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Class 12 Physics
Nuclei Chapter 13
Quiz 1
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The nuclide has all the following except
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92 protons
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146 neutrons
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238 nucleons
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92 electrons
Which one of the following statements about the atomic nucleus is accurate?
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The nucleus is held together mostly by the electrical and gravitational forces
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Large nuclei are denser than light nuclei
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All nuclei have nearly the same density
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Smaller nuclei are denser than larger nuclei
Nucleus ''a'' contains 5 protons and 5 neutrons and has radius R. The radius of nucleus ''b'', which contains 35 protons and 45 neutrons, is closest to:
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2R
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8R
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1.4R
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R
Binding energy per nucleon is the ratio of
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the binding energy of the nucleus to the number of nucleons in that nucleus.
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energy required to remove a nucleon to atomic weight
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binding energy of a nucleon to the atomic number
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binding energy of a nucleus to the atomic number
The atomic number Z of the nucleus is
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Number of deutrons.
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Number of neutrons in it.
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Number if electrons in it.
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Number of protons in it.
The density of nuclear matter is:
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independent of the number of nucleons in the nucleus
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directly proportional to the number of neutrons in the nucleus
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directly proportional to the number of protons in the nucleus
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directly proportional to the square of the number of nucleons in the nucleus
The radius of a nucleus is directly proportional to (A=mass number)
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A1/3
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A2
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A3
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A1/2
The volume of atom in comparison of volume of nucleus is of the order of
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1015
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105
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1025
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1030
The average binding energy of nucleus is
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8 BeV
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8 Mev
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8 eV
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8 KeV
The number of electrons in an atom X of atomic number Z and mass number A is
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Zero
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A
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Z
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A-Z
0 h : 0 m : 1 s
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