This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part Ii > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Relationship between bond length and bond energy is A) No relation. B) Direct proportion. C) Depends on the compound. D) Indirect proportion. Show Answer Correct Answer: D) Indirect proportion. 2. Covalency of oxygen cannot exceed 2 unlike sulphuur which can show +4 or +6 because A) O atom does not have d-orbitals. B) O atom has two unpaired electrons in its valence shell. C) O can form a double bond with another O atom. D) Electrons of O atom cannot be promoted to d-orbitals due to small size. Show Answer Correct Answer: A) O atom does not have d-orbitals. 3. Which of the following is the strongest oxidizing agent A) Bromine. B) Fluorine. C) Iodine. D) Chlorine. Show Answer Correct Answer: B) Fluorine. 4. D-block elements loses first elecrton(s) from ..... subshell. A) 3d. B) 3s. C) 3p. D) 4s. Show Answer Correct Answer: D) 4s. 5. When chlorine reacts with cold and dilute solution of sodium hydroxide, it forms A) Cl-and ClO2-. B) Cl-and ClO-. C) Cl-and ClO3-. D) Cl-and ClO4-. Show Answer Correct Answer: B) Cl-and ClO-. 6. What is the name of the following ion?O$_{2}$ $^{2-}$ A) Oxygen ion. B) Peroxide ion. C) Oxide ion. D) Oxyate ion. Show Answer Correct Answer: B) Peroxide ion. 7. What is the hybridization of B & N in Borazine A) Sp. B) Sp2. C) Dsp2. D) Sp3. Show Answer Correct Answer: B) Sp2. 8. 5H$_{2}$N$_{2}$O$_{2}$ + 8KMnO$_{4}$ + 12H$_{2}$SO$_{4}$ A) 8MnSO$_{4}$ + 10HNO$_{3}$ + 2K$_{2}$SO$_{4}$ + 12H$_{2}$O. B) 8MnSO$_{4}$ + 5HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 12H$_{2}$O. C) 8MnSO$_{4}$ + 10HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 12H$_{2}$O. D) 8MnSO$_{4}$ + 10HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 10H$_{2}$O. Show Answer Correct Answer: C) 8MnSO$_{4}$ + 10HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 12H$_{2}$O. 9. NaOH + cl2 $\rightarrow$ NaCl + ..... + H2Ohot and conc A) NaOCl. B) NaoCl2. C) NaClo3. D) Naclo4. Show Answer Correct Answer: C) NaClo3. 10. Nitric acid is a A) Strong oxidising agent. B) Strong reducing agent. C) Strong hydrating agent. D) None of the above. Show Answer Correct Answer: A) Strong oxidising agent. 11. Assertion:Nitrogen is restricted to maximum covalence of 4.Reason:Nitrogen exists as a diatomic molecule (N2) with a triple bond. A) Assertion & Reason are true but Reason is not the correct explanation of the assertion. B) Assertion is Correct but Reason is incorrect. C) Assertion is incorrect but Reason is correct. D) Assertion & Reason are true & Reason is thecorrect explanation of the Assertion. Show Answer Correct Answer: A) Assertion & Reason are true but Reason is not the correct explanation of the assertion. 12. How does the size of anions compare to their corresponding neutral atoms in p-block? A) Anions are larger than their corresponding neutral atoms in the p-block. B) Anions are only slightly larger than their corresponding neutral atoms in the p-block. C) Anions are smaller than their corresponding neutral atoms in the p-block. D) Anions have the same size as their corresponding neutral atoms in the p-block. Show Answer Correct Answer: A) Anions are larger than their corresponding neutral atoms in the p-block. 13. What are typical oxidation state for Sc? A) -1. B) +1. C) -3. D) +3. Show Answer Correct Answer: D) +3. 14. A black powder when heated with conc.HCl gives a greenish yellow gas. The gas acts as an oxidizing and a bleaching agent. When it is passed over slaked lime, a white powder is formed which is a ready source of the greenish yellow gas. The black powder and white powder respectively are A) MnO$_{2}$ & KClO$_{3}$. B) MnO$_{2}$ & Ca(OCl)$_{2}$. C) MnCl$_{2}$ & COCl$_{2}$. D) KClO$_{3}$ & NaClO$_{3}$. Show Answer Correct Answer: B) MnO$_{2}$ & Ca(OCl)$_{2}$. 15. What is the shape of IF3 A) Bent T shape. B) Pyramidal. C) Square planar. D) Trigonal Bipyramidal. Show Answer Correct Answer: A) Bent T shape. 16. Which of the following noble gases is most prevalent in the atmosphere? A) Helium. B) Argon. C) Radon. D) Xenon. Show Answer Correct Answer: B) Argon. 17. Oxidation state of Nitrogen in dinitrogen trioxide A) +6. B) +3. C) +4. D) +2. Show Answer Correct Answer: B) +3. 18. Which alkali metal has the lowest melting point? A) Lithium. B) Sodium. C) Francium. D) Potassium. Show Answer Correct Answer: C) Francium. 19. In group 15 elements as we move down the road atomic radii A) Increases. B) Decreases. C) Remain same. D) None of the above. Show Answer Correct Answer: A) Increases. 20. K$_{2}$Cr$_{2}$O$_{7}$ + H$_{2}$SO$_{4}$ + 3H$_{2}$SO$_{3}$ A) K$_{2}$SO$_{4}$ + 2CrSO$_{4}$ + 4H$_{2}$O. B) K$_{2}$SO$_{4}$ + Cr$_{2}$(SO$_{4}$)$_{3}$ + 4H$_{2}$O. C) K$_{2}$SO$_{4}$ + 3CrSO$_{4}$ + 4H$_{2}$O. D) K$_{2}$SO$_{4}$ + 2Cr$_{2}$(SO$_{4}$)$_{3}$ + 4H$_{2}$O. Show Answer Correct Answer: B) K$_{2}$SO$_{4}$ + Cr$_{2}$(SO$_{4}$)$_{3}$ + 4H$_{2}$O. 21. Which alkali metal is known for having the maximum degree of hydration? A) Sodium. B) Rubidium. C) Potassium. D) Lithium. Show Answer Correct Answer: D) Lithium. 22. Pure H2SO4 is viscous due to presence of A) Inter molecular H-bondind. B) Intra molecular H-bondind. C) VanderWaal's force. D) None. Show Answer Correct Answer: A) Inter molecular H-bondind. 23. Among the 15th group elements, as we move from nitrogento bismuth, the pentavalency becomes less pronouncedand trivalency becomes more pronounced due to A) Non metallic character. B) Inert pair effect. C) High electronegativity. D) Large ionization energy. Show Answer Correct Answer: B) Inert pair effect. 24. Complete the following reactions by filling the appropriate choice.A) 6XeF$_{4}$+12H$_{2}$O$\rightarrow$4Xe+2XeO$_{3}$+(i)+(ii).B) XeF$_{6}$+3H$_{2}$O$\rightarrow$(iii) +6HF A) 24HF 3O$_{2}$ XeO$_{3}$. B) F$_{2}$ H$_{2}$O XeO$_{4}$. C) 2HF 2H$_{2}$O XeO. D) HF H$_{2}$O Xe$_{2}$O$_{3}$. Show Answer Correct Answer: A) 24HF 3O$_{2}$ XeO$_{3}$. 25. Sodium burns with oxygen to form A) Normal oxide. B) Peroxide. C) Superoxide. D) None. Show Answer Correct Answer: B) Peroxide. 26. SF6 is a kinetically inert substance because A) Fluorine is more electronegative. B) It is sterically protected. C) Greater difference in electronegativities of S & F. D) Larger size of S atom. Show Answer Correct Answer: B) It is sterically protected. 27. Argon (proton number =18) is inert to any chemical reaction because A) It is light. B) It has achieved stable octet electron arrangement. C) It is located in Group 18. D) It has achieved stable duplet electron arrangement. Show Answer Correct Answer: B) It has achieved stable octet electron arrangement. 28. Which of the following two are isostructural? A) NH3, BF3. B) SO$_{3}$$^{2-}$. C) XeF2, IF$_{2}$$^{-}$. D) CO$_{3}$$^{2-}$. Show Answer Correct Answer: C) XeF2, IF$_{2}$$^{-}$. 29. PCl$_{5}$ is well known but NCl$_{5}$ is not.because, A) Size of phosphorus is larger than Nitrogen. B) Nitrogen doesn't have d-orbital in its valance shell. C) Nitrogen is less reactive than phosphorus. D) Catenation tendency is weaker in Nitrogen than phosphorus. Show Answer Correct Answer: B) Nitrogen doesn't have d-orbital in its valance shell. 30. In groups 15 to 18, the poor shielding effect of d & f electrons are overcome by the increased shielding effect of the additional ..... electrons. A) D. B) P. C) F. D) S. Show Answer Correct Answer: B) P. 31. Which of the halides of nitrogen is stable A) NI$_{3}$. B) NF$_{3}$. C) NCl$_{3}$. D) NBr$_{3}$. Show Answer Correct Answer: B) NF$_{3}$. 32. Which of the following statements is not correct for SO$_{2}$ gas? A) It act as a bleaching agent in moist conditions. B) Acidified KMnO$_{4}$ is decolourised when SO$_{2}$ is passed through it. C) Its molecules have linear geometry. D) Its dil. Solution is used as disinfectant. Show Answer Correct Answer: C) Its molecules have linear geometry. 33. Which one of the following can reduce concern sulfuric acid down to hydrogen sulfide? A) Chloride ions. B) Fluoride ions. C) Iodide ions. D) Bromide ions. Show Answer Correct Answer: C) Iodide ions. 34. What is the name of the following ion?ClO$_{4}$ $^{-}$ A) Chlorite ion. B) Chloride ion. C) Chlorate ion. D) Perchlorate ion. Show Answer Correct Answer: D) Perchlorate ion. 35. What are the decay products of radium? A) Radon and oxygen. B) Radon and nitrogen. C) Lanthanum and oxygen. D) Radon and Helium. Show Answer Correct Answer: D) Radon and Helium. 36. How does the stability of oxidation states vary among p block elements? A) All p block elements have the same oxidation state regardless of their position in the group. B) Heavier p block elements have fewer oxidation states than lighter ones. C) The stability of oxidation states decreases down the group in p block elements, with heavier elements showing more variability. D) The stability of oxidation states increases down the group in p block elements. Show Answer Correct Answer: C) The stability of oxidation states decreases down the group in p block elements, with heavier elements showing more variability. 37. Describe the reactivity trend of alkaline earth metals. A) Reactivity decreases down the group. B) Reactivity increases down the group. C) Reactivity is highest at the top of the group. D) Reactivity remains constant down the group. Show Answer Correct Answer: B) Reactivity increases down the group. 38. The bleaching action of SO2 is A) Pertmanent. B) Temprory. C) Can not say. D) None of the above. Show Answer Correct Answer: B) Temprory. 39. Bond dissociation enthalpy of E-H (E = element)bond is given below. Which of the compounds willact as strongest reducing agent?Compound NH3 PH3 AsH3 SbH31$\Delta$diss (E-H)/kJ mol.-389 322 297 255 A) SbH3. B) AsH3. C) PH3. D) NH3. Show Answer Correct Answer: A) SbH3. 40. Based on what you have learnt, predict the properties of Astatine. Given that Astatine is an element in Group 17 of the Periodic Table. A) Dark brown colour gas with a rapid reaction with H$_{2}$O to give 2 acids. B) Black colour solid with a very slow reaction with H$_{2}$O to give 2 acids. C) Dark brown colour solid with a no reaction with H$_{2}$O. D) Black colour solid with a no reaction with H$_{2}$O. Show Answer Correct Answer: B) Black colour solid with a very slow reaction with H$_{2}$O to give 2 acids. 41. PH value is less for A) NH3. B) SbH3. C) BiH3. D) AsH3. Show Answer Correct Answer: C) BiH3. 42. What is the electronic configuration of gallium A) [Ar] 3d104s24p1. B) [Ar] 3d104s14p2. C) [Ar] 3d94s04p3. D) [Ar] 3d94s24p1. Show Answer Correct Answer: A) [Ar] 3d104s24p1. 43. Which groups of the periodic table are considered s-block elements? A) Groups 3 and 4. B) Groups 1 and 2. C) Groups 5 and 6. D) Groups 7 and 8. Show Answer Correct Answer: B) Groups 1 and 2. 44. An excess of aqueous solution of silver nitrate is added to an aqueous solution containing both potassium chloride and potassium bromide. the precipitate formed is the filtered off and washed with distilled water. The precipitate is then shaken with aqueous ammonia and filtered off again.which ion does the final filtrate contain? A) Iodide. B) Chloride. C) Potassium. D) Silver. Show Answer Correct Answer: B) Chloride. 45. What type of oxides are generally formed by nonmetals of the p-block? A) Basic. B) Neutral. C) Amphoteric. D) Acidic. Show Answer Correct Answer: D) Acidic. 46. Ammonia is a lewis base. It forms complexes with cations. Which one of the following cations does not form complex with ammonia? A) Cd$^{2+}$. B) Pb$^{2+}$. C) Cu$^{2+}$. D) Ag$^{+}$. Show Answer Correct Answer: B) Pb$^{2+}$. 47. Which of the following elements in group 15 has the highest atomic size? A) Phosphorus. B) Arsenic. C) Antimony. D) Nitrogen. Show Answer Correct Answer: C) Antimony. 48. Shaan is curious about the atomic number of the heaviest element of the p-block element. Can you help him find it? A) 82. B) 80. C) 84. D) 86. Show Answer Correct Answer: D) 86. 49. Ognasesson has been synthetically produced by collision of A) Ra & He. B) Cf & Cu. C) Cl & Ca. D) Ra & Ca. Show Answer Correct Answer: C) Cl & Ca. 50. In group 17 elements ..... is the most reactive element A) Cl. B) Br. C) F. D) I. Show Answer Correct Answer: C) F. 51. Which statement about the redox behavior of p-block elements is incorrect? A) Oxygen acts as a strong oxidizing agent, readily accepting electrons in reactions. B) The oxidizing ability of halogens decreases from fluorine to iodine. C) Arsenic shows a stronger reducing ability than oxygen, typical of its group behavior. D) None of the above. Show Answer Correct Answer: C) Arsenic shows a stronger reducing ability than oxygen, typical of its group behavior. 52. Assertion; S shows paramagnetic in nature, when present in vapour state, Reason; S exists as S$_{2}$ in vapour state A) Both assertion and reason correct but reason is not correct explanation of assertion. B) Both assertion and reason correct, reason is correct explanation of assertion. C) Both assertion and reason are not correct. D) Assertion is correct but reason is wrong. Show Answer Correct Answer: B) Both assertion and reason correct, reason is correct explanation of assertion. 53. Which is suitable condition for "Indsutrially ammonia gas is manufactured by Haber's Process" . A) 230 bar pressure, 770 K, [Fe3O4]. B) 210 bar pressure, 773 K, [FeO]. C) 230 bar pressure, 770 K, [Fe2O3]. D) 200 bar pressure, 773 K, [FeO]. Show Answer Correct Answer: D) 200 bar pressure, 773 K, [FeO]. 54. Atomic size of an atom depends on A) Principal quantum number. B) Shielding effect. C) Effective nuclear charge. D) All of the above. Show Answer Correct Answer: D) All of the above. 55. Which is the correct thermal stability order for H$_{2}$E (E = O, S, Se, Te and Po)? A) H$_{2}$S < H$_{2}$O < H$_{2}$Se < H$_{2}$Te < H$_{2}$Po. B) H$_{2}$Po < H$_{2}$Te < H$_{2}$Se < H$_{2}$S < H$_{2}$O. C) H$_{2}$Se < H$_{2}$Te < H$_{2}$Po < H$_{2}$O < H$_{2}$S. D) H$_{2}$O < H$_{2}$S < H$_{2}$Se < H$_{2}$Te < H$_{2}$Po. Show Answer Correct Answer: B) H$_{2}$Po < H$_{2}$Te < H$_{2}$Se < H$_{2}$S < H$_{2}$O. 56. Among the tri halides of Nitrogen, which one is the least basic? A) NF3. B) Nl3. C) NBr3. D) NCl3. Show Answer Correct Answer: A) NF3. 57. SO$_{3}$ reacts with water to form ..... A) H$_{3}$SO$_{3}$. B) HSO$_{4}$. C) H$_{2}$SO$_{4}$. D) HSO$_{3}$. Show Answer Correct Answer: C) H$_{2}$SO$_{4}$. 58. How does the reactivity of group 13 elements change down the group? A) Reactivity is highest at the top of the group. B) Reactivity increases down the group. C) Reactivity decreases down the group. D) Reactivity remains constant down the group. Show Answer Correct Answer: B) Reactivity increases down the group. 59. In a chemistry class, Aanya is curious about the halogen family and asks her teacher which element has less electronegativity. A) Polonium. B) Astatine. C) Germanium. D) Krypton. Show Answer Correct Answer: B) Astatine. 60. Which of the following is the least basic in nature- A) Lu(OH)$_{3}$. B) Ce(OH)$_{3}$. C) La(OH)$_{3}$. D) Yb(OH)$_{3}$. Show Answer Correct Answer: A) Lu(OH)$_{3}$. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 1Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 2Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 3Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 4Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 5Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 7Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 8Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books