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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
Electrons are
Question # 2
Three quarks make:
Question # 3
In radio-active decay, the original element which disintegrate to another element is called
Question # 4
Nucleus of a hydrogen atom may contain:
Question # 5
A particle having the mass of electron and charge of a proton is called a
Question # 6
Examples of moderators used in a fission reactor is/are:
Question # 7
For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
Question # 8
The half life of radioactive substances depends upon
Question # 9
When a nucleus emits an alpha particle, it atomic mass decreased by
Question # 10
In radioactive decay, the new element which is formed due to the disintegration of original element is called
Question # 11
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 # 12
Charge on neutron is
Question # 13
The energy is found from Einstein's mass energy relation is called
Question # 14
If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
Question # 15
Neutron was discovered in
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is |
A. A - Z
B. A
C. Z
D. A + Z
|
| 2 | The nucleus/nuclei of hydrogen is/are: |
A. Proton
B. Deuteron
C. Triton
D. All of these
|
| 3 | When certain nucleus emits anα particle, its mass number: |
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
|
| 4 | Charge on neutron is |
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
|
| 5 | Three quarks make: |
A. An electron
B. A meson
C. A baryon
D. A photon
|
| 6 | 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
|
| 7 | For an atom having atomic number Z and atomic weight A, the charge on the nucleus is |
A. A - Z
B. A + Z
C. Z
D. A
|
| 8 | When a nucleus emits an alpha particle, it atomic mass decreased by |
A. 2
B. 1
C. 4
D. 3
|
| 9 | The range ofβ-particle in air is greater than that ofα-particle by |
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
|
| 10 | Radium was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs