Exam-Style Online Test | Chemistry: Structure Of Atom Test
GKaim: Measure. Improve. Achieve.

Class 11 Chemistry — Chapter 2: Structure of Atom Online Test

Start Your Test by Choosing a Paper

0%

Class 11 Chemistry: Structure of Atom Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 20

1. For hydrogen atom, the ratio of radii of 1st and 3rd orbit is:

2 / 20

2. The number of radial nodes in 5d orbital is:

3 / 20

3. The ionization energy of hydrogen atom in the ground state is:

4 / 20

4. The electronic configuration of neon (Z=10) is:

5 / 20

5. The electronic configuration of helium (Z=2) is:

6 / 20

6. Why do electrons prefer to occupy different orbitals of equal energy before pairing?

7 / 20

7. When two subshells have the same value, the one that fills first is the one with:

8 / 20

8. Which d-orbitals have lobes oriented between the axes (at 45° angles)?

9 / 20

9. The radial probability distribution curve of a 2s orbital shows:

10 / 20

10. The value of is associated with:

11 / 20

11. The azimuthal quantum number primarily determines the:

12 / 20

12. If , how many orbitals are possible in that shell?

13 / 20

13. The three dumbbell-shaped orbitals oriented along x, y, and z axes are:

14 / 20

14. What physical meaning does the wave function itself have?

15 / 20

15. The first line of the Brackett series corresponds to which transition?

16 / 20

16. Which equation represents Einstein’s photoelectric effect?

17 / 20

17. What is the wavelength of a radio wave with frequency ?

18 / 20

18. Which of the following is a correct postulate of Bohr’s atomic model?

19 / 20

19. In Chadwick’s experiment, which element was bombarded with alpha particles to discover the neutron?

20 / 20

20. What conclusion did Rutherford draw from the gold foil experiment?

Please provide information to view your result.

Your score is

Share your achievement!

LinkedIn Facebook
0%

Please provide your feedback.

Thank you for your valuable feedback.

0%

Class 11 Chemistry: Structure of Atom Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

Get new questions on each attempt

  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. Which experimental fact could not be explained by Bohr’s model?

2 / 30

2. The radius of the first Bohr orbit of hydrogen is:

3 / 30

3. What experimental evidence confirmed de Broglie’s hypothesis?

4 / 30

4. If wavelength of radiation is , the photon energy is:

5 / 30

5. Which feature of the atom was directly revealed by Rutherford’s experiment?

6 / 30

6. The maximum number of electrons that can be accommodated in a shell with principal quantum number is:

7 / 30

7. Which quantities are related by the time–energy form of uncertainty principle?

8 / 30

8. Which key limitation made the plum pudding model incompatible with atomic emission spectra?

9 / 30

9. Which quantum number determines the shape of an orbital?

10 / 30

10. Why was the discovery of the neutron important?

11 / 30

11. Which is the correct configuration of potassium (Z=19)?

12 / 30

12. Which orbital fills immediately after 4p according to Aufbau sequence?

13 / 30

13. If the time period of an EM wave is , its frequency is:

14 / 30

14. Which radiation is most dangerous due to its high penetration power and ionizing ability?

15 / 30

15. The minimum energy needed to remove an electron from a metal surface is called:

16 / 30

16. What is the relative mass of a proton compared to an electron?

17 / 30

17. Which transition in hydrogen atom produces radiation of frequency ? (h = , 1 eV = )

18 / 30

18. For a given element and electronic transition, how do emission and absorption wavelengths compare?

19 / 30

19. Which subshell is filled immediately after in the neutral-atom filling order?

20 / 30

20. Which experiment indirectly supported Pauli’s exclusion principle?

21 / 30

21. The actual configuration of molybdenum (Z=42) is:

22 / 30

22. Which element has the configuration [Ar] 3d⁵ 4s²?

23 / 30

23. What is the SI unit of wave number?

24 / 30

24. The electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁶ corresponds to which element?

25 / 30

25. Which type of electromagnetic wave is mainly responsible for sunburn?

26 / 30

26. Which of the following best explains the difference between orbit and orbital?

27 / 30

27. Which relation connects wavelength , frequency , and velocity of electromagnetic waves?

28 / 30

28. The speed of electromagnetic waves in a medium is less than in vacuum because:

29 / 30

29. What is an atomic orbital?

30 / 30

30. How many orientations are possible for f-orbitals?

Please provide information to view your result.

Your score is

Share your achievement!

LinkedIn Facebook
0%

Please provide your feedback.

Thank you for your valuable feedback.

0%

Class 11 Chemistry: Structure of Atom Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

Earn a certificate upon passing

Get new questions with every attempt

  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Why is Bohr’s model called semi-classical?

2 / 50

2. The wavelength of the second line of Balmer series in hydrogen is approximately:

3 / 50

3. Which of the following elements has the configuration [He] 2s² 2p²?

4 / 50

4. Which feature is unique to orbitals but not to orbits?

5 / 50

5. A stellar spectrum shows strong dark Na “D” lines near and . This most directly indicates:

6 / 50

6. Which of the following has a noble gas configuration in its ground state?

7 / 50

7. Which subshell can accommodate a maximum of 14 electrons?

8 / 50

8. Which radiation is most dangerous due to its high penetration power and ionizing ability?

9 / 50

9. Which of the following statements about the uncertainty principle is incorrect?

10 / 50

10. In Bohr’s model, the energy difference between two orbits is given by:

11 / 50

11. If a photon has wavelength , its energy is approximately:

12 / 50

12. Which statement about emission vs absorption for the same transition is correct?

13 / 50

13. What did the plum pudding model successfully account for?

14 / 50

14. The energy of an orbital depends mainly on:

15 / 50

15. Which branch of physics deals with the study of spectra?

16 / 50

16. The energy of emitted photon in hydrogen spectrum is related to:

17 / 50

17. Which noble gas has the stable configuration [Xe] 6s² 4f¹⁴ 5d¹⁰ 6p⁶?

18 / 50

18. Which statement correctly describes Bohr’s concept of an orbit?

19 / 50

19. Which model introduced the concept of atomic orbitals instead of fixed orbits?

20 / 50

20. For a subshell with , the possible values of are:

21 / 50

21. The energy required to excite an electron in hydrogen atom from to is:

22 / 50

22. The concept of standing electron waves inside the atom was used by:

23 / 50

23. What is the total number of nodes in 4p orbital?

24 / 50

24. Which arrangement produces an absorption spectrum?

25 / 50

25. If wavelength of radiation is , the photon energy is:

26 / 50

26. Which subshell can have a maximum of 14 electrons?

27 / 50

27. The nucleus of an atom is made up of:

28 / 50

28. Why does the 1s orbital of hydrogen contain only one electron in the ground state?

29 / 50

29. Which of the following is TRUE about spin quantum number?

30 / 50

30. Which is the correct configuration for iron (Z=26)?

31 / 50

31. The Schrödinger wave equation gives information about:

32 / 50

32. The ground-state configuration of copper (Z = 29) is:

33 / 50

33. How many unpaired electrons are there in oxygen (Z=8) based on Hund’s rule?

34 / 50

34. The maximum number of electrons that can be present in all orbitals with is:

35 / 50

35. How many p-orbitals exist in each shell where ?

36 / 50

36. In the plum pudding model, how is the positive charge distributed?

37 / 50

37. The splitting of white light into its component colors is called:

38 / 50

38. Which experiment first gave evidence of electron spin?

39 / 50

39. If , how many orientations of orbitals are possible?

40 / 50

40. For a given value of , the maximum number of electrons that can be accommodated is:

41 / 50

41. The wavelength of the first Lyman series line in hydrogen is approximately:

42 / 50

42. What fraction of alpha particles were deflected back at angles greater than in Rutherford’s experiment?

43 / 50

43. What is the mass of a neutron compared to a proton?

44 / 50

44. How many orientations are possible for p-orbitals?

45 / 50

45. Which orbital will have the maximum number of angular nodes?

46 / 50

46. Which hydrogen spectral line lies in the red region of the visible spectrum?

47 / 50

47. Why was the discovery of the neutron important?

48 / 50

48. Which concept replaced Bohr’s fixed orbits due to Schrödinger’s work?

49 / 50

49. In an octahedral field, orbitals pointing directly along the axes experience:

50 / 50

50. Which orbital has a spherical shape around the nucleus?

Please provide accurate information so we can send your Achievement Certificate by mail.

Your score is

Share your achievement!

LinkedIn Facebook
0%

Please provide your feedback.

Thank you for your valuable feedback.

Practice Structure of Atom MCQs
Download Class 11 Chemistry MCQ Study Bundle

Class 11 Chemistry: Chapter 2 — Structure of Atom Online Test

The Class 11 Chemistry: Chapter 2 — Structure of Atom Online Test is designed to give you a thorough understanding of atomic structure. With a pool of 475 MCQs, this test covers the fundamental concepts of atomic theory, electron configuration, and subatomic particles. This test is completely free, CBSE/NCERT-aligned, and provides instant results after each attempt. It is divided into three difficulty levels to help you build confidence and gradually progress to more challenging questions.

What is this Chapter 2 Online Test?

This test contains three exam-style MCQ papers for Chapter 2: Structure of Atom:

  • Paper 1 (Easy) — Foundation: 20 questions · 30 min · Pass 40% · Fixed set
  • Paper 2 (Medium) — Mixed: 30 questions · 45 min · Pass 50% · Randomized from a pool of ~475 questions
  • Paper 3 (Hard) — Challenge: 50 questions · 75 min · Pass 70% · Randomized from the same pool + Certificate on pass

Note: You get new question mixes in Paper 2 and Paper 3 on every attempt. Each attempt is timed, auto-evaluated, and shows your score with an answer review.

Topics Covered in These Online Tests

In this online test, you will practice key topics from Chapter 2: Structure of Atom, which include:

  • Discovery of Subatomic Particles — Electrons, Protons, Neutrons, and their properties
  • Thomson’s Model of Atom — Plum pudding model and its limitations
  • Rutherford’s Model of Atom — Gold foil experiment and its conclusions
  • Bohr’s Model of Atom — Energy levels, quantization of energy, and hydrogen spectrum
  • Dual Nature of Matter — Wave-particle duality of electrons, de Broglie hypothesis
  • Quantum Mechanical Model — Schrödinger’s equation, orbitals and quantum numbers
  • Electron Configuration — Aufbau principle, Pauli exclusion principle, Hund’s rule
  • Atomic Orbitals and Quantum Numbers — Types of orbitals (s, p, d, f) and their significance

How This Exam-Style Online Test Works

  • Pick a paper → Answer MCQs within time → Submit → Get instant score and answer review.
  • Timed MCQs: Paper 1: 30 minutes, Paper 2: 45 minutes, Paper 3: 75 minutes.
  • Instant feedback: Your score and detailed summary with answers are available immediately.
  • Unlimited retakes: You can retake the test as many times as you like. Paper 2 and Paper 3 offer fresh mixes on each attempt.
  • Certificate: A certificate is awarded after successfully passing Paper 3 with a score of 70% or more.

Who Can Take This Test?

  • Class 11 CBSE/NCERT students preparing for unit tests, mid-term exams, and final exams.
  • JEE Main/Advanced & NEET aspirants seeking a strong foundation in Chemistry concepts.
  • School students wanting to improve their understanding of atomic structure and related topics.
  • Teachers and tutors who need practice tests for their students.
  • Self-learners and home-schoolers wanting an online resource for Chapter 2 practice.

Advantages of this Online Test

  • Real exam feel: Timed tests help you simulate the real exam environment, improving time management.
  • Step-up difficulty: Progress from Paper 1 (easy) to Paper 3 (hard) to master the topic.
  • Instant feedback: You’ll get a score, review your answers, and learn where you need improvement.
  • Unlimited attempts: Take the test as many times as you want, improving with each attempt.
  • Completely free: No charges, no sign-in required—just unlimited access to the online test.

How This Test Helps You Study Better

  • Step 1 – Concept check: Take Paper 1 after reading the chapter to gauge your understanding.
  • Step 2 – Reinforce learning: Take Paper 2 for a balanced mix of theory and numerical questions.
  • Step 3 – Challenge yourself: Take Paper 3 to assess your mastery of the chapter.
  • Step 4 – Review: Analyze your results and reattempt the test to improve your knowledge.

Important Notes (Read Before You Start)

  • Do not refresh or close the tab during the test as it will interrupt your session.
  • Best experience: Use a modern browser and stable internet connection for optimal performance.
  • Allow cookies / local storage to save your progress.
  • 100% free: There are no hidden charges for taking this test.

FAQs on Structure of Atom Online Test ▼

Subscribe
Notify of
guest
0 Comments

Related MCQs

Scroll to Top