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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

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1 / 30

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

2 / 30

2. Due to its inability to form stable bonds, Silicon is prone to reacting with nucleophiles like water. This reaction is called:

3 / 30

3. The first ionization enthalpy () generally decreases down Group 14. Which element disrupts this smooth trend by exhibiting a higher than the element immediately above it?

4 / 30

4. In the process of photosynthesis, Carbon Dioxide is utilized by plants. What is the primary chemical product of this process?

5 / 30

5. The industrial preparation of water gas () from coke () and steam (): is an example of a reaction that is highly:

6 / 30

6. The configuration results in a common oxidation state of +4 for all Group 14 elements. Which of the following is also a prominent and stable oxidation state, particularly for the heavier elements (Sn, Pb)?

7 / 30

7. How many valence electrons surround the central aluminium atom in a gaseous monomer, and what does this imply about its properties?

8 / 30

8. Carbon Monoxide () is stable at room temperature but can undergo disproportionation at higher temperatures (). Which equation correctly represents the products of this disproportionation reaction?

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

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

13 / 30

13. Orthoboric acid acts as a weak acid in water, but it is unique because it is not a proton donor. Instead, it acts as a Lewis acid by:

14 / 30

14. Boron is unable to form ions, whereas Aluminium can form ions. Why?

15 / 30

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

16 / 30

16. Silicones can exist in various physical forms, ranging from viscous liquids (oils) to rubbery solids (elastomers) and hard resins. The final form of the silicone material is primarily determined by:

17 / 30

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

18 / 30

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

19 / 30

19. The smallest stable cyclic alkane that exhibits planar geometry is:

20 / 30

20. Carbon Monoxide reacts with heated powdered nickel metal () to form (nickel tetracarbonyl). This specific reaction is classified as a:

21 / 30

21. Which element in Group 13 is a non-metal, while the others are metals?

22 / 30

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

23 / 30

23. Which element, due to its size difference from Oxygen, primarily forms stable bonds (if any), rather than bonds?

24 / 30

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

25 / 30

25. How does Boron (B) primarily occur in nature?

26 / 30

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

27 / 30

27. In the natural world, the most common form of ring structure containing Group 14 elements is found in silicates, specifically those where tetrahedra link to form closed rings. What is the structural classification for silicates containing the ion (like in Beryl)?

28 / 30

28. What is the general valence shell electronic configuration for the p-block elements?

29 / 30

29. What is the correct trend for electronegativity (EN) down Group 13?

30 / 30

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

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

2 / 50

2. Where are the p-block elements located in the modern periodic table?

3 / 50

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

4 / 50

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

5 / 50

5. In which direction is the electrical conductivity of graphite most efficient?

6 / 50

6. The classic qualitative test for the presence of gas involves bubbling the gas through limewater (aqueous ). The initial observation that confirms the presence of is:

7 / 50

7. The major industrial use of zeolites is in the petrochemical industry for the process of:

8 / 50

8. 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?

9 / 50

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

10 / 50

10. Which element in Group 13 is a non-metal, while the others are metals?

11 / 50

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

12 / 50

12. Carbon Monoxide reacts with heated powdered nickel metal () to form (nickel tetracarbonyl). This specific reaction is classified as a:

13 / 50

13. The stability of the oxidation state among Group 14 elements:

14 / 50

14. The presence of a completely filled -subshell in Gallium () leads to:

15 / 50

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

16 / 50

16. The reaction of Carbon Monoxide with water vapor at high temperatures in the presence of a catalyst is known as the Water Gas Shift reaction. What are the products of this reversible reaction?

17 / 50

17. What gives diamond its exceptional brilliance and sparkle (high lustre)?

18 / 50

18. The dimeric structure of aluminium chloride, , forms primarily to:

19 / 50

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

20 / 50

20. Boron (B) has an exceptionally high first ionization enthalpy () compared to the rest of Group 13. This is primarily because:

21 / 50

21. If the only monomer used in the preparation process is (Trialkylchlorosilane), what type of product will be formed?

22 / 50

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

23 / 50

23. The empirical formula of Orthoboric acid is . What is the corresponding general formula for the acid derived from Boron trioxide ()?

24 / 50

24. Borane (), the monomer of diborane, is highly unstable at room temperature because:

25 / 50

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

26 / 50

26. The group of silicates known as Amphiboles (e.g., hornblende) are classified as which type of silicate structure?

27 / 50

27. What is the correct trend for electronegativity (EN) down Group 13?

28 / 50

28. What is the hybridization of the carbon atoms in the diamond crystal structure?

29 / 50

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

30 / 50

30. When heated strongly in the presence of air or pure oxygen, diamond will react to form:

31 / 50

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

32 / 50

32. In which of the following natural states does carbon primarily exist in the atmosphere?

33 / 50

33. What property of zeolites makes them widely used in water softening and detergent formulations?

34 / 50

34. The electrical properties of a single-walled carbon nanotube (SWCNT) can vary significantly depending on its "chirality." A carbon nanotube can exhibit the electrical properties of which two material types?

35 / 50

35. Quartz is the most common example of a Tectosilicate. If aluminum () replaces some of the silicon () atoms in a Tectosilicate framework, what is the chemical consequence?

36 / 50

36. The stability of double bonds is primarily a result of Carbon's:

37 / 50

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

38 / 50

38. Orthoboric acid () can be prepared by treating Borax () with:

39 / 50

39. In the structural tetraborate anion of crystalline Borax, the number of Boron atoms that are hybridized and hybridized are:

40 / 50

40. Borax can be commercially prepared from the mineral Colemanite () by treating it with:

41 / 50

41. For industrial-scale production, Carbon Monoxide is typically prepared along with Hydrogen, forming a mixture known as water gas. Which reaction produces water gas?

42 / 50

42. Which set of reactants is preferred for the preparation of anhydrous aluminium chloride, ?

43 / 50

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

44 / 50

44. The formation of (Silicon Carbide, Carborundum) from (sand) and (coke) at represents which type of high-temperature synthesis reaction?

45 / 50

45. Which of the following characteristics is directly caused by the configuration where the valence shell is exactly half-filled?

46 / 50

46. A unique property of fullerenes is their ability to trap metal ions or noble gas atoms inside the carbon cage without chemical bonding. What is the term used to describe these encapsulated fullerene compounds?

47 / 50

47. 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?

48 / 50

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

49 / 50

49. The thickness of a graphene sheet is defined by the diameter of a single atom. Approximately how thick is a sheet of graphene?

50 / 50

50. In the excited state, an element with the general configuration promotes an electron to achieve a valency of 4. What is the resulting hybridization in a simple tetravalent compound like ?

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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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