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 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a non-typical p-block element? A) Oxygen. B) Helium. C) Sulphur. D) Phosphorous. Show Answer Correct Answer: B) Helium. 2. Assertion:Dinitrogen is inert at room temperature. Reason:Dinitrogen directly combines with lithium to form ionic nitrides.(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) C. B) D. C) B. D) A. Show Answer Correct Answer: A) C. 3. Which of the following elements occur in native state? A) P. B) Si. C) S. D) I. Show Answer Correct Answer: C) S. 4. Which of the following metals has the largest abundance in the earth's crust? A) Na. B) Al. C) Ca. D) Mg. Show Answer Correct Answer: B) Al. 5. What is Silicon's Atomic Number? A) 188. B) 14. C) 16. D) 21. Show Answer Correct Answer: B) 14. 6. Which of the following statements is not true for halogens? A) All form monobasic oxyacids. B) All are oxidizing agents. C) All but fluorine show positive oxidation states. D) Chlorine has the highest electron-gain enthalpy. Show Answer Correct Answer: C) All but fluorine show positive oxidation states. 7. Which of the following elements has the highest metallic content A) Aluminium. B) Nitrogen. C) Hydrogen. D) Bismuth. Show Answer Correct Answer: D) Bismuth. 8. The correct order of increasing electron affinity of halogens is A) Br B) Cl C) I D) I Show Answer Correct Answer: C) I 9. Which property makes aluminum useful in aircraft manufacturing? A) High density. B) High reactivity. C) Low density and high strength. D) Good conductivity. Show Answer Correct Answer: C) Low density and high strength. 10. Phophonitrilic compounds are also known as A) Phosphonitriles. B) Phosphozenes. C) Both. D) None. Show Answer Correct Answer: C) Both. 11. Element X dissolves in water to produce a solution that turns the blue litmus paper red and then decolourised. What is element X? A) Neon. B) Sodium. C) Bromine. D) Sulphur. Show Answer Correct Answer: C) Bromine. 12. Holme's signal uses chemical compound A) Calcium carbide. B) Calcium phosphide. C) Calcium carbide and aluminium phosphide. D) Calcium carbide and aluminium carbide. Show Answer Correct Answer: C) Calcium carbide and aluminium phosphide. 13. The element of group 17 whose half life is in milliseconds only is A) At. B) Ts. C) Te. D) Og. Show Answer Correct Answer: B) Ts. 14. Whic of the following is pseudohalogen A) CN-. B) (CN)2. C) N3-. D) All. Show Answer Correct Answer: D) All. 15. The correct statement(s) about O$_{3}$ is(are) (i) O-O bond lengths are equal (ii) Thermal decomposition of O$_{3}$ is endothermic (iii) O$_{3}$ is diamagnetic in nature (iv) O$_{3}$ has a bent structure A) (i) and (iii). B) (ii) and (iii). C) (i), (iii) and (iv). D) (i) and (iv). Show Answer Correct Answer: C) (i), (iii) and (iv). 16. What is the trend in ionization energy for p block elements? A) Ionization energy decreases across a period and increases down a group for p block elements. B) Ionization energy increases across a period and decreases down a group for p block elements. C) Ionization energy remains constant across a period and down a group for p block elements. D) Ionization energy increases down a group and decreases across a period for p block elements. Show Answer Correct Answer: B) Ionization energy increases across a period and decreases down a group for p block elements. 17. Each of the following is true for white and red phosphorus except that they A) Consist of the same kind of atoms. B) Are both soluble in CS$_{2}$. C) Can be oxidized by heating in air. D) Can be converted into one another. Show Answer Correct Answer: B) Are both soluble in CS$_{2}$. 18. How do the ionization energies of s-block elements compare to p-block elements? A) S-block elements have similar ionization energies to p-block elements. B) S-block elements have higher ionization energies than p-block elements. C) S-block elements have lower ionization energies than p-block elements. D) S-block elements have significantly higher ionization energies than d-block elements. Show Answer Correct Answer: C) S-block elements have lower ionization energies than p-block elements. 19. What is the trend in oxidation states for group 14 elements? A) The trend in oxidation states for group 14 elements is +4 for lighter elements and +2 for heavier elements. B) The oxidation states do not change across the group. C) All group 14 elements have an oxidation state of +3. D) The trend is +2 for lighter elements and +4 for heavier elements. Show Answer Correct Answer: A) The trend in oxidation states for group 14 elements is +4 for lighter elements and +2 for heavier elements. 20. The correct order of acidity of oxoacids of halogens is A) HClO$_{4}$ B) HClO C) HClO< HClO$_{4}$< HClO$_{3}$< HClO$_{2}$. D) HClO$_{4}$< HClO$_{3}$< HClO$_{2}$< HClO. Show Answer Correct Answer: B) HClO 21. When three parts of conc. HCl and one part of conc.HNO$_{3}$ is mixed, a compound X is formed. The correct option related to X is A) X is known as aqua-regia. B) X is used for dissolving gold. C) X used for decomposition of salts of water acids. D) Both (a) & (b). Show Answer Correct Answer: D) Both (a) & (b). 22. 2NH$_{3}$ + NaOCl A) N$_{2}$H$_{6}$ + NaCl + H$_{2}$O. B) N$_{2}$H$_{4}$ + NaCl + 2H$_{2}$O. C) N$_{2}$H$_{6}$ + NaCl + 2H$_{2}$O. D) N$_{2}$H$_{4}$ + NaCl + H$_{2}$O. Show Answer Correct Answer: D) N$_{2}$H$_{4}$ + NaCl + H$_{2}$O. 23. In O$_{3}$ the O-O-O bond angle is about A) 117$^{0}$. B) 90$^{0}$. C) 109.5$^{0}$. D) 180$^{0}$. Show Answer Correct Answer: A) 117$^{0}$. 24. Which one of the following elements is most metallic? A) Sb. B) P. C) As. D) Bi. Show Answer Correct Answer: D) Bi. 25. Which of the following has maximum ionisation energy A) Silicon. B) Aluminium. C) Magnesium. D) Phosphorous. Show Answer Correct Answer: D) Phosphorous. 26. What is the highest oxidation state of nitrogen in its compounds? A) -4. B) +2. C) +5. D) 0. Show Answer Correct Answer: C) +5. 27. Compounds of Radon have not been isolated but only identified by a technique. The technique is called ..... A) Spectrometry technique. B) Radiotracer technique. C) Carbon dating technique. D) Magnetic imaging technique. Show Answer Correct Answer: B) Radiotracer technique. 28. Which of the following is NOT another name used for borax? A) Boric oxide. B) Tincal. C) Sodium tetraborate decahydrate. D) Suhaga. Show Answer Correct Answer: A) Boric oxide. 29. Borax is commonly used in: A) Glass and ceramics. B) Plastic manufacturing. C) Fuel cells. D) Pharmaceuticals. Show Answer Correct Answer: A) Glass and ceramics. 30. D-d transition is possible only in-: A) Cu$^{+1}$. B) Zn. C) Cu$^{+2}$. D) Zn$^{+2}$. Show Answer Correct Answer: C) Cu$^{+2}$. 31. Elements in the same group of periodic table have the same? A) Number of valence electrons. B) Physical properties. C) Electron configuration. D) Number of electrons. Show Answer Correct Answer: A) Number of valence electrons. 32. What is the name of the following ion?ClO $^{-}$ A) Chlorate ion. B) Hypochlorite ion. C) Perchlorate ion. D) Chlorite ion. Show Answer Correct Answer: B) Hypochlorite ion. 33. Noble gases do not undergo chemical changes even though high heat energy is supplied. Which of the following best describe this statement? A) Noble gases generally exist as solid in room conditions. B) Noble gases have achieved a stable octet electron arrangement. C) Noble gases have low boiling point. D) The attractive forces between atoms is very strong. Show Answer Correct Answer: B) Noble gases have achieved a stable octet electron arrangement. 34. Assertion:Fluorine exists only in-1 oxidation state.Reason:Fluorine has 2s$^{2}$2p$^{5}$ configuration with high electronegativity value.(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) A. B) D. C) C. D) B. Show Answer Correct Answer: A) A. 35. When you mix chlorine water and sodium bromide solution you will see A) No change. B) Fizzing. C) An orange brown colour. D) Blue colour. Show Answer Correct Answer: C) An orange brown colour. 36. An amorphous solid(X) burns in air to form a gas(Y) which turns lime water milky. This gas decolourises aqueous solution of acidified KMnO$_{4}$. Gas (Y) reacts with oxygen to give another gas (Z) which is responsible for acid rain. X, Y&Z. A) S SO$_{2}$ SO$_{3}$. B) S SO$_{3}$ H$_{2}$SO$_{4}$. C) P P$_{2}$O$_{3}$ P$_{2}$O$_{5}$. D) C CO CO$_{2}$. Show Answer Correct Answer: A) S SO$_{2}$ SO$_{3}$. 37. No. of 3c-2e$^{-}$ bonds and 2c-2e$^{-}$ bonds in diborane are respectively A) 2 and 4. B) 2 and 3. C) 4 and 2. D) 3 and 3. Show Answer Correct Answer: A) 2 and 4. 38. Which one of the following atoms has the highest value of atomization enthalpy? A) Ra. B) Be. C) Cs. D) Li. Show Answer Correct Answer: B) Be. 39. What are the common compounds formed by p-block elements? A) Common compounds include oxides, halides, and sulfides. B) Hydrides, phosphides, and selenides. C) Chlorides, acetates, and silicates. D) Nitrates, carbonates, and phosphates. Show Answer Correct Answer: A) Common compounds include oxides, halides, and sulfides. 40. Halogens have ..... electrons in their outermost shell A) Eight. B) Five. C) Seven. D) Six. Show Answer Correct Answer: C) Seven. 41. The range of oxidation state shown by phosphorous is of A) -3 to5. B) -3 to 0. C) 0 to 5. D) -4 to +2. Show Answer Correct Answer: A) -3 to5. 42. What is the trend in the formation of covalent bonds among p block elements? A) Covalent bond formation remains constant across a period and down a group. B) Covalent bond formation is highest at the top of a group and lowest at the bottom. C) Covalent bond formation increases across a period and decreases down a group. D) Covalent bond formation decreases across a period and increases down a group. Show Answer Correct Answer: C) Covalent bond formation increases across a period and decreases down a group. 43. Oxygen exhibits positive oxidation state is A) O$_{2}$ F$_{2}$. B) N$_{2}$O. C) CO$_{2}$. D) NO. Show Answer Correct Answer: A) O$_{2}$ F$_{2}$. 44. What is the formula for the carbonate ion? A) CO$_{2}$$^{-}$. B) CO$_{3}$$^{2-}$. C) CO$_{4}$$^{2-}$. D) CO$_{3}$$^{-}$. Show Answer Correct Answer: B) CO$_{3}$$^{2-}$. 45. States of group 7 elements are ..... A) Fluorine-liquid, chlorine-gas, Bromine liquid, iodine solid. B) Fluorine-gas, chlorine-gas, Bromine gas, iodine solid. C) Fluorine-gas, chlorine-gas, Bromine liquid, iodine gas. D) Fluorine-gas, chlorine-gas, Bromine liquid, iodine solid. Show Answer Correct Answer: D) Fluorine-gas, chlorine-gas, Bromine liquid, iodine solid. 46. Which one of the following oxyacids of Chlorine is the strongest? A) HOCl. B) HClO$_{2}$. C) HClO$_{3}$. D) HClO$_{4}$. Show Answer Correct Answer: D) HClO$_{4}$. 47. What are the products formed in the reaction of Xenon hexafluoride with silicon dioxide? A) XeF$_{2}$+ SiF$_{4}$. B) XeSiO$_{4}$+HF. C) XeO$_{3}$+ SiF$_{2}$. D) XeOF$_{4}$+SiF$_{4}$. Show Answer Correct Answer: D) XeOF$_{4}$+SiF$_{4}$. 48. Br2 + F2 (excess) $\rightarrow$ A) BrF3. B) BrF. C) BrF5. D) Br2F2. Show Answer Correct Answer: C) BrF5. 49. Which of the following statements is not correct about XeF$_{2}$? A) It can be obtained by direct reaction between F$_{2}$ & Xe at high pressure. B) XeF$_{2}$ undergoes alkaline hydrolysis to give O$_{2}$ and Xe. C) XeF$_{2}$ is a powerful reducing agent. D) XeF$_{2}$ contains two bond pairs and three lone pairs. Show Answer Correct Answer: C) XeF$_{2}$ is a powerful reducing agent. 50. Which statement about the nature of oxides formed by p-block elements is incorrect? A) Oxides of elements towards the left and lower part of the p-block are generally more basic. B) Oxides from elements at the top right of the p-block tend to be acidic. C) The majority of p-block elements form amphoteric oxides, reacting with both acids and bases. D) None of the above. Show Answer Correct Answer: C) The majority of p-block elements form amphoteric oxides, reacting with both acids and bases. 51. Which of the following is the increasing order of enthalpy of vaporization? A) NH3, ASH3, PH3. B) AsH3, PH3, NH3. C) PH3, AsH3, NH3. D) NH3, PH3, ASH3. Show Answer Correct Answer: C) PH3, AsH3, NH3. 52. Balance the ionic equation:Cl$_{2}$$^{ }$+ KBr $\rightarrow$ Br$_{2}$$^{ }$+ KCl A) Cl$_{2}$$^{ }$+ 2KBr $\rightarrow$ Br$_{2}$$^{ }$+ 2KCl. B) Cl$_{2}$$^{ }$+ 2KBr $\rightarrow$ Br$_{2}$$^{ }$+ KCl. C) Cl$_{2}$$^{ }$+ KBr $\rightarrow$ Br$_{2}$$^{ }$+ 2KCl. D) None of the above. Show Answer Correct Answer: A) Cl$_{2}$$^{ }$+ 2KBr $\rightarrow$ Br$_{2}$$^{ }$+ 2KCl. 53. What is the coordination number of Fluorine in HOF? A) -1. B) 0. C) +1. D) None of these. Show Answer Correct Answer: C) +1. 54. On addition of conc. H$_{2}$SO$_{4}$ to a chloride salt, colurless fumes are evolved but in case of iodide salt, violet fumes come out. This is because A) HI gets oxidized to I$_{2}$. B) HI is of violet colour. C) H$_{2}$SO$_{4}$ reduces HI to I$_{2}$. D) HI changes to HIO$_{3}$. Show Answer Correct Answer: A) HI gets oxidized to I$_{2}$. 55. Choose the correct geometry for XeF$_{6}$ A) Tetrahedral. B) Trigonal bipyramidal. C) Distorted octahedral. D) Square planar. Show Answer Correct Answer: C) Distorted octahedral. 56. Bond angle in PH$_{4}$$^{+ }$is higher than that in PH$_{3}$ A) Because PH$_{4}$$^{+}$ sp$^{3}$d and trigonal bi pyramidal. B) Because PH$_{4}$$^{+}$ sp$^{3}$ tetrahedral. C) Because PH$_{4}$$^{+}$ sp$^{2}$ trigonal planner. D) None of these. Show Answer Correct Answer: B) Because PH$_{4}$$^{+}$ sp$^{3}$ tetrahedral. 57. Nitrogen and phosphorus are A) Non metals. B) Metals. C) Metalloids. D) None of the above. Show Answer Correct Answer: A) Non metals. 58. Boric acid is also known as: A) Pyroboric acid. B) Metaboric acid. C) Boric oxide. D) Orthoboric acid. Show Answer Correct Answer: D) Orthoboric acid. 59. Which of the following is not true for perchlorate ion A) It is isostructural with permanganate ion. B) Trigonal pyramidal ion. C) Covalency of Cl is 7. D) Hybridization on Cl atom is sp3. Show Answer Correct Answer: B) Trigonal pyramidal ion. 60. The three important oxidation states of phosphorus are A) -3, +3 and +5. B) -3, +3 and-5. C) -3, +3 and +2. D) -3, +3 and +4. Show Answer Correct Answer: A) -3, +3 and +5. ← 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