50+ NEET MCQ Questions Nuclei with Solutions

Here we will provide you the 50+ MCQ Questions of Nuclei for NEET-UG. Nuclei is the chapter 12 in Class XII or Class 12 Physics NCERT Unit Nuclei NEET (conducted by NTA) is based on the NCERT book.

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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Nuclei NEET MCQ Questions with Answers.

Nuclei NEET MCQ


Which of the following is not a factor that affects the stability of a nucleus?
a) The number of protons
b) The number of neutrons
c) The spin of the nucleus
d) The energy of the nucleus

Answer: d) The energy of the nucleus

What is the nuclear radius of an alpha particle?
a) 1 femtometer
b) 1 picometer
c) 1 nanometer
d) 1 micrometer

Answer: a) 1 femtometer

What is the approximate mass of a neutron in kilograms?
a) 1.67 x 10^-27 kg
b) 1.67 x 10^-24 kg
c) 1.67 x 10^-23 kg
d) 1.67 x 10^-22 kg

Answer: a) 1.67 x 10^-27 kg

What is the energy released in the fusion of two deuterium nuclei to form helium-4?
a) 3.2 MeV
b) 4.4 MeV
c) 17.6 MeV
d) 22.4 MeV

Answer: d) 22.4 MeV

What is the mass defect of an atom with a mass number of 238 and an atomic number of 92?
a) 2.55 amu
b) 5.45 amu
c) 8.45 amu
d) 9.45 amu

Answer: c) 8.45 amu

Which of the following is a fundamental force that acts within the nucleus?
a) Gravity
b) Electromagnetic force
c) Strong nuclear force
d) Weak nuclear force

Answer: c) Strong nuclear force

What is the half-life of a radioactive substance that decays with a rate constant of 0.025 per year?
a) 5.5 years
b) 27.6 years
c) 69.3 years
d) 138.6 years

Answer: b) 27.6 years

What is the energy equivalent of 1 amu?
a) 931.5 keV
b) 931.5 MeV
c) 931.5 GeV
d) 931.5 TeV

Answer: b) 931.5 MeV

What is the nuclear force that holds protons and neutrons together in the nucleus?
a) Gravity
b) Electromagnetic force
c) Strong nuclear force
d) Weak nuclear force

Answer: c) Strong nuclear force

What is the principle behind the working of a nuclear reactor?
a) Controlled nuclear fusion
b) Controlled nuclear fission
c) Uncontrolled nuclear fusion
d) Uncontrolled nuclear fission

Answer: b) Controlled nuclear fission


Which of the following is a radioactive isotope used in medical imaging?
a) Carbon-14
b) Uranium-235
c) Cobalt-60
d) Iron-56

Answer: c) Cobalt-60

What is the maximum number of electrons that can occupy an energy level with n = 3?
a) 2
b) 8
c) 18
d) 32

Answer: c) 18

What is the nuclear radius of a proton?
a) 0.1 femtometer
b) 1 femtometer
c) 10 femtometers
d) 100 femtometers

Answer: a) 0.1 femtometer

What is the energy released in the beta decay of tritium to helium-3?
a) 0.0186 MeV
b) 0.0493 MeV
c) 0.262 MeV
d) 0.546 MeV

Answer: b) 0.0493 MeV

What is the mass defect of an atom with a mass number of 235 and an atomic number of 92?
a) 1.63 amu
b) 4.81 amu
c) 7.05 amu
d) 9.32 amu

Answer: b) 4.81 amu

Which of the following is a type of nuclear reaction that involves the combination of atomic nuclei?
a) Fission
b) Fusion
c) Decay
d) Emission

Answer: b) Fusion

What is the half-life of a radioactive substance that has decayed to 1/8 of its original amount?
a) 1 half-life
b) 2 half-lives
c) 3 half-lives
d) 4 half-lives

Answer: c) 3 half-lives

What is the binding energy per nucleon of an atom with a mass number of 56?
a) 7.92 MeV
b) 8.52 MeV
c) 9.12 MeV
d) 9.72 MeV

Answer: d) 9.72 MeV

What is the principle behind the working of a nuclear bomb?
a) Controlled nuclear fusion
b) Controlled nuclear fission
c) Uncontrolled nuclear fusion
d) Uncontrolled nuclear fission

Answer: d) Uncontrolled nuclear fission

What is the most common type of beta decay?
a) Beta-minus decay
b) Beta-plus decay
c) Electron capture
d) Gamma decay

Answer: a) Beta-minus decay


What is the minimum energy required to separate a proton and a neutron from the nucleus of an atom?
a) Binding energy
b) Coulomb energy
c) Nuclear energy
d) Threshold energy

Answer: d) Threshold energy

What is the product of the alpha decay of radium-226?
a) Thorium-230
b) Radon-222
c) Polonium-218
d) Lead-214

Answer: b) Radon-222

What is the half-life of a radioactive isotope that decays with a rate constant of 0.015 min^-1?
a) 20 min
b) 46 min
c) 69 min
d) 115 min

Answer: b) 46 min

Which of the following particles has the highest penetrating power?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons

Answer: c) Gamma rays

What is the principle behind the functioning of a nuclear reactor?
a) Controlled nuclear fusion
b) Controlled nuclear fission
c) Uncontrolled nuclear fusion
d) Uncontrolled nuclear fission

Answer: b) Controlled nuclear fission

Which of the following isotopes is commonly used in nuclear weapons?
a) Uranium-235
b) Uranium-238
c) Plutonium-239
d) Plutonium-240

Answer: c) Plutonium-239

What is the mass of a helium nucleus?
a) 1 atomic mass unit (amu)
b) 2 amu
c) 4 amu
d) 8 amu

Answer: c) 4 amu

What is the energy released in the fusion of deuterium and tritium to form helium-4?
a) 0.0175 MeV
b) 17.5 MeV
c) 175 MeV
d) 1.75 GeV

Answer: c) 175 MeV

What is the ratio of the radii of two nuclei with the same number of protons, but with mass numbers in the ratio 2:3?
a) 2:3
b) 3:2
c) 4:9
d) 9:4

Answer: b) 3:2

Which of the following particles is emitted in the process of alpha decay?
a) An electron
b) A positron
c) A proton
d) A helium nucleus

Answer: d) A helium nucleus

We hope there NEET MCQ of Class 12 Nuclei will help you to score an excellent rank in NEET-UG. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.

Sneha

Master's in Biology, Skilled in vocational training. Strong Analytical and creative knowledge.

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