Exam-Style Online Test | 11 Chemistry: P-Block Elements

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

2 / 30

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

3 / 30

3. What type of bonding is responsible for holding the two units together via the bridging chlorine atoms in the dimer?

4 / 30

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

5 / 30

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

6 / 30

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

7 / 30

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

8 / 30

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

9 / 30

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

10 / 30

10. The ability of an element to form bonds with atoms of the same element, leading to long chains or rings, is specifically termed:

11 / 30

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

12 / 30

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

13 / 30

13. Which element is capable of forming a stable hexacoordinate complex anion, where its atom is bonded to six atoms?

14 / 30

14. What is the fundamental difference in bonding that allows Carbon to form stable and multiple bonds, while the other elements in Group 14 primarily form single bonds, hindering their catenation potential?

15 / 30

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

16 / 30

16. Orthosilicates (or Nesosilicates) are characterized by which structural feature?

17 / 30

17. When comparing the stability of the tetrahalides () and dihalides () of Lead (), which conclusion is correct?

18 / 30

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

19 / 30

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

20 / 30

20. The stability of the +1 oxidation state increases as we move down Group 13 (Al < Ga < In < Tl). This phenomenon is known as:

21 / 30

21. Which statement correctly compares the bond lengths in diborane ()?

22 / 30

22. 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:

23 / 30

23. What are the hybridization and geometry of the aluminium atom in the ion?

24 / 30

24. Which of the following describes the geometry of the terminal bonds in diborane, ?

25 / 30

25. Which of the following elements has the ground state valence shell electronic configuration ?

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

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

30 / 30

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

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

2 / 50

2. Graphene is structurally best described as:

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

8. 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?

9 / 50

9. The electronic configuration of Thallium (Tl, Z=81) includes a filled subshell. What is its valence shell configuration?

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

16. Zeolites are a class of microporous, crystalline materials. Chemically, they are classified as:

17 / 50

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

18 / 50

18. What is the fundamental difference in bonding that allows Carbon to form stable and multiple bonds, while the other elements in Group 14 primarily form single bonds, hindering their catenation potential?

19 / 50

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

20 / 50

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

21 / 50

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

22 / 50

22. Which factor causes small cycloalkanes, such as cyclopropane (), to be highly reactive compared to larger rings like cyclohexane?

23 / 50

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

24 / 50

24. The structure of (silica) is a giant three-dimensional network, while is a discrete monomeric molecule. This difference is mainly attributed to:

25 / 50

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

26 / 50

26. What is a key property that distinguishes fullerenes from diamond and graphite, which are purely covalent network solids?

27 / 50

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

28 / 50

28. Which naturally occurring form of carbon is generally used as a lubricant and as an electrode material due to its layer structure?

29 / 50

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

30 / 50

30. Multi-walled carbon nanotubes (MWCNTs) consist of several concentric tubes. The distance between these concentric walls is closest to the interlayer spacing found in:

31 / 50

31. Which of the following compounds is the most stable in the +2 oxidation state?

32 / 50

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

33 / 50

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

34 / 50

34. In the Friedel-Crafts alkylation reaction, which species is created when the Lewis acid reacts with the alkyl halide ()?

35 / 50

35. 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?

36 / 50

36. What is the general name given to the class of organosilicon polymers that form both chains and rings with the backbone?

37 / 50

37. 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?

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

41. Borax is widely used as a flux in metallurgy (e.g., soldering or welding). The function of Borax as a flux is to:

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

47. How many valence electrons are present in the elements of the Boron family?

48 / 50

48. The anhydrous crystalline form of Alumina () is known as Corundum. What are the gem-quality varieties of Corundum?

49 / 50

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

50 / 50

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

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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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