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Structure of Atomic Nucleus MCQs

Prepare for Structure of Atomic Nucleus MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

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Topic Notes: Structure of Atomic Nucleus

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

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Master Structure of Atomic Nucleus MCQs for Competitive Exams with our comprehensive, verified question bank. Designed for students and competitive exam aspirants across Pakistan, this study resource provides topic-wise practice questions for CSS, PMS, FPSC, PPSC, SPSC, KPPSC, BPSC, NTS, and university entry tests.

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Aligned with FPSC, PPSC, and CSS syllabus criteria for Structure of Atomic Nucleus.
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Preparation Guide & Key Focus Areas for Structure of Atomic Nucleus MCQs

When preparing for Structure of Atomic Nucleus MCQs (Physics), focus on core definitions, historical timelines, relevant provisions, and commonly tested factual points. Review each question below, test your knowledge against the given options, and inspect the detailed explanation to solidify your understanding.

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451
Atoms having different atomic number as well as different mass number but having same number of neutrons are called
452
Cosmic ray events are detected with a Geiger counter. The events occur randomly in time but with a well-defined mean rate r = 1 Hz = 1 event/s such that P(1 event occurs in (t, t + dt)) = r dt. What is the probability of recording 5 counts with the Geiger counter?
453
Who was the first to suggest the existence of a positively charged nucleus in an atom?
454
The wavelength of the first line of Lyman series of hydrogen is 1216 Å. The wavelength of the second line of the same series is
455
58. The number of neutrons present in 6 gm of C is
456
83. In SI system the unit of radioactivity is
457
The particles less in mass than protons are
458
Thorium is transformed after the transmission of an α-particle into:
459
A certain radioactive mass decays from 64 g to 2 g in 20 days. What is its half-life?
460
What is the degeneracy of the energy for a hydrogen-like atom with principal quantum number n?