Exam-Style Online Test | 11 Chemistry: P-Block Elements
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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. The dimeric structure of aluminium chloride, , forms primarily to:

2 / 30

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

3 / 30

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

4 / 30

4. Following up on the previous question, how many six-membered rings (hexagons) are present in the molecule?

5 / 30

5. Diborane () can be prepared in the laboratory by the reaction of iodine () with which reducing agent?

6 / 30

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

7 / 30

7. Boron trihalides (like ) act as Lewis acids. This is primarily because:

8 / 30

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

9 / 30

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

10 / 30

10. 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)?

11 / 30

11. 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:

12 / 30

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

13 / 30

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

14 / 30

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

15 / 30

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

16 / 30

16. Graphite is commonly used as a lubricant and in pencil lead because of which physical property?

17 / 30

17. Diamond possesses an exceptionally high melting point (subliming at around ). This is due to the need to overcome which forces/bonds?

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

20 / 30

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

21 / 30

21. The chemical name of Borax () is:

22 / 30

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

23 / 30

23. 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?

24 / 30

24. In which direction is the electrical conductivity of graphite most efficient?

25 / 30

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

26 / 30

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

27 / 30

27. 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?

28 / 30

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

29 / 30

29. 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?

30 / 30

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

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

2 / 50

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

3 / 50

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

4 / 50

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

5 / 50

5. 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?

6 / 50

6. Which statement accurately compares the hydrolysis of the tetrachlorides of Carbon and Silicon?

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

10. Unlike other Group 13 elements, Boron forms stable hydrides called boranes (e.g., Diborane, ). What is a key feature of these compounds?

11 / 50

11. What is the combined state of carbon that is the main constituent of marble, chalk, and limestone?

12 / 50

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

13 / 50

13. Feldspars and Zeolites are examples of which major class of silicates, characterized by a three-dimensional interlocking structure?

14 / 50

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

15 / 50

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

16 / 50

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 / 50

17. What is the correct trend for electronegativity (EN) down Group 13?

18 / 50

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

19 / 50

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

20 / 50

20. Following up on the previous question, how many six-membered rings (hexagons) are present in the molecule?

21 / 50

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

22 / 50

22. Single-walled carbon nanotubes (SWCNTs) are often bundled together into ropes. The individual tubes within a rope are held together by:

23 / 50

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

24 / 50

24. 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)?

25 / 50

25. Where are the p-block elements located in the modern periodic table?

26 / 50

26. 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?

27 / 50

27. The decomposition of limestone: is used for the industrial production of lime. This reaction is classified as:

28 / 50

28. 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 ()?

29 / 50

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

30 / 50

30. The reaction is a fundamental process in metallurgy. What type of reaction is best exemplified by this equation?

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

33 / 50

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

34 / 50

34. 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?

35 / 50

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

36 / 50

36. is the most stable and common fullerene molecule. Its structure closely resembles a soccer ball. What is the common name given to this specific allotrope?

37 / 50

37. What is the "inert pair effect"?

38 / 50

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

39 / 50

39. Diborane () can be prepared in the laboratory by the reaction of iodine () with which reducing agent?

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

42 / 50

42. 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?

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

47. Fullerenes exhibit chemical properties that classify them as:

48 / 50

48. 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)?

49 / 50

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

50 / 50

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

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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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