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MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics
Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics
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Total Questions15
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Time Allowed20
ECAT Physics Chapter 21 Nuclear Physics
00:00
Question # 1
During the nuclear changes, the law/s of conservation that hold/s are that of:
Question # 2
Heavy water is made of one oxygen atom and two atoms of:
Question # 3
The emission of radiations take place in elements, having charge number greater than
Question # 4
γ-rays are
Question # 5
There is present in paraffin a large amount of:
Question # 6
The nucleus left after the emission of some radiation is called:
Question # 7
In radioactive decay, the new element which is formed due to the disintegration of original element is called
Question # 8
A curie represents a very strong source of
Question # 9
If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
Question # 10
Radiation detector are used to
Question # 11
The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
Question # 12
A pair of quark and antiquark makes a:
Question # 13
The chemical properties of an element depends upon the number of
Question # 14
The number of isotopes of hydrogen are
Question # 15
A mass spectrograph sort out
Prepare Complete Set Wise ECAT Physics Chapter 21 Nuclear Physics MCQs Online With Answers
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The rate of decay of radioactive substance |
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
|
| 2 | In his experiment on nuclear reactions, Rutherford bombardedα particles on: |
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
|
| 3 | The number of isotopes of hydrogen are |
A. 2
B. 1
C. 3
D. 4
|
| 4 | γ-rays are |
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
|
| 5 | Beta particles are |
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
|
| 6 | Examples of moderators used in a fission reactor is/are: |
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
|
| 7 | Radioactivity was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
|
| 8 | The chemical properties of an element depends upon the number of |
A. electron
B. position
C. photons
D. neutrons
|
| 9 | Fraction of the decaying atoms per unit time is called |
A. decay atom
B. decay element
C. decay constant
D. decay
|
| 10 | 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
|
Test Questions
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