Exam-Style Online Test | 11 Chemistry: P-Block Elements

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

Good luck! 👍

1 / 30

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

2 / 30

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

3 / 30

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

4 / 30

4. Carbon dioxide () is a gas, whereas silicon dioxide () is a high melting point solid. This difference is due to:

5 / 30

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

6 / 30

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

7 / 30

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

8 / 30

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

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

12. What is the fundamental difference in bonding that allows Carbon to form stable and multiple bonds, while the other elements in Group 14 primarily form single bonds, hindering their catenation potential?

13 / 30

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

14 / 30

14. 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?

15 / 30

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

16 / 30

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

17 / 30

17. By weight, which element is the most abundant metal in the Earth's crust?

18 / 30

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

19 / 30

19. Fullerenes exhibit chemical properties that classify them as:

20 / 30

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

21 / 30

21. In the natural world, the most common form of ring structure containing Group 14 elements is found in silicates, specifically those where tetrahedra link to form closed rings. What is the structural classification for silicates containing the ion (like in Beryl)?

22 / 30

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

23 / 30

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

24 / 30

24. The structure of consists of a closed cage made up entirely of five-membered rings and six-membered rings. How many five-membered rings are present in the molecule?

25 / 30

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

26 / 30

26. The starting material (monomer) used for the preparation of linear chain silicones is typically:

27 / 30

27. What is the fundamental building block of all silicate minerals?

28 / 30

28. The Borax Bead Test is used to identify colored metal ions. When a Borax bead is heated with a cobalt salt in the oxidizing flame, the resulting bead is:

29 / 30

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

30 / 30

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

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

2 / 50

2. 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:

3 / 50

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

4 / 50

4. Which statement accurately compares the natural occurrence of Boron (B) and Aluminium (Al)?

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

9. The addition of lead (II) chloride () to an aqueous solution containing a mild oxidizing agent (like water) results in the formation of lead (IV) chloride (). This difference in stability between the and oxidation states is best explained by:

10 / 50

10. 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:

11 / 50

11. 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?

12 / 50

12. In the natural world, the most common form of ring structure containing Group 14 elements is found in silicates, specifically those where tetrahedra link to form closed rings. What is the structural classification for silicates containing the ion (like in Beryl)?

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

17. Why does Silicon tetrachloride () readily undergo hydrolysis when exposed to moisture, while Carbon tetrachloride () is generally stable towards hydrolysis?

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

30. Borax is widely used as a flux in metallurgy (e.g., soldering or welding). The function of Borax as a flux is to:

31 / 50

31. Which set of reactants is used for the large-scale industrial preparation of Diborane?

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

35. Carbon () forms (carbon monoxide), a stable compound in the +2 oxidation state. Which factor contributes to the stability of despite Carbon's strong preference for the +4 state?

36 / 50

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

37 / 50

37. Which of the following is the chemical formula for the boron ore Colemanite?

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

42. The largest sink for anthropogenic is currently the world's oceans. What is the chemical consequence of the ocean absorbing large amounts of ?

43 / 50

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

44 / 50

44. The stability of the +1 oxidation state increases as we move down Group 13 (Al < Ga < In < Tl). This phenomenon is known as:

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

48. 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:

49 / 50

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

50 / 50

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

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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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