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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

Good luck! 👍

1 / 30

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

2 / 30

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

3 / 30

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

4 / 30

4. 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:

5 / 30

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

6 / 30

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

7 / 30

7. A fundamental reaction in the synthesis of elemental silicon involves the reduction of silica: . In this reaction, the is:

8 / 30

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

9 / 30

9. 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:

10 / 30

10. 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:

11 / 30

11. 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?

12 / 30

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

13 / 30

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

14 / 30

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

15 / 30

15. The polymerization reaction used to convert the hydrolyzed monomers () into long-chain silicone polymers is known as:

16 / 30

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

17 / 30

17. Which reactant is commonly used for the laboratory preparation of pure Carbon Monoxide ()?

18 / 30

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

19 / 30

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

20 / 30

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

21 / 30

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

22 / 30

22. Diborane () is an electron-deficient compound. What is its common classification in terms of chemical bonding?

23 / 30

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

24 / 30

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

25 / 30

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

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

29. Carbon's maximum oxidation state of +4 is strongly preferred. While Silicon also prefers +4, it rarely shows a stable +2 state. This difference suggests that the Inert Pair Effect is:

30 / 30

30. 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?

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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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Get new questions with every attempt

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

2 / 50

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

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

6. The discovery of Buckminsterfullerene () in 1985 led to the awarding of the Nobel Prize in Chemistry in 1996 to which trio of scientists?

7 / 50

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

8 / 50

8. In the structure of Quartz, a form of silica (), how many oxygen atoms are shared between adjacent tetrahedra?

9 / 50

9. 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:

10 / 50

10. Which of the following sets of elements constitutes the Group 14 (Carbon family)?

11 / 50

11. 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?

12 / 50

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

13 / 50

13. What type of intermolecular forces holds the parallel hexagonal layers of graphite together?

14 / 50

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

15 / 50

15. Fullerenes exhibit chemical properties that classify them as:

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

34. Kernite (or Rasorite) is the second most important ore of boron. What is its chemical formula?

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

38. 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?

39 / 50

39. 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?

40 / 50

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

41 / 50

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

42 / 50

42. 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?

43 / 50

43. 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?

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

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

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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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