Multiple Choice Questions (MCQs) for Class 12 Physics: Chapter 12 Atoms
Review structured MCQ sets for Class 12 Physics Chapter 12 Atoms. Built according to official CBSE guidelines, these downloadable questions support daily revision and core concept reinforcement.
Practice Chapter 12 Atoms MCQs for Class 12 Physics
Navigate directly to the 50 objective questions for Chapter 12 Atoms using the digital viewer below. Each practice set includes verified answer keys, allowing students to instantly cross-check their work and identify areas requiring further revision.
Question. Balmer series is obtained when electron transits from
a) n = 1,2,3, … to n = 5
b) n = 3,4,5 … to n = 2
c) n = 1,2,3, … to n = 4
d) n = 1,2,3, … to n = 6
Answer: B
Question. From Fig. shown predict which series has waves of maximum frequency
a) Lymen
b) Balmer
c) Paschen
d) Bracket
Answer: A
Question. If number of protons in an atom is equal to (number of electrons + 2). Then the atom is said to be
a) Single ionized positive ion
b) Single ionized positive atom
c) Double ionized positive ion
d) Double ionized positive atom
Answer: C
Question. Which is the most dense part of an atom?
a) The exact central part of the atom.
b) The region at the center of atom containing neutrons and protons.
c) Outer edge of the atom
d) None of the options
Answer: B
Question. What percentage of α particle scattered at an angle more than 90º?
a) .0125%
b) .125%
c) 1.25%
d) 12.5%
Answer: A
Question. Why the nucleus of gold is about remains stationary throughout the scattering process?
a) Because its mass is 100 times the mass of proton.
b) Because its mass is 50 times the mass of proton.
c) Because its mass is 150 times the mass of proton.
d) Because its mass is 200 times the mass of proton.
Answer: D
Question. Why electrons around the gold nucleus were unable to deflect α particles?
a) Size of α particle is much greater than that of electron.
b) Number of electrons around gold nucleus is very small
c) α particles is much heavier than electron.
d) Electrons are negatively charged.
Answer: C
Question. What is the ratio of charge on α particle and gold nucleus?
a) .025
b) .25
c) .2
d) .5
Answer: A
Question. What is the basic unit of matter?
a) Atom
b) Electron
c) Proton
d) Neutron
Answer: A
Question. The series of spectrum when electron jumps from n = 5 to n = 3 is
a) Lymen
b) Balmer
c) Paschen
d) Bracket
Answer: C
Question. What is the maximum energy of photon in emission spectrum of hydrogen atom
a) 13.6 eV
b) 1.36 eV
c) 1.5 eV
d) 1eV
Answer: A
Question. Which particle is responsible for the ionization of the atom?
a) Positron
b) Electron
c) Proton
d) Neutron
Answer: B
Free study material for Physics
Practice MCQs for Class 12 Physics Chapter 12 Atoms
Chapter MCQs with Answers for Class 12 Physics
Test your conceptual understanding of Chapter 12 Atoms with these targeted multiple-choice questions. Designed in alignment with the latest CBSE curriculum for Class 12 Physics, these problem sets build accuracy and prepare students for objective exams.
Expert Practice Material for Class 12 Physics
Cross-reference your completed choices with comprehensive NCERT solutions for Class 12 Physics to ensure absolute clarity across all sub-topics in this chapter.
Complete Your Chapter Revision
Follow up your worksheet practice by attempting the interactive online Physics MCQ test for this chapter to evaluate your execution speed. All platform resources are free to access.
FAQs
You can get most exhaustive CBSE Class 12 Physics Atoms MCQs Set 04 for free on StudiesToday.com. These MCQs for Class 12 Physics are updated for the 2026-27 academic session as per CBSE examination standards.
Yes, our CBSE Class 12 Physics Atoms MCQs Set 04 include the latest type of questions, such as Assertion-Reasoning and Case-based MCQs. 50% of the CBSE paper is now competency-based.
By solving our CBSE Class 12 Physics Atoms MCQs Set 04, Class 12 students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the Physics.
Yes, Physics MCQs for Class 12 have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused CBSE exams.
Yes, you can also access online interactive tests for CBSE Class 12 Physics Atoms MCQs Set 04 on StudiesToday.com as they provide instant answers and score to help you track your progress in Physics.