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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
When thorium nucleus emits aβ-particle, the daughter nucleus is called:
Question # 2
The rate of decay of radioactive substance
Question # 3
The nucleus/nuclei of hydrogen is/are:
Question # 4
A pair of quark and antiquark makes a:
Question # 5
The most abundant isotope of neon is
Question # 6
Fraction of the decaying atoms per unit time is called
Question # 7
β-particles are easily deflected by collisions than heavy
Question # 8
The half lie of radium-226 is
Question # 9
When a charged particle passes through matter, it produces ionization, this effect is used in
Question # 10
Beta particles are
Question # 11
The amount of energy equivalent to 1 a.m.u is
Question # 12
Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
Question # 13
The chemical properties of an element depends upon the number of
Question # 14
Charge on neutron is
Question # 15
Curie is a unit of
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A mass difference of 0.0012 u is equivalent to and energy of: |
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
|
| 2 | Structure of the nucleus was explained by |
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
|
| 3 | γ-rays are |
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
|
| 4 | Which are not the elementary particles? |
A. Photons
B. Leptons
C. Hadrons
D. Quarks
|
| 5 | Rate of decay is actually described by. |
A. Half line
B. Decay constant
C. Mean life
D. Total life
|
| 6 | γ-rays behave like a particle because they explain the |
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
|
| 7 | The reciprocal of decay constant λ of a radioactive material is: |
A. Frequency
B. Half life
C. Year
D. Mean life
|
| 8 | Radioactivity was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
|
| 9 | The half lie of radium-226 is |
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
|
| 10 | The chemical properties of all the isotopes of an elements are |
A. same
B. different
C. slightly different
D. none of these
|
Test Questions