Physics GK 23 - Atomic and Nuclear Physics Basics

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1).
Which of the following is equivalent to 1 a.m.u?
2).
What of following is equivalent to 1 a.m.u?
3).
Which of the following element has an isotope named as Tritium?
4).
What do we call the atomic species of the same element differing in mass?
5).
Which of the following gives us the mass number of an atom?
6).
What do we call the nuclides having same mass number?
7).
What is Mass defect of a nucleus?
8).
Which of the following is correct?
9).
Which of the following is the name given to electrons moving at high speed?
10).
Which of the following is a limitation of Bohr's model of atom?
11).
What is the process which causes the elimination of one or more electrons from the atomic shell known as?
12).
What is the SI unit of radioactivity?
13).
Which of the following statements related to the unit curie (Ci) is correct?
14).
What is the source of energy in nuclear reactors which produce electricity?
15).
What is the fuel in the Sun?
16).
Which of the following nuclear processes is the source of energy output in the interior of stars?
17).
What are the nuclei of different atoms containing same number of neutrons known as?
18).
What is the energy equivalence of one atomic mass unit?
19).
What do we call the energy which should be supplied to the nucleus to break it up into its constituent particles?
20).
What do we call the phenomenon of spontaneous disintegration of the nucleus of an atom?
21).
Which of the following is correct?
22).
What is meant by Atomic number of an atom?
23).
Which of the following is a commonly used moderator in a Nuclear reactor?
24).
Which of the following material is commonly used to make control rods in a nuclear reactor?
25).
Which of these rays have the highest penetrating power?
26).
Which of these rays have the highest ionising power?
27).
Which of the following metal foils was used in the Rutherford's alpha particle scattering experiment?
28).
What is the value of Rydberg constant?
29).
Which of the following represents the angular momentum of an electron as per Bohr's model (h= Planck's constant)?
30).
What is the value of Planck’s constant?
1. Which of the following is equivalent to 1 a.m.u?
[A] 1/12th of the mass of the helium atom
[B] 1/12th of the mass of the hydrogen atom
[C] 1/12th of the mass of the oxygen atom
[D] 1/12th of the mass of the carbon atom
2. What of following is equivalent to 1 a.m.u?
[A] 1.660539 x 10-18 kg
[B] 1.660539 x 10-21 kg
[C] 1.660539 x 10-24 kg
[D] 1.660539 x 10-27 kg
3. Which of the following element has an isotope named as Tritium?
[A] Helium
[B] Carbon
[C] Titanium
[D] Hydrogen
4. What do we call the atomic species of the same element differing in mass?
[A] Isobars
[B] Isotopes
[C] Isomers
[D] Such species don’t exist
5. Which of the following gives us the mass number of an atom?
[A] total number of electrons
[B] total number of neutrons
[C] total number of nucleons
[D] None of the above
6. What do we call the nuclides having same mass number?
[A] Isotopes
[B] Isobars
[C] Isotones
[D] Such species don’t exist
7. What is Mass defect of a nucleus?
[A] difference between mass of a nucleus and its constituents
[B] sum of the mass of a nucleus and its constituents
[C] difference between mass of a neutron and mass of proton
[D] sum of mass of a neutron and mass of proton
8. Which of the following is correct?
[A] The nuclear force does not depend on the electric charge
[B] The nuclear force is much weaker than the Coulomb force
[C] Both a and b
[D] None of the above
9. Which of the following is the name given to electrons moving at high speed?
[A] Alpha particles
[B] Beta particles
[C] Gamma particles
[D] None
10. Which of the following is a limitation of Bohr’s model of atom?
[A] it does not explain why orbits of electrons are taken as circular
[B] it does not take into account the wave nature of electrons
[C] Both a and b
[D] None
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