JEE Main - Properties and trends of p-block elements group 13 to 18 Online Test (MCQ Quiz)

1. Which of the following elements is a metalloid and belongs to Group 13?

A) Aluminum B) Gallium C) Boron D) Indium

2. What is the common oxidation state of Group 13 elements?

A) +1 and +3 B) +2 and +4 C) +3 D) +1

3. Which element in Group 14 has the strongest tendency to form covalent compounds?

A) Carbon B) Silicon C) Germanium D) Tin

4. The inert pair effect is most pronounced in which group?

A) Group 13 B) Group 14 C) Group 15 D) Group 16

5. Which allotrope of carbon is the hardest natural substance?

A) Graphite B) Diamond C) Fullerene D) Graphene

6. Which is the most electronegative element in Group 16?

A) Sulfur B) Selenium C) Tellurium D) Oxygen

7. The acidic character of oxides of Group 13 elements generally increases or decreases down the group?

A) Increases B) Decreases C) Remains the same D) First increases then decreases

8. Which element in Group 14 commonly exhibits an oxidation state of +2 due to the inert pair effect?

A) Carbon B) Silicon C) Lead D) Tin

9. The maximum number of covalent bonds formed by nitrogen is:

A) 3 B) 4 C) 5 D) 2

10. Which element in Group 16 is a liquid at room temperature?

A) Sulfur B) Selenium C) Tellurium D) Bromine

11. What is the electronic configuration of Boron?

A) 1s²2s²2p¹ B) 1s²2s¹2p² C) 1s²2s²2p² D) 1s²2s²2p³

12. Which of the following is a characteristic property of Boron?

A) Forms acidic oxides B) Forms basic oxides C) Forms amphoteric oxides D) Forms neutral oxides

13. The allotrope of sulfur that is stable at room temperature is:

A) Rhombic sulfur B) Monoclinic sulfur C) Plastic sulfur D) Milk of sulfur

14. Which halogen exhibits the highest melting and boiling point?

A) Fluorine B) Chlorine C) Bromine D) Iodine

15. The tendency to exhibit +3 oxidation state in Group 13 increases in the order:

A) B < Al < Ga < In < Tl B) Tl < In < Ga < Al < B C) B < Ga < Al < In < Tl D) B < Al < In < Ga < Tl

16. Which element in Group 14 exhibits allotropy?

A) Carbon B) Silicon C) Germanium D) Tin

17. Nitrogen molecule (N₂) is:

A) Paramagnetic B) Diamagnetic C) Ferromagnetic D) Antiferromagnetic

18. Which is the most stable allotrope of phosphorus?

A) White phosphorus B) Red phosphorus C) Black phosphorus D) Violet phosphorus

19. Which of the following is a strong oxidizing agent?

A) Fluorine B) Chlorine C) Bromine D) Iodine

20. The bond angle in water (H₂O) is approximately:

A) 104.5° B) 109.5° C) 120° D) 90°

21. The most common oxidation state of Aluminum is:

A) +1 B) +2 C) +3 D) 0

22. Which element in Group 14 forms a very stable oxide, SiO₂?

A) Carbon B) Silicon C) Germanium D) Tin

23. The anomalous behavior of which element is responsible for the unique properties of Group 15?

A) Nitrogen B) Phosphorus C) Arsenic D) Antimony

24. Which element in Group 16 has the lowest ionization enthalpy?

A) Oxygen B) Sulfur C) Selenium D) Tellurium

25. Which halogen is used as a disinfectant?

A) Fluorine B) Chlorine C) Bromine D) Iodine

26. The tendency to form pπ-pπ multiple bonds is highest in which element of Group 13?

A) Boron B) Aluminum C) Gallium D) Indium

27. Which element in Group 14 exhibits the highest ionization energy?

A) Carbon B) Silicon C) Germanium D) Tin

28. The bond length of N-N triple bond in N₂ is approximately:

A) 110 pm B) 120 pm C) 130 pm D) 140 pm

29. Which allotrope of phosphorus is the least stable and highly reactive?

A) White phosphorus B) Red phosphorus C) Black phosphorus D) Violet phosphorus

30. Which of the following is a non-metal that can form a strong acid?

A) Sulfur B) Selenium C) Tellurium D) Oxygen

31. Which element in Group 17 is a solid at room temperature?

A) Chlorine B) Bromine C) Iodine D) Astatine

32. The acidic nature of hydrides of Group 13 elements (EH₃) generally:

A) Increases down the group B) Decreases down the group C) Remains constant D) First increases then decreases

33. Which element in Group 14 is a semiconductor?

A) Carbon B) Silicon C) Tin D) Lead

34. The common oxidation state of phosphorus is:

A) -3, +3, +5 B) -2, +2, +4 C) -1, +1, +3 D) 0, +1, +2

35. Which allotrope of oxygen is essential for respiration?

A) O₂ B) O₃ C) O₄ D) O₅

36. The reactivity of halogens decreases in the order:

A) F₂ > Cl₂ > Br₂ > I₂ B) I₂ > Br₂ > Cl₂ > F₂ C) Cl₂ > F₂ > Br₂ > I₂ D) Br₂ > Cl₂ > I₂ > F₂

37. Boron forms covalent compounds due to its:

A) Low ionization enthalpy B) High electronegativity C) Small atomic size and high ionization enthalpy D) Large atomic size

38. Which of the following is a strong reducing agent?

A) H₂O B) H₂S C) H₂Se D) H₂Te

39. The stability of +1 oxidation state in Group 14 increases in the order:

A) C < Si < Ge < Sn < Pb B) Pb < Sn < Ge < Si < C C) C < Ge < Si < Sn < Pb D) C < Si < Sn < Ge < Pb

40. Ammonia (NH₃) is a:

A) Lewis acid B) Brønsted-Lowry acid C) Lewis base D) Brønsted-Lowry base

41. Which element in Group 16 is a metalloid?

A) Oxygen B) Sulfur C) Selenium D) Tellurium

42. Which of the following is the most stable interhalogen compound?

A) ClF₃ B) BrF₃ C) IF₅ D) ICl

43. The atomic radii of Group 13 elements generally:

A) Increases down the group B) Decreases down the group C) Remains the same D) First decreases then increases

44. Which allotrope of carbon is used as a lubricant?

A) Diamond B) Graphite C) Fullerene D) Graphene

45. The highest oxidation state of nitrogen is:

A) +3 B) +4 C) +5 D) +2

46. Ozone (O₃) is an allotrope of oxygen and acts as a:

A) Reducing agent B) Oxidizing agent C) Both oxidizing and reducing agent D) Neither oxidizing nor reducing agent

47. Which halogen has the lowest electronegativity?

A) Fluorine B) Chlorine C) Bromine D) Iodine

48. The reason for the diagonal relationship between Boron and Silicon is:

A) Similar atomic size and charge density B) Similar electronegativity C) Similar ionization enthalpy D) Similar number of valence electrons

49. Which compound of Aluminum is used in antiperspirants?

A) AlCl₃ B) Al₂(SO₄)₃ C) Al(OH)₃ D) Potash alum

50. The ionization enthalpy of Group 16 elements generally:

A) Increases down the group B) Decreases down the group C) Remains the same D) First decreases then increases

Properties and trends of p-block elements group 13 to 18 - Online Test

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