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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. The ability of an element to form bonds with atoms of the same element, leading to long chains or rings, is specifically termed:

2 / 30

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

3 / 30

3. 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:

4 / 30

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

5 / 30

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

6 / 30

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

7 / 30

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

8 / 30

8. 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:

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

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

13 / 30

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

14 / 30

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

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

17 / 30

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

18 / 30

18. Why is the atomic radius of Gallium (Ga) surprisingly smaller than that of Aluminium (Al)?

19 / 30

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

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

23. "Alumina" is the common name for which chemical compound?

24 / 30

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

25 / 30

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

26 / 30

26. Fullerenes exhibit chemical properties that classify them as:

27 / 30

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

28 / 30

28. Borax can be commercially prepared from the mineral Colemanite () by treating it with:

29 / 30

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

30 / 30

30. 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:

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

2 / 50

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

3 / 50

3. 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?

4 / 50

4. For industrial-scale production, Carbon Monoxide is typically prepared along with Hydrogen, forming a mixture known as water gas. Which reaction produces water gas?

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

9. The smallest stable cyclic alkane that exhibits planar geometry is:

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

13. The vast majority of organic compounds are based on Carbon chains and rings. What is the geometry of the Carbon atoms in a simple saturated linear chain, such as an -alkane?

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

19. What is the chemical formula for Bauxite, which is the principal ore of aluminium?

20 / 50

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

21 / 50

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

22 / 50

22. The Pyrosilicate (or Sorosilicate) structure is formed when two tetrahedra share how many oxygen atom(s) at one corner?

23 / 50

23. Carbon Monoxide acts as a powerful reducing agent, especially at high temperatures. Which reaction illustrates reducing a metal oxide?

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

31. The industrial preparation of water gas () from coke () and steam (): is an example of a reaction that is highly:

32 / 50

32. The thickness of a graphene sheet is defined by the diameter of a single atom. Approximately how thick is a sheet of graphene?

33 / 50

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

34 / 50

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

35 / 50

35. Which of the following compounds is the most stable in the +2 oxidation state?

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

42. When hydrated aluminium chloride, , is heated strongly in air, what is the major stable solid product formed?

43 / 50

43. The general formula for a natural zeolite can be represented as:

44 / 50

44. 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?

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

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

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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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