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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
For Protium, the mass defect is:
Question # 3
Radium was discovered by:
Question # 4
Fraction of the decaying atoms per unit time is called
Question # 5
Three quarks make:
Question # 6
Nucleon means:
Question # 7
The chemical behaviour of an atom is determined by
Question # 8
The energy acquired by a mass of 1g moving with the speed of light is
Question # 9
A pair of quark and antiquark makes a:
Question # 10
Nuclei that have the same charge number but different mass number are called
Question # 11
When radioactive nucleus emits aβ-particle, the proton-neutron ratio
Question # 12
In radioactive decay, the new element which is formed due to the disintegration of original element is called
Question # 13
According to Rutherford atomic model, the positive charge in an atom
Question # 14
Referring to the above figure, we can say that of all the elements, the most stable element is
Question # 15
The most abundant isotope of neon is
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Alfa particles are |
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
|
| 2 | Radioactivity was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
|
| 3 | When a nucleus emits an alpha particle, it atomic mass decreased by |
A. 2
B. 1
C. 4
D. 3
|
| 4 | 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
|
| 5 | 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
|
| 6 | An alpha particle has a charge of |
A. +2e
B. -2e
C. -e
D. +3e
|
| 7 | Radioactivity is |
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
|
| 8 | Rutherford performed an experiment on nuclear reactions in: |
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
|
| 9 | Heavy water is made of one oxygen atom and two atoms of: |
A. Protium
B. Deuterium
C. Tritium
D. Any 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