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Nuclei Questions

Practice 12 Nuclei questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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12
Total Questions
๐ŸŸข
5
Easy
๐ŸŸก
5
Medium
๐Ÿ”ด
2
Hard
Practice by Exam:Physics(11)PHYSICS(1)

About nuclei โ€” practice questions, PYQs & concepts

nuclei is a frequently-tested topic on Physics, PHYSICS. ExamTest.live currently lists 12 nuclei questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year โ€” every answer key is free, no sign-up required.

nuclei weight in competitive exams

Across our nuclei question bank, the largest sources are Physics (11) and PHYSICS (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 5 easy nuclei questions are available โ€” build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right โ€” the explanation often surfaces a faster approach you can reuse.

All Nuclei Questions(1โ€“12 of 12)

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Q1hardmcqPhysicsNEET (UG) 20172026
0% accuracy
Radioactive material 'A' has decay constant ' ' and material 'B' has decay constant ' '. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material 'B' to that 'A' will be ?
Q2easymcqPhysicsNEET 20192026
0% accuracy
-particle consists of:
Q3easymcqPhysicsNEET (UG) 20182026
For a radioactive material, half-life is minutes. If initially there are number of nuclei, the time taken (in minutes) for the disintegration of nuclei is:
Q4mediummcqPHYSICSNEET 20192026
The rate of radioactive disintegration at an instant for a radioactive sample of half-life is . The number of radioactive atoms in that sample at that instant is:
Q5easymcqPhysicsNEET 2020 E12026
The energy equivalent of of a substance is:
Q6easymcqPhysicsNEET 2020 E12026
When a uranium isotope is bombarded with a neutron, it generates , three neutrons and:
Q7mediummcqPhysicsPhysics
A radioactive material has a half-life of . What fraction of the material would remain after ?
Q8mediummcqPhysicsPhysics
The binding energy of deuteron is and that of is . If two deuterons are fused to form one , then the energy released is:
Q9mediummcqPhysicsPhysics
In a radioactive material, the activity at time is and at a later time , it is . If the decay constant of the material is , then:
Q10mediummcqPhysicsPhysics
The radius of Germanium (Ge) nuclide is measured to be twice the radius of . The number of nucleons in Ge are:
Q11hardmcqPhysicsPhysics
The mass of a nucleus is less than the sum of the masses of all its nucleons. The binding energy per nucleon of nucleus is nearly:
Q12easymcqPhysicsPhysics
If the nuclear radius of is , the approximate nuclear radius of in Fermi is:

Frequently Asked Questions

How many Nuclei questions are on ExamTest.live?โ–ผ
We have 12 Nuclei questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Nuclei MCQs free?โ–ผ
Yes. All Nuclei questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Nuclei questions?โ–ผ
Nuclei questions are commonly asked in Physics, PHYSICS. You can filter by exam using the links above.
How do I practice Nuclei questions effectively?โ–ผ
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.