Exam-Style Online Test | Chapter: Classification Of Elements

Class 11 Chemistry — Chapter 3: Classification of Elements and Periodicity in Properties Online Test

Start Your Test by Choosing a Paper

0%

Class 11 Chemistry: Classification of Elements and Periodicity in Properties 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. Which property is not periodic in nature?

2 / 20

2. What is meant by the diagonal relationship in the periodic table?

3 / 20

3. What is meant by valency of an element?

4 / 20

4. Which of the following best explains why halogens have highly negative first electron gain enthalpies?

5 / 20

5. Why is Al³⁺ smaller than Na⁺ though both are cations?

6 / 20

6. Which factor most strongly influences covalent radius across a period?

7 / 20

7. Identify the block for the configuration .

8 / 20

8. What is the root word for digit 2 in the IUPAC naming system?

9 / 20

9. Which group contains the alkaline earth metals?

10 / 20

10. Which group of elements was not included in Mendeleev’s original periodic table?

11 / 20

11. Which major drawback arose when elements were grouped only as metals and non-metals?

12 / 20

12. Which block contains the inner transition elements?

13 / 20

13. How did Moseley experimentally determine atomic number?

14 / 20

14. During which period of history did the number of known elements grow rapidly due to improved experimental techniques?

15 / 20

15. Why was the position of hydrogen a limitation in Mendeleev’s table?

16 / 20

16. Which of the following elements shows the smallest covalent radius?

17 / 20

17. Which of the following factors does NOT affect electron gain enthalpy?

18 / 20

18. Which element shows +2 and +3 oxidation states, with +3 being more stable?

19 / 20

19. For p-block elements, how is group number related to valency?

20 / 20

20. What is the general trend of electron gain enthalpy down a group?

Please provide information to view your result.

Your score is

Share your achievement!

LinkedIn Facebook Twitter
0%

Please provide your feedback.

Thank you for your valuable feedback.

0%

Class 11 Chemistry: Classification of Elements and Periodicity in Properties 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. Compare the size of Cl (neutral atom) and Cl⁻ (anion).

2 / 30

2. Successive ionization enthalpies provide evidence for:

3 / 30

3. Which unusual step did Mendeleev take to keep elements with similar properties together?

4 / 30

4. What is the root for digit 8 in IUPAC naming rules?

5 / 30

5. Which of the following best defines metallic radius?

6 / 30

6. Which of the following is true about the growth in the number of elements?

7 / 30

7. What is the valency of Group 1 elements?

8 / 30

8. The maximum number of elements present in the 6th period of the periodic table is:

9 / 30

9. Which of the following elements has the lowest electronegativity?

10 / 30

10. Which statement is correct about electron gain enthalpies?

11 / 30

11. Which element has a higher ionization enthalpy: Be or B?

12 / 30

12. Which gas forms about 21% of Earth’s atmosphere?

13 / 30

13. Why does boron show chemistry very different from aluminum?

14 / 30

14. Which group of elements was historically called "halogens" due to similar salt-forming properties?

15 / 30

15. In which year did Döbereiner propose his Triad law?

16 / 30

16. What is the periodic trend of metallic character across a period?

17 / 30

17. Why does carbon form stable multiple bonds, but silicon prefers single bonds?

18 / 30

18. Which common property groups halogens together?

19 / 30

19. Which superheavy element is named after a Russian region?

20 / 30

20. Why is the second ionization enthalpy of sodium extremely high compared to the first?

21 / 30

21. Which of the following is the official name of element 113?

22 / 30

22. What is the first electron gain enthalpy of oxygen?

23 / 30

23. Identify the block for the configuration .

24 / 30

24. By the early 19th century, about how many elements were known to chemists?

25 / 30

25. Why was Mendeleev’s law eventually modified?

26 / 30

26. Why do second-period elements often show anomalous properties compared to heavier congeners?

27 / 30

27. Which of the following pairs shows the same valency as their group number?

28 / 30

28. Which digit corresponds to the IUPAC root “tri”?

29 / 30

29. Which gas is essential for combustion and respiration?

30 / 30

30. Which important scientific principle was missing from random classification?

Please provide information to view your result.

Your score is

Share your achievement!

LinkedIn Facebook Twitter
0%

Please provide your feedback.

Thank you for your valuable feedback.

0%

Class 11 Chemistry: Classification of Elements and Periodicity in Properties 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. How many elements are present in the 4th period of the periodic table?

2 / 50

2. Which of the following is the official name of element 113?

3 / 50

3. Which superheavy element has the official name *Roentgenium*?

4 / 50

4. Which was a major limitation of grouping elements only by similar properties?

5 / 50

5. Which pair of elements shows diagonal relationship in the periodic table?

6 / 50

6. Which of the following pairs are isoelectronic species?

7 / 50

7. Which period in the periodic table is the longest?

8 / 50

8. What was the greatest achievement of Mendeleev’s periodic table?

9 / 50

9. Which of the following pairs represents a non-metal and a metalloid, respectively?

10 / 50

10. Which of the following pairs best demonstrates Newlands’ Octaves?

11 / 50

11. Which of the following elements most commonly exhibits variable valency?

12 / 50

12. Which element has the lowest first ionization enthalpy among the following?

13 / 50

13. Which element shows +2 and +3 oxidation states, with +3 being more stable?

14 / 50

14. Which property was mostly used by early chemists to group elements?

15 / 50

15. Why is fluorine the strongest oxidizing agent among the halogens?

16 / 50

16. What is meant by the second electron gain enthalpy?

17 / 50

17. Which element is an exception, often showing both metallic and non-metallic behavior?

18 / 50

18. Which group of elements has the least negative electron gain enthalpies?

19 / 50

19. Which is a unique property of second-period elements not observed in heavier congeners?

20 / 50

20. Why is the position of hydrogen unique in the periodic table?

21 / 50

21. How many groups and periods were present in Mendeleev’s original table?

22 / 50

22. Why is the first ionization enthalpy of nitrogen higher than that of oxygen?

23 / 50

23. Which element was named after the scientist Nicolaus Copernicus?

24 / 50

24. Which element was temporarily named *Ununbium (Uub)*?

25 / 50

25. What is the temporary IUPAC name for element with atomic number 118?

26 / 50

26. Why is the van der Waals radius larger than the covalent radius?

27 / 50

27. Which factor does NOT directly affect electron gain enthalpy?

28 / 50

28. Who introduced the most widely used scale of electronegativity?

29 / 50

29. Which of the following is an advantage of the Mulliken scale over Pauling’s scale?

30 / 50

30. Why did classification purely on valency fail?

31 / 50

31. How is the valency of Group 1 elements related to their group number?

32 / 50

32. Why does nitrogen not form pentahalides like phosphorus?

33 / 50

33. Which of the following pairs is an isoelectronic series?

34 / 50

34. Which pair shows diagonal similarity in forming covalent halides?

35 / 50

35. Why does boron show chemistry very different from aluminum?

36 / 50

36. Which of the following is NOT an example of a Döbereiner triad?

37 / 50

37. What was the basis of Mendeleev’s periodic table?

38 / 50

38. Which digit corresponds to the IUPAC root “sept”?

39 / 50

39. Which group of elements was not included in Mendeleev’s original periodic table?

40 / 50

40. What is meant by the diagonal relationship in the periodic table?

41 / 50

41. What is the root for digit 6 in IUPAC element naming?

42 / 50

42. On what basis did Mendeleev arrange the elements in his periodic table?

43 / 50

43. Why is Al³⁺ smaller than Na⁺ though both are cations?

44 / 50

44. Which type of radius is most useful in predicting bond lengths in organic molecules?

45 / 50

45. What is the symbol and name for element 115?

46 / 50

46. What is electronegativity?

47 / 50

47. Which of the following has the largest ionic radius?

48 / 50

48. How many groups are present in the modern periodic table?

49 / 50

49. Why does boron not form simple ionic compounds like BCl₃⁻?

50 / 50

50. Who proposed the Law of Octaves in 1864?

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

Your score is

Share your achievement!

LinkedIn Facebook Twitter
0%

Please provide your feedback.

Thank you for your valuable feedback.

Practice Classification of Elements and Periodicity in Properties MCQs
Download Class 11 Chemistry MCQ Study Bundle

Class 11 Chemistry — Chapter 3: Classification of Elements and Periodicity in Properties Online Test

The Class 11 Chemistry: Chapter 3 – Classification of Elements and Periodicity in Properties Online Test gives you a real exam feel with chapter-focused MCQs. You will answer timed questions, see your result instantly, review answers, and—if you pass Paper 3—download a certificate. This test is free, CBSE/NCERT-aligned, and allows unlimited attempts. It works like a quick chapter-wise mock test / quiz for fast revision of the periodic table and periodic trends.

Confused about modern periodic table, periodic trends or periodic properties? Don’t worry. This page is your safe practice space for Chapter 3. Think of it as a small online mock test you can take at home on your phone or laptop. Each attempt is a short online exam with objective questions. You simply start a paper, answer MCQs, see your score, and read the explanations. With every attempt you’ll understand the periodic table better. When you’re ready, go for Paper 3 and earn a certificate. One small step today, stronger Chemistry tomorrow.

What is this Class 11 Chemistry: Classification of Elements and Periodicity in Properties Online Test?

This page contains three exam-style MCQ papers for Chapter 3:

  • 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 375 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 answer review.

Topics covered in these online tests

These online tests are based on NCERT Class 11 Chemistry Chapter 3 and cover the full range of sub-topics. You will practice questions from:

  • Genesis of periodic classification — Dobereiner’s triads, Newlands’ law of octaves, Mendeleev’s periodic table
  • Modern periodic law and the long form of periodic table
  • Electronic configuration and periodic table — periods, groups, blocks (s, p, d, f)
  • Nomenclature of elements (including elements with Z > 100, IUPAC rules – basic idea)
  • Periodic trends in atomic properties — atomic radius, ionic radius, covalent radius, van der Waals radius
  • Ionization enthalpy — trends in periods and groups, factors affecting IE
  • Electron gain enthalpy — general trends, irregularities, halogens vs noble gases
  • Electronegativity — concept and trends (Pauling scale, basic comparisons)
  • Valence and valency — relation with electronic configuration
  • Anomalous behaviour of second period elements and diagonal relationship
  • Periodic trends in chemical reactivity of s- and p-block elements

For more detailed step-by-step practice, you can also try: Classification of Elements and Periodicity in Properties MCQs and the full Class 11 Chemistry MCQ Question Bank.

How This Exam-Style Online Test Works

Short version: Pick a paper → answer MCQs within time → submit → get instant score and review. Pass Paper 3 to get a certificate.

What you’ll see during the test

  • MCQs: One question with four options (A, B, C, D).
  • Timer on top: P1: 30 min • P2: 45 min • P3: 75 min.
  • Pagination: Typically 10 questions per page (move to next group using page controls).
  • Navigation: Use Next/Prev buttons or question map to revisit before submitting.
  • View Result: Click View Result to see marks and detailed summary.
  • Result page shows: score %, correct / incorrect / unanswered count, answer-key/review, and share options.
  • Restart: Click Restart Test to try again with a new mix of questions (P2 & P3).

Note: Please share your feedback on the result page after completing a test.

Marking & pass criteria

  • Scoring: +1 for correct, 0 for incorrect (no negative marking).
  • Passing marks: Paper 1 — 40% • Paper 2 — 50% • Paper 3 — 70%.
  • Randomization: Paper 2 & 3 shuffle questions from a large Chapter 3 question pool on every attempt; Paper 1 stays fixed.

Who can take this test?

  • CBSE Class 11 students revising Chapter 3 (Classification of Elements and Periodicity in Properties).
  • Class 12 bridge / revision learners who want to fix periodic table basics.
  • JEE/NEET foundation aspirants building strong command over periodic trends and periodic properties.
  • Teachers / tutors needing ready-made chapter tests for assignments and quizzes.
  • Students from other boards & countries who want extra practice on periodic trends.
  • Competitive exam aspirants revising core periodic table concepts through MCQs.

Advantages of this online test

  • Real exam feel: timer, pass %, and auto-submit on time out.
  • Instant feedback: get your score, see correct answers, and spot weak areas immediately.
  • Step-up difficulty: Easy → Mixed → Challenge (+ certificate on Paper 3).
  • Unlimited attempts: practice till perfect; fresh randomized sets in Paper 2 & 3.
  • Zero cost & safe: completely free; no payment, no signup required.

How this test helps you study better

Use this simple plan for Chapter 3:

  • Step 1 – Concept check: Attempt Paper 1 after studying the chapter. Note weak sub-topics (e.g. IE trends, EGE, diagonal relationship).
  • Step 2 – Reinforce: Attempt Paper 2 (randomized) to stabilise accuracy in periodic trends and table concepts.
  • Step 3 – Exam readiness: Attempt Paper 3 strictly within time. Target ≥ 70% and earn the certificate.
  • Step 4 – Review: Read solutions carefully, maintain a small error-log notebook, revise only missed ideas.
  • Step 5 – Retake smartly: Re-attempt after 1–2 days to test long-term recall and real improvement.

Important notes (read before you start)

  • Do not refresh / close the tab during the test.
  • Best experience: latest Chrome/Edge, stable internet, distraction-free screen.
  • Allow cookies / local storage so your progress and settings work smoothly.
  • Safety: This test is 100% FREE. Ignore any payment or login requests.

More practice for Class 11 Chemistry

After finishing this online test, strengthen your Chemistry further: visit the full Class 11 Chemistry Online Test Index or practice all chapters from the Class 11 Chemistry MCQ Collection.

FAQs on Classification of Elements and Periodicity in Properties Online Test ▼

Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments

Related MCQs

Scroll to Top