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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
Rate of decay is actually described by.
Question # 2
Rutherford performed an experiment on nuclear reactions in:
Question # 3
The unit of decay constant is
Question # 4
Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
Question # 5
The chemical properties of an element depends upon the number of
Question # 6
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 # 7
Structure of the nucleus was explained by
Question # 8
The most abundant isotope of neon is
Question # 9
If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
Question # 10
Marie curie and Pierre curie discovered:
Question # 11
The energy acquired by a mass of 1g moving with the speed of light is
Question # 12
The number of isotopes of hydrogen are
Question # 13
Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
Question # 14
Referring to the above figure, we can say that of all the elements, the most stable element is
Question # 15
The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A pair of quark and antiquark makes a: |
A. Meson
B. Baryon
C. Proton
D. Neutron
|
| 2 | 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
|
| 3 | When certain nucleus emits anα particle, its mass number: |
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
|
| 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 | Which are not the elementary particles? |
A. Photons
B. Leptons
C. Hadrons
D. Quarks
|
| 6 | Maric Curie and Pieree Curie discovered two new radioactive elements, which are called |
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
|
| 7 | A particle having the mass of electron and charge of a proton is called a |
A. photon
B. position
C. antiproton
D. antineutrino
|
| 8 | 1 amu is equal to. |
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
|
| 9 | The number of protons inside a nucleus is called |
A. mass number
B. atomic weight
C. atomic number
D. none of these
|
| 10 | During the nuclear changes, the law/s of conservation that hold/s are that of: |
A. Charge
B. energy
C. Momentum
D. Mass
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs