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

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

4 / 30

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

5 / 30

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

6 / 30

6. Although is highly unreactive, it is attacked by concentrated hot sodium hydroxide (). The products of this reaction are:

7 / 30

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

8 / 30

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

9 / 30

9. In the process of photosynthesis, Carbon Dioxide is utilized by plants. What is the primary chemical product of this process?

10 / 30

10. 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:

11 / 30

11. The electronic configuration of Thallium (Tl, Z=81) includes a filled subshell. What is its valence shell configuration?

12 / 30

12. 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)?

13 / 30

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

14 / 30

14. 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:

15 / 30

15. Silicones in the form of oils and greases are widely used as lubricants, especially for specialized equipment. This application is due to their stability in which two extreme conditions?

16 / 30

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

17 / 30

17. Carbon Monoxide reacts with heated powdered nickel metal () to form (nickel tetracarbonyl). This specific reaction is classified as a:

18 / 30

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

19 / 30

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

20 / 30

20. In the excited state, an element with the general configuration promotes an electron to achieve a valency of 4. What is the resulting hybridization in a simple tetravalent compound like ?

21 / 30

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

22 / 30

22. In the class of silicates known as Tectosilicates (Framework Silicates), what fraction of the oxygen atoms are shared by each tetrahedron with its neighbors?

23 / 30

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

24 / 30

24. Solid Carbon Dioxide, known as 'dry ice,' has a significant advantage over ordinary ice for cooling due to which unique physical process?

25 / 30

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

26 / 30

26. Carbon Monoxide is a fatal poison because it binds strongly to which component of the blood?

27 / 30

27. Graphene is structurally best described as:

28 / 30

28. 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?

29 / 30

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

30 / 30

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

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

2 / 50

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

3 / 50

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

4 / 50

4. Clay minerals and Micas are excellent examples of which type of silicate structure?

5 / 50

5. Carbon Monoxide is a fatal poison because it binds strongly to which component of the blood?

6 / 50

6. Moving down Group 14 (C to Pb), how does the change in atomic radius typically proceed?

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

17. What is the general name given to the class of organosilicon polymers that form both chains and rings with the backbone?

18 / 50

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

19 / 50

19. 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?

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

26. Among the elements of Group 14 (), which element exhibits the maximum tendency for catenation?

27 / 50

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

28 / 50

28. The major source of high-purity Carbon Monoxide () for specific industrial chemical syntheses (like the preparation of metal carbonyls) is through the dehydration of which acid using concentrated sulfuric acid?

29 / 50

29. The p-block elements are unique because their members include:

30 / 50

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

31 / 50

31. When Carbon Dioxide is passed through an aqueous solution of sodium hydroxide (), the reaction occurs. This reaction demonstrates the acidic nature of and is an example of which reaction type?

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

40. 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?

41 / 50

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

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

46. 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?

47 / 50

47. When highly purified is treated with concentrated aqueous solution, the products are sodium silicate () and hydrogen gas (). This reaction classifies as a substance that is:

48 / 50

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

49 / 50

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

50 / 50

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

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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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