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Class 11 Chemistry — Chapter 11: P-Block Elements Online Test

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Class 11 Chemistry: P-Block Elements 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

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1 / 20

1. The reaction of elemental Silicon () with aqueous produces gas, but is unreactive toward dilute . This contrasting reactivity implies that is a substance with which characteristic chemical property?

2 / 20

2. The chemical equation describes the etching of glass (silica). In this reaction, the role of is unique because:

3 / 20

3. The ratio in a zeolite affects its properties. A higher ratio (e.g., vs. ):

4 / 20

4. Industrial production of is often a major byproduct of which large-scale chemical process involving calcium carbonate ()?

5 / 20

5. Single-walled carbon nanotubes (SWCNTs) are often bundled together into ropes. The individual tubes within a rope are held together by:

6 / 20

6. What is the total number of covalent bonds (single and double) present in the molecule?

7 / 20

7. Which statement is true regarding the acidity/hydrolysis of the oxides of Carbon and Silicon in the presence of strong base?

8 / 20

8. In the triple bond, how many bonds are present?

9 / 20

9. Which mineral is the most abundant compound of Silicon on the Earth's crust?

10 / 20

10. The chemical name of Borax () is:

11 / 20

11. Kernite (or Rasorite) is the second most important ore of boron. What is its chemical formula?

12 / 20

12. The first element of each p-block group shows anomalous behavior. This is primarily due to:

13 / 20

13. The first ionization enthalpy () of Group 13 elements shows a complex trend. What is the correct order?

14 / 20

14. The bond length in (130 pm) is shorter than expected for a single bond. This is attributed to:

15 / 20

15. The bridge bond angle () in diborane is approximately:

16 / 20

16. When reacts with a Lewis base such as ammonia (), what is the term for the resulting product?

17 / 20

17. The ionization enthalpy () generally decreases down a group. For Group 14, which element exhibits a slight increase in the first ionization enthalpy compared to the element immediately preceding it?

18 / 20

18. The stability of double bonds over single bonds is quantified by the difference in their bond enthalpies. For , the average bond enthalpy of is approximately:

19 / 20

19. How does the stability of multiple bonds compare to that of hypothetical multiple bonds?

20 / 20

20. The discovery of Buckminsterfullerene () in 1985 led to the awarding of the Nobel Prize in Chemistry in 1996 to which trio of scientists?

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Class 11 Chemistry: P-Block Elements 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.

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

Good luck! 👍

1 / 30

1. Single-walled carbon nanotubes (SWCNTs) are often bundled together into ropes. The individual tubes within a rope are held together by:

2 / 30

2. Why is graphene considered to be a much more promising material than graphite for transparent, flexible electronic devices?

3 / 30

3. While Boron (B) is a non-metal (or metalloid) and an insulator, other elements of Group 13 (Al, Ga, In, Tl) are:

4 / 30

4. Clay minerals and Micas are excellent examples of which type of silicate structure?

5 / 30

5. The unique bonding in diborane () involves the formation of bonds. What are these bonds commonly called?

6 / 30

6. The structure of solid orthoboric acid () consists of:

7 / 30

7. In the structure of (Buckminsterfullerene), what is the hybridization of every carbon atom?

8 / 30

8. What is the correct chemical formula for Borax (also known as tincal)?

9 / 30

9. Compare the bond dissociation enthalpies () of the single bonds formed with Oxygen for Carbon and Silicon ( bond).

10 / 30

10. Graphite is commonly used as a lubricant and in pencil lead because of which physical property?

11 / 30

11. Zeolites are used as sorbents (adsorbents) for gases. Their effectiveness as sorbents is due to their large:

12 / 30

12. Which structural feature characterizes the difference between a linear silicone polymer and a cross-linked (3D) silicone polymer?

13 / 30

13. What is the most characteristic and common oxidation state shown by all elements in Group 14?

14 / 30

14. The nature of Boron's oxide () is _______, while Aluminium's oxide () is _______.

15 / 30

15. When a solution of Borax is treated with a calculated amount of an acid (like or ), the main product formed is:

16 / 30

16. Which reaction type is used to prepare the monomer (dialkyldichlorosilane) from elemental silicon and alkyl halide () in the presence of copper powder as a catalyst (Rochow Process)?

17 / 30

17. Which statement is true regarding the acidity/hydrolysis of the oxides of Carbon and Silicon in the presence of strong base?

18 / 30

18. Which of the following elements belongs to Group 13 (Boron family)?

19 / 30

19. Why does Lead () show virtually no catenation?

20 / 30

20. is the most stable and common fullerene molecule. Its structure closely resembles a soccer ball. What is the common name given to this specific allotrope?

21 / 30

21. What chemical reagent is added during the titration of a Boric acid solution to make it strong enough to be titrated against a strong base ()?

22 / 30

22. What is the fundamental building unit of all naturally occurring silicates?

23 / 30

23. Among the Group 13 elements, which one forms the most stable unipositive ion ()?

24 / 30

24. When hydrated aluminium chloride, , is heated strongly in air, what is the major stable solid product formed?

25 / 30

25. Why do Gallium (Ga) and Indium (In) show only a +3 oxidation state, while Thallium (Tl) also shows a stable +1 oxidation state?

26 / 30

26. What is the total number of covalent bonds (single and double) present in the molecule?

27 / 30

27. What structural feature allows graphene to be an exceptionally good conductor of electricity?

28 / 30

28. When Carbon Dioxide is passed through an aqueous solution of sodium hydroxide (), the reaction occurs. This reaction demonstrates the acidic nature of and is an example of which reaction type?

29 / 30

29. Carbon Monoxide is a major air pollutant primarily produced by:

30 / 30

30. Diamond is a non-conductor of electricity. What structural feature explains this property?

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Class 11 Chemistry: P-Block Elements 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!

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

Good luck! 👍

1 / 50

1. What is the hybridization of the Boron atom in the anion formed when orthoboric acid reacts with water?

2 / 50

2. Which set of reactants is used for the large-scale industrial preparation of Diborane?

3 / 50

3. When hydrated aluminium chloride, , is heated strongly in air, what is the major stable solid product formed?

4 / 50

4. Silicon's catenation tendency is low compared to Carbon because the bond is easily attacked and cleaved by which common reagent?

5 / 50

5. Carbon Monoxide is a neutral gas, meaning it does not react with acids or bases. Which physical property is also characteristic of ?

6 / 50

6. What is the maximum covalency that Boron (B) can exhibit?

7 / 50

7. What is the fundamental repeating unit that links together to form long chain silicone polymers?

8 / 50

8. Why is graphene considered to be a much more promising material than graphite for transparent, flexible electronic devices?

9 / 50

9. Which of the following carbon-containing ions derives its unique stability and planar structure from the presence of delocalized bonds?

10 / 50

10. Silicones are synthetic organosilicon polymers characterized by which repeating structural unit?

11 / 50

11. What is the combined state of carbon that is the main constituent of marble, chalk, and limestone?

12 / 50

12. Graphene exhibits a unique phenomenon where electrons behave as if they have no mass (known as massless Dirac fermions). This is responsible for which of its extreme properties?

13 / 50

13. In the zeolite structure, the substitution of by introduces a net negative charge on the framework. This charge is balanced by the presence of:

14 / 50

14. Carbon exhibits a maximum covalency of 4, while the rest of the Group 14 elements can show a maximum covalency of 6. What is the fundamental reason for this difference?

15 / 50

15. For the catenated compounds of Germanium (germananes, ), the degree of catenation typically does not exceed:

16 / 50

16. The discovery of Buckminsterfullerene () in 1985 led to the awarding of the Nobel Prize in Chemistry in 1996 to which trio of scientists?

17 / 50

17. The polymerization reaction used to convert the hydrolyzed monomers () into long-chain silicone polymers is known as:

18 / 50

18. Feldspars and Zeolites are examples of which major class of silicates, characterized by a three-dimensional interlocking structure?

19 / 50

19. When Germanium forms chains (germanes, ), the maximum chain length observed is typically much shorter than that for alkanes. This is primarily because:

20 / 50

20. Orthoboric acid is often used in the form of a dilute aqueous solution for:

21 / 50

21. Which application of silicones makes direct use of their property as an electrical insulator?

22 / 50

22. How does the density of graphite compare to that of diamond, and what is the structural reason for the difference?

23 / 50

23. The simple catenated compounds of Silicon, analogous to alkanes, are highly reactive and known as:

24 / 50

24. What is the primary reason for the anomalous properties of Boron (B) compared to other Group 13 elements?

25 / 50

25. Moving down Group 14 from Carbon to Lead, how does the tendency of the electrons to remain paired (the inert pair effect) change?

26 / 50

26. Graphite is used as a moderator in nuclear reactors. This is due to its ability to:

27 / 50

27. When comparing the elements of Group 14, the bond energy (and thus the catenation tendency) decreases most significantly after which element?

28 / 50

28. Why do Gallium (Ga) and Indium (In) show only a +3 oxidation state, while Thallium (Tl) also shows a stable +1 oxidation state?

29 / 50

29. Diborane () is an electron-deficient compound. What is its common classification in terms of chemical bonding?

30 / 50

30. Boron is the only element in Group 13 that:

31 / 50

31. Which property of Carbon Dioxide makes it an effective agent in fire extinguishers?

32 / 50

32. is the most stable and common fullerene molecule. Its structure closely resembles a soccer ball. What is the common name given to this specific allotrope?

33 / 50

33. The stability of double bonds over single bonds is quantified by the difference in their bond enthalpies. For , the average bond enthalpy of is approximately:

34 / 50

34. Carbon dioxide () is a gas, whereas silicon dioxide () is a high melting point solid. This difference is due to:

35 / 50

35. Graphite is an excellent conductor of electricity. This property is due to the presence of:

36 / 50

36. Due to the availability of vacant -orbitals, Silicon readily shows an expanded octet in its compounds, such as in . What is the maximum covalency exhibited by Silicon in this ion?

37 / 50

37. Which of the following sets of elements constitutes the Group 14 (Carbon family)?

38 / 50

38. A fundamental reaction in the synthesis of elemental silicon involves the reduction of silica: . In this reaction, the is:

39 / 50

39. Which element in Group 13 has the valence shell electronic configuration ?

40 / 50

40. Which of the following ions is not likely to exist based on the configuration?

41 / 50

41. In terms of chemical reactivity, how do the catenated hydrides of Carbon () compare to the catenated hydrides of Silicon ()?

42 / 50

42. The structure of consists of a closed cage made up entirely of five-membered rings and six-membered rings. How many five-membered rings are present in the molecule?

43 / 50

43. Which of the following is a primary industrial use of Borax, apart from its use in the Borax Bead Test and as a flux?

44 / 50

44. The general formula for a natural zeolite can be represented as:

45 / 50

45. Which exceptional property of silicones makes them widely used as waterproofing materials and sealants?

46 / 50

46. Moving down Group 14 (C to Pb), how does the change in atomic radius typically proceed?

47 / 50

47. Which of the following is the standard laboratory method for preparing Carbon Dioxide () gas?

48 / 50

48. Silicones are noted for their high thermal stability compared to most carbon-based organic polymers. This is attributed to the strength of the:

49 / 50

49. Solid Carbon Dioxide, known as 'dry ice,' has a significant advantage over ordinary ice for cooling due to which unique physical process?

50 / 50

50. Among the Group 13 elements, which one forms the most stable unipositive ion ()?

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Practice P-Block Elements MCQs
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Class 11 Chemistry — Chapter 11: P-Block Elements Online Test

The Class 11 Chemistry: Chapter 11 – P-Block Elements Online Test offers an extensive collection of 277 MCQs designed to deepen your understanding of p-block elements and their properties. This test is free, NCERT/CBSE-aligned, and lets you practice at your own pace with unlimited attempts. Whether you’re aiming for a quick revision or preparing for exams like JEE or NEET, this test is an ideal resource to evaluate your knowledge.

This page acts as a mini online mock test for Chapter 11. You can practice multiple-choice questions (MCQs) and instantly see your results along with detailed explanations. Think of it as a real exam simulation that helps you boost your confidence before the actual test. This test is also great for those who wish to strengthen their knowledge of p-block elements, their chemical properties, and trends in the periodic table.

What is this Chapter 11: P-Block Elements Online Test?

This test consists of three exam-style MCQ papers for Chapter 11: P-Block Elements:

  • 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 277 MCQs
  • Paper 3 (Hard) — Challenge: 50 questions · 75 min · Pass 70% · Randomized from the same pool + Certificate on pass

Note: Each attempt gives you fresh mixes of questions in Paper 2 and Paper 3, ensuring a unique experience each time.

Topics covered in these online tests

The online test will guide you through a wide range of essential topics from Chapter 11: P-Block Elements. The key concepts include:

  • General Properties of p-block elements — their physical and chemical properties, and trends in groups and periods.
  • Electronic Configuration of p-block elements and how it relates to their properties.
  • Oxidation States of p-block elements, including trends and exceptions.
  • Trends in Group 13 Elements — Boron and its compounds, Aluminum, Gallium, etc.
  • Trends in Group 14 Elements — Carbon, Silicon, Germanium, Tin, Lead and their allotropes.
  • Trends in Group 15 Elements — Nitrogen, Phosphorus, Arsenic, Antimony, and their important compounds.
  • Trends in Group 16 Elements — Oxygen, Sulfur, Selenium, Tellurium, and Polonium.
  • Trends in Group 17 Elements — Halogens and their physical and chemical properties.
  • Group 18 Elements — Noble gases, their properties, compounds like Xenon compounds, etc.
  • Allotropes of Elements — Oxygen, Phosphorus, and Sulfur (e.g., allotropes of Carbon and Sulfur).
  • Industrial Applications — The industrial use of p-block elements, including the extraction of metals, and their role in chemical reactions.
  • Environmental Impact — The effects of p-block elements and their compounds on the environment (e.g., nitrogen oxides, sulfur compounds).

If you want more practice on the s-block elements, you can also visit the online test for S-Block Elements.

How This Exam-Style Online Test Works

  • Pick a paper → Answer MCQs within time → Submit → Get instant score and result with answer review.
  • MCQs: Each paper contains randomized questions from a large question pool.
  • Timer: Paper 1 is for 30 minutes, Paper 2 is for 45 minutes, and Paper 3 is for 75 minutes.
  • View Results: Get your score and an immediate review with correct answers.
  • Retake: You can retake the test as many times as needed to improve your score.

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, use Next/Prev to navigate.
  • Result Page: Instant result with correct/incorrect answers, detailed explanation, and the option to restart the 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 question pool; Paper 1 remains fixed.

Who can take this test?

  • Class 11 CBSE/NCERT students revising Chapter 11 on P-Block Elements.
  • JEE/NEET foundation aspirants building solid concepts in inorganic Chemistry.
  • Teachers and tutors using this as a practice tool for class assignments and quizzes.
  • Students from other boards and countries looking to practice P-Block Elements.
  • Students preparing for competitive exams seeking to solidify their knowledge of p-block elements.

Advantages of this online test

  • Real exam experience: Timed questions, instant feedback, and clear performance analysis.
  • Step-up difficulty: Foundation → Mixed → Challenge (+ certificate on Paper 3).
  • Unlimited attempts: Reattempt the test to improve your score with randomized questions in Paper 2 & 3.
  • Free of charge: No sign-up or payment required to access this comprehensive test.

How this test helps you study better

  • Step 1 – Concept check: Start with Paper 1 to check your grasp of basic P-Block element concepts.
  • Step 2 – Reinforce: Take Paper 2 for mixed concept and numerical questions.
  • Step 3 – Challenge yourself: Finish with Paper 3 to prepare for advanced-level questions and exams.
  • Step 4 – Analyze results: Study your missed questions and review the detailed answers to strengthen weak areas.

Important notes (read before you start)

  • Do not refresh / close the tab during the test.
  • Best experience: Use the latest version of Chrome/Edge and ensure a stable internet connection.
  • Allow cookies / local storage for a smooth experience and progress saving.
  • Safety: The test is 100% free, and there are no hidden charges or login requirements.

More practice for Class 11 Chemistry

After completing the P-Block Elements online test, continue your Chemistry practice with other resources: Class 11 Chemistry MCQ Collection or try the Class 11 Chemistry Online Test Index for other chapters.

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