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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

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1 / 30

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

2 / 30

2. What is the specific general electronic configuration for Group 13 elements?

3 / 30

3. 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 ()?

4 / 30

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

5 / 30

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

6 / 30

6. Which of the following statements correctly describes the bonding ability that is unique to Carbon within Group 14?

7 / 30

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

8 / 30

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

9 / 30

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

10 / 30

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

11 / 30

11. Why is graphene considered to be a much more promising material than graphite for transparent, flexible electronic devices?

12 / 30

12. 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?

13 / 30

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

14 / 30

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

15 / 30

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

16 / 30

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

17 / 30

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

18 / 30

18. Fullerenes exhibit chemical properties that classify them as:

19 / 30

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

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

23. 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:

24 / 30

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

25 / 30

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

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

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

30 / 30

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

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

2 / 50

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

3 / 50

3. 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:

4 / 50

4. How does Boron (B) primarily occur in nature?

5 / 50

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

6 / 50

6. Tin (II) salts () are often used in volumetric analysis because they can easily act as a reducing agent. This is primarily because can easily be converted to:

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

13. Silicones can exist in various physical forms, ranging from viscous liquids (oils) to rubbery solids (elastomers) and hard resins. The final form of the silicone material is primarily determined by:

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

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

20 / 50

20. In the structure of diborane (), how many (two-center, two-electron) terminal bonds are present?

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. What is the "inert pair effect"?

23 / 50

23. Why does Lead () show virtually no catenation?

24 / 50

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

25 / 50

25. The chemical equation describes the etching of glass (silica). In this reaction, the role of is unique because:

26 / 50

26. Unlike , the hydrolysis of proceeds rapidly. If (Germanium tetrachloride) were subjected to the same conditions, what would be the expected relative rate of hydrolysis compared to ?

27 / 50

27. The non-metallic character in the p-block elements:

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

31. Graphite is an excellent conductor of electricity. This property is due to the presence of:

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

35. Unlike diamond, graphite is thermodynamically more stable at standard conditions. This is reflected by the enthalpy change () of the conversion reaction: . The value of for this reaction is:

36 / 50

36. Diamond is classified as which type of solid?

37 / 50

37. The chemical name of Borax () is:

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

41. The classic qualitative test for the presence of gas involves bubbling the gas through limewater (aqueous ). The initial observation that confirms the presence of is:

42 / 50

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

43 / 50

43. Which set of reactants is preferred for the preparation of anhydrous aluminium chloride, ?

44 / 50

44. 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?

45 / 50

45. 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?

46 / 50

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

47 / 50

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

48 / 50

48. The electronic configuration of Gallium (Ga, Z=31) is . Why is the orbital completely filled?

49 / 50

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

50 / 50

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

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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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