Atomic And Nuclear Physics Hardest Quiz!
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What we have here is considered atomic and nuclear physics hardest quiz! A lot of people are confused about what makes atomic and nuclear physics is centered on. While one focuses on the atom the other focuses n protons and neutrons in the nucleus. Do you know the different types of energy and how they are obtained? The quiz below will be a perfect refresher for you. Do give it a try and see how well you do!
- 1.In the Geiger-Marsden experiment, α particles are scattered by gold nuclei. The experimental results indicate that most α particles are
- A.
Scattered only at small angles
- B.
Scattered only at large angles
- C.
Absorbed in the target
- D.
Scattered back along the original direction.
- 2.A sample of radioactive carbon-14 decays into a stable isotope of nitrogen. As the carbon-14 decays, the rate at which the amount of nitrogen is produced.
- A.
Decreases linearly with time
- B.
Increases linearly with time
- C.
Decreases exponentially with time
- D.
Increases exponentially with time
- 3.Which one of the following provides direct evidence for the existence of discrete energy levels in an atom?
- A.
The continuous spectrum of the light emitted by a white-hot metal
- B.
The line emission spectrum of a gas at low pressure
- C.
The emission of gamma radiation from radioactive atoms
- D.
The ionization of gas atoms when bombarded by alpha particles
- 4.A sample of material initially contains atoms of only one radioactive isotope. Which one of the following quantities are reduced to one half of its initial value during a time equal to the half-life of the radioactive isotope?
- A.
Total mass of the sample
- B.
Total number of atoms in the sample
- C.
Total number of nuclei in the sample
- D.
Activity of the radioactive isotope in the sample
- 5.In a fission chain reaction
- A.
Energy from one fission reaction causes further fission reactions
- B.
Nuclei produced in one fission reaction cause further fission reactions
- C.
Neutrons from one fission reaction cause further fission reactions
- D.
Gamma radiation produced in one fission reaction causes further fission reactions
- 6.Which one of the following correctly identifies the atomic (proton) number and mass (nucleon) number of a nucleus that has neutrons n and protons p? Atomic number Mass number A. p n B. p n + p C. n p D. n + p p
- A.
A
- B.
B
- C.
C
- D.
D
- 7.Isotopes provide evidence for the existence of
- A.
Protons
- B.
Electrons
- C.
Nuclei
- D.
Neutrons
- 8.An isotope of radium has a half-life of 4 days. A freshly prepared sample of this isotope contains N atoms. The time taken for 7N/8 of the atoms of this isotope to decay is
- A.
32 days
- B.
16 days
- C.
12 days
- D.
8 days
- 9.The presence of neutrons inside the nucleus is supported by the existence of
- A.
Isotopes
- B.
Orbiting electrons
- C.
Gamma radiation
- D.
Neutral atoms
- 10.The source of the Sun’s energy is
- A.
Fission
- B.
Radioactivity
- C.
Fusion
- D.
Ionization
- 11.The existence of isotopes provides evidence for the presence of
- A.
Electrons in atomic energy levels
- B.
Electrons in the nuclei of atoms
- C.
Neutrons in the nuclei of atoms
- D.
Protons in the nuclei of atoms
- 12.Ag-102, Ag-103, and Ag-104 are three isotopes of the element silver. Which one of the following is a true statement about the nuclei of these isotopes?
- A.
All have the same mass
- B.
All have the same number of nucleons
- C.
All have the same number of neutrons
- D.
All have the same number of protons
- 13.Radioactive decay is a random process. This means that
- A.
A radioactive sample will decay continuously
- B.
Some nuclei will decay faster than others
- C.
It cannot be predicted how much energy will be released
- D.
It cannot be predicted when a particular nucleus will decay
- 14.The number of nucleons in a nucleus is the number of
- A.
Particles in the nucleus
- B.
Neutrons in the nucleus
- C.
Protons in the nucleus
- D.
Protons plus neutrons in the nucleus
- 15.The emission and absorption spectra of different elements provides evidence for the existence of
- A.
Isotopes
- B.
Neutrons
- C.
Protons
- D.
Atomic energy levels
- 16.The nucleus of an atom contains protons. The protons are prevented from flying apart by
- A.
The presence of orbiting electrons
- B.
The presence of gravitational forces
- C.
The presence of strong attractive nuclear forces
- D.
The absence of Coulomb repulsive forces at nuclear distances
- 17.The unified mass unit is defined as the rest mass of
- A.
A proton
- B.
An atom of carbon-12 divided by 12
- C.
An atom of carbon-12
- D.
An atom of hydrogen-1
- 18.Which one of the following provides evidence for a nuclear model of the atom?
- A.
Natural radioactive decay
- B.
The ionizing properties of radiation
- C.
The stability of certain elements
- D.
The scattering of alpha particles by gold foil
- 19.The main source of the Sun’s energy is
- A.
Chemical reaction
- B.
Natural radioactivity
- C.
Nuclear fusion
- D.
Nuclear fission
- 20.Which of the following identifies the significant interaction(s) between nucleons inside the nucleus?
- A.
Nuclear only
- B.
Coulomb only
- C.
Nuclear and Coulomb
- D.
Gravitational, nuclear and Coulomb
- 21.A sample of a radioactive isotope of half-life T initially contains N atoms. Which one of the following gives the number of atoms of this isotope that have decayed after a time 3T?
- A.
N/8
- B.
N/3
- C.
2N/3
- D.
7N/8
- 22.Which one of the following correctly identifies the mass and momentum of a photon? Mass Momentum A. zero zero B. zero non-zero C. non-zero zero D. non-zero non-zero
- A.
A
- B.
B
- C.
C
- D.
D
- 23.Which of the following provides evidence for the existence of neutrons?
- A.
The Geiger-Marsden experiment
- B.
Isotopes
- C.
Natural radioactive decay
- D.
Artificial transmutations of elements
- 24.The atomic line spectra of elements provides evidence for the existence of
- A.
Photons
- B.
Electrons
- C.
Quantized energy states within nuclei
- D.
Quantized energy states within atoms
- 25.Which of the following provides evidence for the existence of atomic energy levels?
- A.
The absorption line spectra of gases
- B.
The existence of isotopes of elements
- C.
Energy release during fission reactions
- D.
The scattering of α -particles by a thin metal film
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