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 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 12 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statements is not correct about the structure of PCl$_{5}$? A) PCl$_{5}$ has a square pyramidal structure. B) Three equatorial P-Cl bonds are equivalent. C) The two axial bonds are different and longer than equatorial bonds. D) In solid state it exists as [PCl$_{4}$]$^{+}$[PCl$_{6}$]$^{-}$. Show Answer Correct Answer: A) PCl$_{5}$ has a square pyramidal structure. 2. Assertion:F-F bond in F$_{2}$ molecule is weak.Reason:F atom is small in size.(a) Assertion is correct, reason is correct; reason is a correct explanation for assertion. (b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion (c) Assertion is correct, reason is incorrect (d) Assertion is incorrect, reason is correct A) D. B) A. C) B. D) C. Show Answer Correct Answer: B) A. 3. Copper carbonate + hydrochloric acid $\rightarrow$ A) Copper chloride + water + carbondioxide. B) Copper chloride + hydrogen. C) Copper chloride + water. D) Copper chloride + water + hydrogen. Show Answer Correct Answer: A) Copper chloride + water + carbondioxide. 4. Conc.H2SO4 may act as A) Dehydrating agent. B) An oxidising agent. C) A drying agent for some gases. D) All of these. Show Answer Correct Answer: D) All of these. 5. Which of the following is the wrong statement? A) The two oxygen-oxygen bond length in ozone are identical. B) O$_{3}$ molecule is bent shape. C) Ozone is violet-black in solid state. D) Ozone is a paramagnetic gas. Show Answer Correct Answer: D) Ozone is a paramagnetic gas. 6. Element R forms an ion, R$^{-}$ with an electron arrangement of 2.8.8. The chemical properties of element R are similar to another element with a proton number of? A) 16. B) 19. C) 9. D) 12. Show Answer Correct Answer: C) 9. 7. The oxidation states of sulphur in Caro's acid and Marshall's acid are respectively A) +5 and +6. B) +4 and +6. C) +6 and +6. D) +5 and +5. Show Answer Correct Answer: C) +6 and +6. 8. The strongest acid A) HCl. B) HI. C) HBr. D) HF. Show Answer Correct Answer: B) HI. 9. Which of the following gas is used for providing inert atmosphere for filling electric bulbs? A) Helium. B) Argon. C) Xenon. D) Neon. Show Answer Correct Answer: B) Argon. 10. What are the elements in group 18 (the far right) of the periodic table called? A) Halogens. B) Alkali metals. C) Alkaline earth metals. D) Noble gases. Show Answer Correct Answer: D) Noble gases. 11. Which statement regarding the reducing properties of p-block elements is incorrect? A) Tin (Sn) and lead (Pb) can act as reducing agents, particularly in their lower oxidation states. B) Fluorine, due to its high electronegativity, is a good reducing agent within the p-block. C) The reducing ability generally increases as one moves down a group in the p-block. D) None of the above. Show Answer Correct Answer: B) Fluorine, due to its high electronegativity, is a good reducing agent within the p-block. 12. Sulphur in the vapour state is diamagnetic. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. What is the maximum covalency of arsenic? A) 6. B) 8. C) 4. D) 2. Show Answer Correct Answer: A) 6. 14. What is the trend in atomic radius across a period? A) The atomic radius fluctuates across a period. B) The atomic radius remains constant across a period. C) The atomic radius decreases across a period. D) The atomic radius increases across a period. Show Answer Correct Answer: C) The atomic radius decreases across a period. 15. Ammonia is liquid phosphene gas . Why? A) Due to more molar mass ammonia has maximum vanderwall force of attraction. B) Due to more molar mass, ammonia has less vander wall force of attraction. C) Due to presence of inter molecular hydrogen bonding in ammonia. D) Due to absence of hydrogen bonding in ammonia. Show Answer Correct Answer: C) Due to presence of inter molecular hydrogen bonding in ammonia. 16. Which Group 15 element is known for its toxic properties? A) Nitrogen. B) Arsenic. C) Bismuth. D) Phosphorus. Show Answer Correct Answer: D) Phosphorus. 17. What are the main characteristics of p-block elements? A) P-block elements are characterized by their uniform properties and are all nonmetals. B) P-block elements are characterized by their diverse oxidation states, ability to form covalent bonds, presence of p orbitals, and a mix of metals, metalloids, and nonmetals. C) They exclusively form ionic bonds and lack p orbitals. D) P-block elements are only metals with fixed oxidation states. Show Answer Correct Answer: B) P-block elements are characterized by their diverse oxidation states, ability to form covalent bonds, presence of p orbitals, and a mix of metals, metalloids, and nonmetals. 18. Which of the following is a non-metal a. Bi b. Sb c. N d. All of these A) Bi. B) Sb. C) N. D) All of these. Show Answer Correct Answer: C) N. 19. The oxidation number of I in HIO $_{4}$ A) +4. B) + 7. C) +3. D) + 5. Show Answer Correct Answer: B) + 7. 20. Which of the following contains nitrogen in-1 oxidation state? A) NO. B) N2H4. C) N2O3. D) NH2OH. Show Answer Correct Answer: D) NH2OH. 21. Select the correct option regarding the properties of dioxygen A) Dioxygen never reacts with metals. B) Dioxygen is diamagnetic in nature. C) Combination of dioxygen with other elements is highly exothermic process. D) Dioxygen liquifies at 55K and freezes at 90K. Show Answer Correct Answer: C) Combination of dioxygen with other elements is highly exothermic process. 22. What is the atomic number of antimony? A) 85. B) 33. C) 114. D) 84. Show Answer Correct Answer: A) 85. 23. Phosphorus reacts to excess supply of chlorine to form ..... A) PCl$_{5}$. B) PCl$_{4}$. C) PCl$_{3}$. D) PCl. Show Answer Correct Answer: A) PCl$_{5}$. 24. Sulphuric acid is diprotic acid, hence it forms A) Acidic salts. B) Acidic& basic salts. C) Acidic & normal salts. D) Double salts. Show Answer Correct Answer: C) Acidic & normal salts. 25. In which of the following oxides, one nitrogen atom is not directly linked to oxygen? A) N$_{2}$O. B) N$_{2}$O$_{4}$. C) N$_{2}$O3. D) NO. Show Answer Correct Answer: A) N$_{2}$O. 26. Number of lone pairs of electrons on Xe atoms XeF$_{2}$, XeF$_{4}$ and XeF$_{6}$ molecules are respectively A) 3, 2 and 1. B) 4, 3 and 2. C) 2, 3 and 1. D) 3, 2 and 0. Show Answer Correct Answer: A) 3, 2 and 1. 27. The element which exists in a liquid state for a wide range of temperature and can be used for measuring high temperature is A) Ga. B) Al. C) B. D) In. Show Answer Correct Answer: A) Ga. 28. Which of the following elements does not show allotropy? A) Antimony. B) Nitrogen. C) Arsenic. D) Bismuth. Show Answer Correct Answer: B) Nitrogen. 29. On heating KClCO$_{3}$, we get A) KClO$_{2}$+O$_{2}$. B) KCl+O$_{2}$. C) KCl+O$_{2}$+O$_{3}$. D) KCl+O$_{3}$. Show Answer Correct Answer: B) KCl+O$_{2}$. 30. What is the shape of ClF3 A) Tetrahedral. B) Trigonal Planar. C) Square Pyramidal. D) Pentagonal Bipyramidal. Show Answer Correct Answer: C) Square Pyramidal. 31. The element does not belongs to 15th group A) In. B) Bi. C) P. D) As. Show Answer Correct Answer: A) In. 32. What is the atomic number of the last element in Group 15? A) 106. B) 74. C) 83. D) 92. Show Answer Correct Answer: C) 83. 33. Which of the following elements will not form stable diatomic molecule? A) P. B) I. C) N. D) O. Show Answer Correct Answer: A) P. 34. ..... are a group of very diverse elements with a wide range of properties. A) P-block elements. B) S-block elements. C) D-block elements. D) F-block elements. Show Answer Correct Answer: A) P-block elements. 35. N is relatively inactive element because A) Its atoms has a stable electronic configuration. B) It has low atomic radius. C) Dissociation energy of its molecule is fairly high. D) Its electronegativity is fairly high. Show Answer Correct Answer: C) Dissociation energy of its molecule is fairly high. 36. Which of the following is known as "inorganic benzene" ? A) Pyridine. B) Phosphazine. C) Borazine. D) Piperazine. Show Answer Correct Answer: C) Borazine. 37. Boron cannot form which one of the following anions? A) BO$_{2}$$^{-}$. B) BF$_{6}$$^{3-}$. C) B(OH)$_{4}$$^{-}$. D) BH$_{4}$$^{-}$. Show Answer Correct Answer: B) BF$_{6}$$^{3-}$. 38. Hot conc. $H_2SO_4$ $H_2SO_4$ A) S. B) Zn. C) Cu. D) C. Show Answer Correct Answer: D) C. 39. Which of the following is only acidic in nature? A) Al(OH)$_{3}$. B) B(OH)$_{3}$. C) Be(OH)$_{2}$. D) Mg(OH)$_{2}$. Show Answer Correct Answer: B) B(OH)$_{3}$. 40. All elements in the Halogen family react violently because A) Halogens have 1 valence electron that they give away readily to other elements in reactions. B) Halogens have 7 valence electrons which gives up massive energy when they give all seven to other elements. C) Halogens need only 1 electron which they will violently take from other elements. D) Halogens only react violently with water. Show Answer Correct Answer: C) Halogens need only 1 electron which they will violently take from other elements. 41. The following shows the information about element Y.-Achieved stable octet electron arrangement-Used in lasers for eye retina treatmentIdentify element Y. A) Helium. B) Uranium. C) Cobalt. D) Krypton. Show Answer Correct Answer: D) Krypton. 42. Among the following, which has greater boiling point? A) H2Se. B) H2S. C) H2O. D) H2Te. Show Answer Correct Answer: C) H2O. 43. Which of the following hydrides is most acidic? A) H2S. B) H2O. C) H2Te. D) H2Se. Show Answer Correct Answer: C) H2Te. 44. The hybridization of Xe in XeF$_{2 }$is A) Sp$^{2}$d. B) Sp$^{3}$. C) Sp$^{3}$d. D) Sp$^{2}$. Show Answer Correct Answer: C) Sp$^{3}$d. 45. What was the name of the combination of chlorine gas and carbon monoxide gas that was 18 times more powerful than Chlorine? A) Mustard. B) Chlorine 3. C) DiPhosgene. D) Phosgene. Show Answer Correct Answer: D) Phosgene. 46. In solid state PCl$_{5}$ is a ..... A) Covalent solid. B) Octahedral structure. C) Ionic solid with [PCl$_{6}$]$^{+}$ octahedral and [PCl$_{4}$]$^{-}$ tetrahedra. D) Ionic solid with [PCl$_{4}$]$^{+}$ tetrahedral and [PCl$_{6}$]$^{-}$ octahedra. Show Answer Correct Answer: D) Ionic solid with [PCl$_{4}$]$^{+}$ tetrahedral and [PCl$_{6}$]$^{-}$ octahedra. 47. Colour of Cl2 is A) Greenish yellow. B) Reddish brown. C) Violet. D) Blue. Show Answer Correct Answer: A) Greenish yellow. 48. What is the common oxidation state of alkali metals? A) 0. B) +2. C) +1. D) -1. Show Answer Correct Answer: C) +1. 49. Which of the following is a tetrabasic acid? A) Pyrophosphoric acid. B) Metaphosphoric acid. C) Orthophosphoric acid. D) Hyprophosphorous acid. Show Answer Correct Answer: A) Pyrophosphoric acid. 50. Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acid shows highest bond dissociation enthalpy A) HF. B) HCl. C) HBr. D) HI. Show Answer Correct Answer: A) HF. 51. Both Suphur and oxygen in SO2 undergo the following hybridization A) Sp. B) Sp2. C) Sp3d. D) Sp3. Show Answer Correct Answer: B) Sp2. 52. What is the primary characteristic of the hydration energy of alkali metal ions? A) Fluctuates randomly. B) Remains constant. C) Increases with ionic size. D) Decreases with ionic size. Show Answer Correct Answer: D) Decreases with ionic size. 53. XeF$_{4}$ on partial hydrolysis produces A) XeO$_{3}$. B) XeOF$_{2}$. C) XeF$_{4}$. D) XeOF$_{4}$. Show Answer Correct Answer: B) XeOF$_{2}$. 54. Which of the following is not a noble gas? A) Xenon, Xe. B) Helium, He. C) Nickel, Ni. D) Radon, Rn. Show Answer Correct Answer: C) Nickel, Ni. 55. The formation of O$_{2}$$^{+}$[PtF$_{6}$]$^{-}$is the basis for the formation of first xenon compound. This is because A) O2 and Xe have different sizes. B) Both O2 and Xe are gases. C) O2 and Xe have comparable electro-negativities. D) O2 and Xe have comparable ionisation enthalpies. Show Answer Correct Answer: D) O2 and Xe have comparable ionisation enthalpies. 56. Which of the following alkali metals forms a nitride when reacting with nitrogen? A) Sodium. B) Rubidium. C) Potassium. D) Lithium. Show Answer Correct Answer: D) Lithium. 57. What is used as a promoter in the manufacture of ammonia by Haber process? A) K2O, Al(OH)3. B) KO2, Al(OH)3. C) KO2, Al2O3. D) K2O, Al2O3. Show Answer Correct Answer: D) K2O, Al2O3. 58. Which of the following comparison is correct about helium, He and argon, Ar? A) One mole of helium is heavier than one mole of argon. B) Helium have stable octet electron arrangement while argon have stable duplet electron arrangement. C) Argon has more filled electron shells than helium. D) The melting point of helium is higher than argon. Show Answer Correct Answer: C) Argon has more filled electron shells than helium. 59. Correct statements among 'A' to 'D' regarding silicones are:(A) They are polymers with hydrophobic character.(B) They are biocompatible.(C) In general, they have high thermal stability and low dielectric strength.(D) Usually, they are resistant to oxidation and used as greases. A) A, B, C and D. B) A, B and C only. C) A and B only. D) A, B and D only. Show Answer Correct Answer: D) A, B and D only. 60. The geometry and hybridization of Xe in XeF$_{6 }$are respectively A) Distorted octahedral, sp$^{3}$d$^{3}$. B) Octahedral, sp$^{3}$d$^{2}$. C) Square planar, sp$^{3}$d$^{2}$. D) Pyramidal, sp$^{3}$. Show Answer Correct Answer: A) Distorted octahedral, sp$^{3}$d$^{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 6Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 7Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books