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NEET UG Nuclei — practice questions — page 2

Explore 102 free Nuclei questions in NEET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Nuclei questions and exercises with answers

Showing questions 31–60 of 102.

Radioactivity is a decay undergone by a nucleus that is:Read the answer and worked solution →How many types of radioactive decay occur in nature?Read the answer and worked solution →In beta decay, which particles may be emitted?Read the answer and worked solution →A positron has the same mass as an electron but a charge that is:Read the answer and worked solution →In gamma decay, what is emitted?Read the answer and worked solution →Match each decay to what it emitsRead the answer and worked solution →True or false about the nucleusRead the answer and worked solution →Sort each item by what it concernsRead the answer and worked solution →Fill the gaps on the nucleusRead the answer and worked solution →Charged particle, or no charge?Read the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →Order the reasoning to binding energyRead the answer and worked solution →Pick the right answer, quicklyRead the answer and worked solution →By roughly what factor is a nucleus's radius smaller than an atom's?Read the answer and worked solution →The volume of a nucleus is about what fraction of the atom's volume?Read the answer and worked solution →What share of an atom's mass is held in its nucleus?Read the answer and worked solution →One atomic mass unit is defined as what?Read the answer and worked solution →What is the value of one atomic mass unit in kilograms?Read the answer and worked solution →Chlorine has isotopes of 34.98 u (75.4%) and 36.98 u (24.6%). What is its average atomic mass?Read the answer and worked solution →The word isotope comes from Greek for what?Read the answer and worked solution →Why is tritium produced artificially in laboratories?Read the answer and worked solution →What is the mass of a proton in atomic mass units?Read the answer and worked solution →Who discovered the neutron in 1932?Read the answer and worked solution →Chadwick found neutrons by bombarding which element with alpha particles?Read the answer and worked solution →In which year did Chadwick receive the Nobel Prize for discovering the neutron?Read the answer and worked solution →About how long is the mean life of a free neutron?Read the answer and worked solution →A free neutron decays into which set of particles?Read the answer and worked solution →How many neutrons are in a gold-197 nucleus with atomic number 79?Read the answer and worked solution →Mercury-198 (Z = 80) and gold-197 (Z = 79) are an example of what?Read the answer and worked solution →Why do isotopes of an element behave identically in chemistry?Read the answer and worked solution →

Worked practice questions

Radioactivity is a decay undergone by a nucleus that is:

  1. Unmoving
  2. Unmixed
  3. Unstable
  4. Unusual
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Correct answer: C. Unstable

1. Stable nuclei do not decay. 2. The process is called radioactive decay. 3. The nucleus is unstable. _Source: syllabus Physics, Ch 13 'Nuclei'_

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How many types of radioactive decay occur in nature?

  1. Seven
  2. Eight
  3. Nine
  4. Three
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Correct answer: D. Three

1. Alpha and beta are two of them. 2. Gamma emission is the third. 3. There are three types. _Source: syllabus Physics, Ch 13 'Nuclei'_

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In beta decay, which particles may be emitted?

  1. Emissions
  2. Electrons
  3. Elements
  4. Emulsions
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Correct answer: B. Electrons

1. Positrons may also be emitted. 2. A positron has the electron's mass but opposite charge. 3. Electrons are emitted. _Source: syllabus Physics, Ch 13 'Nuclei'_

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