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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 reciprocal of decay constant λ of a radioactive material is:
Question # 2
For Protium, the mass defect is:
Question # 3
The time required for a radioactive material to decrease in active by one half is called
Question # 4
Neutron was suggested to be in the nucleus by:
Question # 5
The rate of decay of a radioactive substance
Question # 6
The most abundant isotope of neon is
Question # 7
Alfa , beta and gamma rays are emitted from a radio-active substance
Question # 8
Three quarks make:
Question # 9
The number of isotopes of hydrogen are
Question # 10
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 # 11
Nucleon means:
Question # 12
U-238 present in the natural uranium is about:
Question # 13
Beta particles are
Question # 14
In his experiment on nuclear reactions, Rutherford bombardedα particles on:
Question # 15
Radiation detector are used to
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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 | An alpha particle has a charge of |
A. +2e
B. -2e
C. -e
D. +3e
|
| 3 | Heavy water is made of one oxygen atom and two atoms of: |
A. Protium
B. Deuterium
C. Tritium
D. Any of these
|
| 4 | Gamma rays consist of steam of |
A. electron
B. proton
C. photons
D. all of these
|
| 5 | Examples of moderators used in a fission reactor is/are: |
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
|
| 6 | 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
|
| 7 | The figure 1.007276μ shows the mass of an: |
A. Atom
B. Positron
C. Electron
D. Neutron
|
| 8 | The number if neutrons in the nucleus of 92U235are |
A. Infinite
B. 92
C. 235
D. 143
|
| 9 | The half lie of radium-226 is |
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
|
| 10 | The energy acquired by a mass of 1g moving with the speed of light is |
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs