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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. In the Group 14 elements, the dioxide () is generally more stable than the monoxide (). However, for Tin, the stability of the oxides is reversed at very high temperatures. Which statement accurately describes the thermal stability of tin oxides?

2 / 30

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

3 / 30

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

4 / 30

4. Which of the following compounds of Silicon is unstable and highly reactive, contrasting with the stable double-bonded organic compounds of Carbon?

5 / 30

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

6 / 30

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

7 / 30

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

8 / 30

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

9 / 30

9. What is the nature of the aqueous solution of Borax?

10 / 30

10. Which of the following is NOT a form in which carbon occurs in the free (elemental) state?

11 / 30

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

12 / 30

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

13 / 30

13. Which statement correctly describes the nature of the halides () formed by Group 14 elements?

14 / 30

14. The most significant reason for the differences in the chemical properties of Carbon compared to Silicon is:

15 / 30

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

16 / 30

16. When highly purified is treated with concentrated aqueous solution, the products are sodium silicate () and hydrogen gas (). This reaction classifies as a substance that is:

17 / 30

17. The reaction used to prepare Calcium Carbide () from quicklime and coke: requires extremely high temperatures. This is fundamentally a reaction where acts as a:

18 / 30

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

19 / 30

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

20 / 30

20. In the Water Gas Shift reaction: , how does the oxidation state of Carbon change?

21 / 30

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

22 / 30

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

23 / 30

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

24 / 30

24. What is the key structural feature of zeolites that allows for their selective uses in separation and catalysis?

25 / 30

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

26 / 30

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

27 / 30

27. What is the hybridization of the carbon atoms within the layers of the graphite structure?

28 / 30

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

29 / 30

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

30 / 30

30. Carbon Monoxide is a fatal poison because it binds strongly to which component of the blood?

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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. Carbon, the first element of Group 14, is known to form extended chains and rings through self-linking. What is this property called?

2 / 50

2. Among the elements of Group 14 (), which element exhibits the maximum tendency for catenation?

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

6. The Carbon Dioxide molecule has a linear shape. What is the hybridization of the central carbon atom in and the bond angle, respectively?

7 / 50

7. The vast majority of organic compounds are based on Carbon chains and rings. What is the geometry of the Carbon atoms in a simple saturated linear chain, such as an -alkane?

8 / 50

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

9 / 50

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

10 / 50

10. 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?

11 / 50

11. The formation of stable ring and chain structures in Silicon chemistry is mainly achieved when the Silicon atoms are separated by which bridging element?

12 / 50

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

13 / 50

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

14 / 50

14. Diamond is classified as which type of solid?

15 / 50

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

16 / 50

16. Cryolite is a mineral essential for the electrolytic extraction of aluminium. Its chemical formula is:

17 / 50

17. In the Group 14 elements, the dioxide () is generally more stable than the monoxide (). However, for Tin, the stability of the oxides is reversed at very high temperatures. Which statement accurately describes the thermal stability of tin oxides?

18 / 50

18. When Borax is heated strongly, it loses water of crystallization and swells up. On further heating, it turns into a transparent, glassy mass known as:

19 / 50

19. What is the "inert pair effect"?

20 / 50

20. Which statement correctly describes a key difference between and its homologue (silica)?

21 / 50

21. 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?

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

37. 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)?

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

42. The major source of high-purity Carbon Monoxide () for specific industrial chemical syntheses (like the preparation of metal carbonyls) is through the dehydration of which acid using concentrated sulfuric acid?

43 / 50

43. 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:

44 / 50

44. 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?

45 / 50

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

46 / 50

46. What is the key structural feature of zeolites that allows for their selective uses in separation and catalysis?

47 / 50

47. The most significant reason for the differences in the chemical properties of Carbon compared to Silicon is:

48 / 50

48. The reaction used to prepare Calcium Carbide () from quicklime and coke: requires extremely high temperatures. This is fundamentally a reaction where acts as a:

49 / 50

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

50 / 50

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

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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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