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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

Good luck! 👍

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

2 / 30

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

3 / 30

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

4 / 30

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

5 / 30

5. What are the maximum covalent bonding capacities (covalencies) typically exhibited by Carbon and Silicon, respectively?

6 / 30

6. Carbon Monoxide is classified as a Lewis base because:

7 / 30

7. What is the general anion formula for a Cyclic Silicate (or Cyclosilicate), such as the ion found in the mineral beryl?

8 / 30

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

9 / 30

9. When orthoboric acid () is treated with excess ethanol () in the presence of concentrated , the product formed is:

10 / 30

10. Which reactant is commonly used for the laboratory preparation of pure Carbon Monoxide ()?

11 / 30

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

12 / 30

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

13 / 30

13. What is the complete electronic configuration of Aluminium (Al, Z=13)?

14 / 30

14. How does the first ionization enthalpy () of Aluminium compare to that of Gallium?

15 / 30

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

16 / 30

16. 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?

17 / 30

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

18 / 30

18. The starting material (monomer) used for the preparation of linear chain silicones is typically:

19 / 30

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

20 / 30

20. The chemical name of Borax () is:

21 / 30

21. The largest sink for anthropogenic is currently the world's oceans. What is the chemical consequence of the ocean absorbing large amounts of ?

22 / 30

22. In the structure of diborane (), how many (two-center, two-electron) terminal bonds are present?

23 / 30

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

24 / 30

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

25 / 30

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

26 / 30

26. When water is added to calcium carbide (), the products are calcium hydroxide () and acetylene gas (). This reaction is specifically classified as:

27 / 30

27. What is the correct order of atomic radii for Group 13 elements?

28 / 30

28. 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 ?

29 / 30

29. The p-block elements are unique because their members include:

30 / 30

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

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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. Due to the inert pair effect, which oxidation state becomes more stable for the heavier elements of Group 14?

2 / 50

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

3 / 50

3. 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)?

4 / 50

4. Which form of naturally occurring carbon is the hardest known natural substance and possesses a giant tetrahedral structure?

5 / 50

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

6 / 50

6. While Carbon forms long stable chains with itself, Silicon catenation is often observed in chains where the Silicon atoms are separated by which bridging atom?

7 / 50

7. Fullerenes are typically soluble in organic solvents, exhibiting a distinctive color. What is the color of the solution in solvents like toluene or benzene?

8 / 50

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

9 / 50

9. The greenhouse effect is caused by certain gases in the atmosphere absorbing and re-emitting which type of radiation emitted from the Earth's surface?

10 / 50

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

11 / 50

11. Which of the following statements correctly describes the bonding ability that is unique to Carbon within Group 14?

12 / 50

12. Fullerenes exhibit chemical properties that classify them as:

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

16. The structure of graphite is composed of flat, two-dimensional layers. The bonding within these layers is:

17 / 50

17. Which statement accurately compares the natural occurrence of Boron (B) and Aluminium (Al)?

18 / 50

18. 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:

19 / 50

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

20 / 50

20. Carbon Nanotubes (CNTs) are structurally derived from which other carbon allotrope?

21 / 50

21. The reaction (or the formation of silanol intermediates) is a critical step in the synthesis of silicone polymers. What type of reaction is this?

22 / 50

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

23 / 50

23. What is the hybridization of the Boron atom in diborane ()?

24 / 50

24. Carbon Monoxide acts as a powerful reducing agent, especially at high temperatures. Which reaction illustrates reducing a metal oxide?

25 / 50

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

26 / 50

26. The bond length within a graphite layer is approximately . This value lies between the bond length of a single bond () and a double bond (). This is evidence for:

27 / 50

27. What are the maximum covalent bonding capacities (covalencies) typically exhibited by Carbon and Silicon, respectively?

28 / 50

28. What is the fundamental building block of all silicate minerals?

29 / 50

29. What is the "inert pair effect"?

30 / 50

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

31 / 50

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

32 / 50

32. Unlike , the hydrolysis of proceeds rapidly. If (Germanium tetrachloride) were subjected to the same conditions, what would be the expected relative rate of hydrolysis compared to ?

33 / 50

33. 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 ?

34 / 50

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

35 / 50

35. Unlike diamond, graphite is thermodynamically more stable at standard conditions. This is reflected by the enthalpy change () of the conversion reaction: . The value of for this reaction is:

36 / 50

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

37 / 50

37. Which element in Group 13 almost exclusively shows a +3 oxidation state in its compounds?

38 / 50

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

39 / 50

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

40 / 50

40. Which comparison of bond dissociation enthalpies for Group 14 single bonds is correct?

41 / 50

41. The value of is . This indicates that it is a:

42 / 50

42. The use of zeolites as catalysts is primarily based on the principle of 'shape-selective catalysis'. This means the catalytic reaction is dependent on:

43 / 50

43. In the class of silicates known as Tectosilicates (Framework Silicates), what fraction of the oxygen atoms are shared by each tetrahedron with its neighbors?

44 / 50

44. The correct structural representation of the tetraborate anion present in crystalline Borax () is:

45 / 50

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

46 / 50

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

47 / 50

47. 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)?

48 / 50

48. 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?

49 / 50

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

50 / 50

50. 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?

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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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