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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 ions is not likely to exist based on the configuration?

2 / 30

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

3 / 30

3. What is the standard and most effective first-aid treatment for severe Carbon Monoxide poisoning?

4 / 30

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

5 / 30

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

6 / 30

6. Which of the following compounds is gaseous at room temperature due to Carbon's ability to form multiple bonds?

7 / 30

7. Carbon Dioxide is classified as an acidic oxide. Which of the following chemical reactions demonstrates this property?

8 / 30

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

9 / 30

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

10 / 30

10. 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?

11 / 30

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

12 / 30

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

13 / 30

13. In single-chain silicates (Pyroxenes), how many oxygen atoms does each silicon tetrahedron share with other tetrahedra?

14 / 30

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

15 / 30

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

16 / 30

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

17 / 30

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

18 / 30

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

19 / 30

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

20 / 30

20. 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?

21 / 30

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

22 / 30

22. When Carbon is heated with concentrated nitric acid (), the products are , , and . In this reaction, the acts as:

23 / 30

23. 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:

24 / 30

24. 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?

25 / 30

25. 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?

26 / 30

26. 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:

27 / 30

27. The vast diversity of silicate minerals is a result of the ability of the units to link up by sharing various numbers of which atoms?

28 / 30

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

29 / 30

29. 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?

30 / 30

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

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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. When anhydrous dissolves in water, the solution becomes acidic. Which chemical equilibrium explains this acidity?

2 / 50

2. 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:

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

6. 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?

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

12. 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?

13 / 50

13. 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?

14 / 50

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

15 / 50

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

16 / 50

16. What is the specific geometry surrounding each carbon atom in the diamond lattice?

17 / 50

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

18 / 50

18. 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?

19 / 50

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

20 / 50

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

21 / 50

21. Which factor is the primary determinant of the extent of catenation for an element?

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

25. 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:

26 / 50

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

27 / 50

27. 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?

28 / 50

28. Which of the following properties is not a reason for the anomalous behavior of Boron?

29 / 50

29. Which of the following compounds is gaseous at room temperature due to Carbon's ability to form multiple bonds?

30 / 50

30. Which of the following elements, due to its configuration and access to vacant -orbitals, readily expands its covalency beyond 4?

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

35. How does the density of diamond compare to the density of graphite?

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

41. The reaction used in the synthesis of silicone polymers, where groups react to form bonds while eliminating water (), is an example of:

42 / 50

42. How does the allotropic form of Boron differ from that of Aluminium?

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

50. Which statement correctly describes the bonding present in the Carbon Monoxide () molecule?

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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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