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

2 / 30

2. Carbon can be used to reduce almost all metal oxides at high temperatures. However, carbon reduction is ineffective for reducing Aluminum Oxide () under similar conditions. This is because:

3 / 30

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

4 / 30

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

5 / 30

5. To produce a highly rigid, three-dimensional (cross-linked) silicone polymer rather than a linear chain, which monomer must be incorporated along with ?

6 / 30

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

7 / 30

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

8 / 30

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

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

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

13 / 30

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

14 / 30

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

15 / 30

15. 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?

16 / 30

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

17 / 30

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

18 / 30

18. Which of the following compounds is the strongest reducing agent?

19 / 30

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

20 / 30

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

21 / 30

21. Silicon forms with a giant three-dimensional network structure. Why does Silicon not form a simple double-bonded molecule analogous to ?

22 / 30

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

23 / 30

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

24 / 30

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

25 / 30

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

26 / 30

26. What is the most common and stable oxidation state for Boron (B) and Aluminium (Al)?

27 / 30

27. How does the stability of multiple bonds compare to that of hypothetical multiple bonds?

28 / 30

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

29 / 30

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

30 / 30

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

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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. The polymerization reaction used to convert the hydrolyzed monomers () into long-chain silicone polymers is known as:

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

8. 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?

9 / 50

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

10 / 50

10. 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?

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

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

20 / 50

20. 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?

21 / 50

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

22 / 50

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

23 / 50

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

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 diborane ()?

26 / 50

26. When comparing the elements of Group 14, the bond energy (and thus the catenation tendency) decreases most significantly after which element?

27 / 50

27. Diamond is the hardest known natural substance. This property is directly attributable to:

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

32. What chemical reagent is added during the titration of a Boric acid solution to make it strong enough to be titrated against a strong base ()?

33 / 50

33. 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)?

34 / 50

34. The first element of each p-block group shows anomalous behavior. This is primarily due to:

35 / 50

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

36 / 50

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

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

39 / 50

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

40 / 50

40. 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?

41 / 50

41. In a Sheet Silicate (Phyllosilicate), what is the resulting formula for the silicate anion?

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

50. For the catenated compounds of Germanium (germananes, ), the degree of catenation typically does not exceed:

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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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