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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
Fraction of the decaying atoms per unit time is called
Question # 2
The total charge of any nucleus is given as
Question # 3
Electrons are
Question # 4
Nucleon means:
Question # 5
In his experiment on nuclear reactions, Rutherford bombardedα particles on:
Question # 6
Different radioactive material have
Question # 7
Neutron was discovered by
Question # 8
Mass of proton is of order of
Question # 9
Nucleus consists of
Question # 10
β-particles are easily deflected by collisions than heavy
Question # 11
Radium was discovered by:
Question # 12
The reciprocal of decay constant λ of a radioactive material is:
Question # 13
The number if neutrons in the nucleus of 92U235are
Question # 14
Radioactivity was discovered by
Question # 15
The number of isotopes of hydrogen are
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | 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
|
| 3 | Nucleus consists of |
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
|
| 4 | Referring to the above figure, the binding energy per nucleon increases upto mass number equal to: |
A. 50
B. 100
C. 150
D. 200
|
| 5 | γ-rays are |
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
|
| 6 | In wilson cloud chamber, the air becomes saturated with: |
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
|
| 7 | Radium was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
|
| 8 | γ-rays behave like a particle because they explain the |
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
|
| 9 | The chemical behaviour of an atom is determined by |
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
|
| 10 | The nuclei of an element having the same charge number but different mass numbers are called: |
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs