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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
Alfa particles are
Question # 3
Rutherford performed an experiment on nuclear reactions in:
Question # 4
U-238 present in the natural uranium is about:
Question # 5
β-particles are easily deflected by collisions than heavy
Question # 6
Gamma rays consist of steam of
Question # 7
The rate of decay of radioactive substance
Question # 8
Rate of decay is actually described by.
Question # 9
The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
Question # 10
Mass of proton is of order of
Question # 11
The range ofβ-particle in air is greater than that ofα-particle by
Question # 12
Radioactivity is
Question # 13
Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
Question # 14
Curie is a unit of
Question # 15
The half life of radioactive substances depends upon
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The half life of radioactive substances depends upon |
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
|
| 2 | Electrons are |
A. positive charged
B. negatively charged
C. massless
D. neutral
|
| 3 | Which are not the elementary particles? |
A. Photons
B. Leptons
C. Hadrons
D. Quarks
|
| 4 | The nucleus left after the emission of some radiation is called: |
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
|
| 5 | γ-rays behave like a particle because they explain the |
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
|
| 6 | The energy is found from Einstein's mass energy relation is called |
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
|
| 7 | The total charge of any nucleus is given as |
A. Ze2
B. Z2e
C. Z/e
D. Ze
|
| 8 | In radioactive decay, the new element which is formed due to the disintegration of original element is called |
A. element
B. daughter element
C. parent element
D. none of these
|
| 9 | When radioactive nucleus emits aβ-particle, the proton-neutron ratio |
A. decrease
B. increase
C. same
D. none of these
|
| 10 | The rate of decay of a radioactive substance |
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs