14
The chemical properties of all the isotopes of an elements are
Question # 15
The number of all the protons and neutrons in a nucleus is known as
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by |
A. -4
B. 4
C. 2
D. 1
|
| 2 | In radio-active decay, the original element which disintegrate to another element is called |
A. element
B. daughter element
C. parent element
D. none of these
|
| 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 | For Protium, the mass defect is: |
A. Infinite
B. Zero
C. Very large
D. A few grams
|
| 5 | The number of protons inside a nucleus is called |
A. mass number
B. atomic weight
C. atomic number
D. none of these
|
| 6 | Alfa particles are |
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
|
| 7 | Examples of moderators used in a fission reactor is/are: |
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
|
| 8 | Charge on neutron is |
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
|
| 9 | Gamma rays consist of steam of |
A. electron
B. proton
C. photons
D. all of these
|
| 10 | The nucleus/nuclei of hydrogen is/are: |
A. Proton
B. Deuteron
C. Triton
D. All of these
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs