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 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which element has the lowest electron affinity A) Argon. B) Astatine. C) Sulphur. D) Potassium. Show Answer Correct Answer: A) Argon. 2. On heating with concentrated NaOH solution in an inert atmosphere of CO white Phosphorus gives gas Which of the following statement is incorrect the gas? A) It is highly poisonous and has smell like rotten fish. B) Its solution in water decomposes in the presence of light. C) It is more basic than $NH_3$. D) It is less basic than $NH_3$. Show Answer Correct Answer: C) It is more basic than $NH_3$. 3. Bond dissociation enthalpy of E-H (E = element) bonds is given below. Which of the compounds will act as strongest reducing agent?Compound NH$_{3}$ PH$_{3}$ AsH$_{3}$ SbH$_{3}$$\Delta$diss (E-H)/kJ mol$^{-1}$ 389 322 297 255 A) NH$_{3}$. B) PH$_{3}$. C) AsH$_{3}$. D) SbH$_{3}$. Show Answer Correct Answer: D) SbH$_{3}$. 4. Some elements exist in more than one crystalline or molecular forms in the same physical state. This phenomenon is called A) Isomerism. B) Allotropism. C) Anomerism. D) Epimerism. Show Answer Correct Answer: B) Allotropism. 5. Colours of group 7 elements are ..... A) Chlorine-pale yellow/green, Bromine orange/brown, iodine-grey shiny. B) Chlorine-grey shiny, Bromine orange/brown, iodine-Yellow. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chlorine-pale yellow/green, Bromine orange/brown, iodine-grey shiny. 6. Tl exists in +1 oxidation state rather than +3 due to A) Larger size. B) Shielding effect. C) Inert pair effect. D) Low ionisation energy. Show Answer Correct Answer: C) Inert pair effect. 7. Which of the following fluorides of xenon is impossible? A) XeF$_{4}$. B) XeF$_{2}$. C) XeF$_{3}$. D) XeF$_{6}$. Show Answer Correct Answer: C) XeF$_{3}$. 8. Among the following hydride which have more basic NH3, PH$_{3}$, AsH$_{3}$, SbH$_{3}$, BiH$_{3}$ A) NH3. B) BiH$_{3}$. C) AsH$_{3}$. D) SbH$_{3}$. E) PH$_{3}$. Show Answer Correct Answer: A) NH3. 9. Which of the following is the product of the reaction of aluminium and oxygen? A) Aluminium oxide. B) Aluminium metal. C) Aluminium ore. D) Aluminium and oxygen. Show Answer Correct Answer: A) Aluminium oxide. 10. The Oxidation states of Phosphorous and Nitrogen in Phosphonitrilic halides are respectively A) +II and +IV. B) +IV and +V. C) +III and +V. D) +V and +III. Show Answer Correct Answer: D) +V and +III. 11. Which halogen cant reduce conc.h2so4 A) BOTH. B) Cl. C) Br. D) I. Show Answer Correct Answer: B) Cl. 12. Which gas is often super-cooled and used as a liquid to remove warts? A) Helium. B) Carbon dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: C) Nitrogen. 13. When SO2 gas is passed through K$_{2}$Cr$_{2}$O$_{7}$ solution, the colour of the solution changes to A) Black. B) Orange. C) Green. D) Red. Show Answer Correct Answer: C) Green. 14. Borazine and birazole both are same A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. The shapes of SO$_{2}$ and SO$_{3}$ are respectively A) Linear and Trigonal planar. B) Angular and Trigonal planar. C) Linear and T shape. D) Angular and T shape. Show Answer Correct Answer: B) Angular and Trigonal planar. 16. Which alkali metal has the highest ionization energy? A) Lithium. B) Sodium. C) Potassium. D) Rubidium. Show Answer Correct Answer: A) Lithium. 17. Compounds of boron with hydrogen are known as A) Boranes. B) Borazines. C) Borazoles. D) None. Show Answer Correct Answer: A) Boranes. 18. Which element in Group 15 is radioactive? A) Nitrogen. B) Phosphorus. C) Bismuth. D) None of the above. Show Answer Correct Answer: C) Bismuth. 19. Radioactive gas often found in basements. Formed from the radioactive decay of Radium. A) Xenon. B) Fluorine. C) Chlorine. D) Radon. Show Answer Correct Answer: D) Radon. 20. How do P block elements differ from S block elements? A) P block elements differ from S block elements in their electron configuration and chemical properties. B) P block elements have more protons than S block elements. C) S block elements are always metals, while P block elements are always non-metals. D) P block elements are found only in the first two periods of the periodic table. Show Answer Correct Answer: A) P block elements differ from S block elements in their electron configuration and chemical properties. 21. How does electronegativity change down a group? A) Electronegativity remains constant down a group. B) Electronegativity fluctuates down a group. C) Electronegativity increases down a group. D) Electronegativity decreases down a group. Show Answer Correct Answer: D) Electronegativity decreases down a group. 22. Among the hydrides of 15th group, which is the strongest reducing agent? A) Phosphine. B) Ammonia. C) Arsine. D) Bismuthine. Show Answer Correct Answer: D) Bismuthine. 23. Among the following elements the one which does not form a pentahalide A) Sb. B) N. C) P. D) Bi. Show Answer Correct Answer: B) N. 24. What are the common uses of s-block elements in industry? A) Potassium in fertilizers. B) Common uses of s-block elements in industry include sodium in vapor lamps, magnesium in alloys, and calcium in cement production. C) Lithium in batteries. D) Barium in fireworks. Show Answer Correct Answer: B) Common uses of s-block elements in industry include sodium in vapor lamps, magnesium in alloys, and calcium in cement production. 25. Which of the following increasing order is not correct as mentioned in the property with it? A) HClO$_{4}$< HClO$_{3}$< HClO$_{2}$< HClO (oxidizing power). B) HIO$_{4}$ C) HClO D) E$^{-}$ Show Answer Correct Answer: B) HIO$_{4}$ 26. Which of the following is not colourless crystalline solid and does not sublime readily at 298 K A) XeF4. B) XeF2. C) XeF6. D) XeO3. Show Answer Correct Answer: D) XeO3. 27. During a chemistry class, Saisha asked her classmates, "Which of the following elements is not a member of the p-block elements?" A) Nitrogen. B) Carbon. C) Iron. D) Oxygen. Show Answer Correct Answer: C) Iron. 28. Which two elements are isoelectronic species A) N3-, P3-. B) O2-, F-. C) Na+, Mg2+. D) He, Be3+. Show Answer Correct Answer: D) He, Be3+. 29. The type of Hybridization in the central atom in IF$_{7}$ is A) Sp$^{3}$d$^{3}$. B) Sp$^{3}$d. C) Sp$^{3}$d$^{2}$. D) Sp$^{3}$. Show Answer Correct Answer: A) Sp$^{3}$d$^{3}$. 30. When Cl2 and F2 are reacted in equal volumes, the product formed is A) Cl2F. B) ClF3. C) ClF. D) ClF2. Show Answer Correct Answer: C) ClF. 31. Which of the following are peroxoacids of sulphur? A) H$_{2}$SO$_{5}$ and H$_{2}$S$_{2}$O$_{8}$. B) H$_{2}$SO$_{5}$ and H$_{2}$S$_{2}$O$_{7}$. C) H$_{2}$SO$_{5}$ and H$_{2}$S$_{2}$O$_{8}$. D) H$_{2}$S$_{2}$O$_{6}$ and H$_{2}$S$_{2}$O$_{7}$. Show Answer Correct Answer: A) H$_{2}$SO$_{5}$ and H$_{2}$S$_{2}$O$_{8}$. 32. In group 15 elements as we move down the group electronegativity A) Decreases. B) Increases. C) Remain constant. D) None of the above. Show Answer Correct Answer: A) Decreases. 33. How many valence electrons are in the element iodine? A) 5. B) 8. C) 7. D) 1. Show Answer Correct Answer: C) 7. 34. Which of the following compounds does not give N$_{2 }$ on heating A) NH$_{4}$NO$_{2}$. B) NH$_{4}$Cr$_{2}$O$_{7}$. C) NaN$_{3}$. D) KNO$_{3 }$. Show Answer Correct Answer: D) KNO$_{3 }$. 35. What causes nitrogen to be chemically inert? A) Short internuclear distance. B) Multiple bond formation in the molecule. C) High bond energy. D) Absence of bond polarity. Show Answer Correct Answer: C) High bond energy. 36. What is the primary reason for the high reactivity of alkali metals? A) High atomic mass. B) High density. C) Low ionization enthalpy. D) High electronegativity. Show Answer Correct Answer: C) Low ionization enthalpy. 37. Group 16 elements are also known as A) Nitrogen family. B) Oxygen family. C) Carbon family. D) Boron family. Show Answer Correct Answer: B) Oxygen family. 38. *Which of the following ion is diamagnetic in nature? A) Sc $^{+3}$. B) Fe$^{+3 }$. C) Cr$^{+2}$. D) Cu$^{+2}$. Show Answer Correct Answer: A) Sc $^{+3}$. 39. What color does lithium impart to a flame during a flame test? A) Blue. B) Yellow. C) Violet. D) Crimson red. Show Answer Correct Answer: D) Crimson red. 40. Explain the concept of hybridization in P block elements. A) Hybridization in P block elements is the mixing of atomic orbitals to create new hybrid orbitals for bonding. B) Hybridization in P block elements involves the loss of electrons during bonding. C) P block elements do not undergo hybridization in their bonding processes. D) Hybridization is only applicable to S block elements and not to P block elements. Show Answer Correct Answer: A) Hybridization in P block elements is the mixing of atomic orbitals to create new hybrid orbitals for bonding. 41. The most common oxidation state of lanthanoids is-: A) +6. B) +2. C) +4. D) +3. Show Answer Correct Answer: D) +3. 42. Which element is the most electronegative element in p-block A) Fluorine. B) Bromine. C) Chlorine. D) Nitrogen. Show Answer Correct Answer: C) Chlorine. 43. Number of electron deficient molecules among the following PH$_{3}$, B$_{2}$H$_{6}$, CCI$_{4}$, NH$_{3}$, LiH and BCl$_{3}$, is A) 0. B) 3. C) 1. D) 2. Show Answer Correct Answer: D) 2. 44. Which of the following statements is not true about Group 1 elements? A) The elements have the same oxidation number. B) The elements form basic oxides. C) The ionisation energy increases down the group. D) Reactivity of elements increases down the group. Show Answer Correct Answer: C) The ionisation energy increases down the group. 45. Which of the following properties decreases going down the group? A) Boiling point. B) Atomic radius. C) Reactivity. D) Melting point. Show Answer Correct Answer: C) Reactivity. 46. Boron shows diagonal relation with A) Aluminium. B) Neon. C) Carbon. D) Silicon. Show Answer Correct Answer: D) Silicon. 47. Pick the odd man out A) Al. B) Pb. C) In. D) Cl. Show Answer Correct Answer: D) Cl. 48. Which noble gas has the lowest boiling point? A) Helium. B) Neon. C) Argon. D) Krypton. Show Answer Correct Answer: A) Helium. 49. Assertion:Noble gases have very low boiling point.Reason:They have very weak interatomic forces. A) Assertion and Reason are true & Reason is the correct explanation of Assertion. B) Assertion and Reason are true but Reason is not correct explanation of Assertion. C) Assertion is correct but Reason is incorrect. D) Assertion is incorrect but Reason is correct. Show Answer Correct Answer: A) Assertion and Reason are true & Reason is the correct explanation of Assertion. 50. What is the general electronic configuration of p-block elements? A) Ns2 np1-6. B) Ns2 nd1-10. C) Ns2 np6. D) Ns1-2. Show Answer Correct Answer: A) Ns2 np1-6. 51. Fluorine is the best oxidizing agent because it has A) Highest electron affinity. B) Lowest electron affinity. C) Highest reduction potential. D) Highest oxidation potential. Show Answer Correct Answer: C) Highest reduction potential. 52. Identify which of the following is NOT the characteristic property of the Noble gases. A) Large negative electron gain Enthalpy. B) Sparingly soluble in water. C) Very High ionisation Enthalpy. D) Odourless. Show Answer Correct Answer: A) Large negative electron gain Enthalpy. 53. Identifying the incorrect statement about oxides formed by p-block elements: A) Silicon dioxide is an example of a p-block oxide exhibiting acidic properties. B) Beryllium oxide displays basic characteristics, aligning with its position in the p-block. C) Aluminum oxide is amphoteric, reacting with both acids and bases. D) None of the above. Show Answer Correct Answer: B) Beryllium oxide displays basic characteristics, aligning with its position in the p-block. 54. Which element is the first member of Group 15? A) Sulfur. B) Oxygen. C) Nitrogen. D) Phosphorus. Show Answer Correct Answer: C) Nitrogen. 55. The diagonal relationship between Li and Mg is due to: A) Similar atomic size and charge density. B) Same electronic configuration. C) Presence in the same group. D) Similar melting points. Show Answer Correct Answer: A) Similar atomic size and charge density. 56. The critical temperature of water is higherthan that of O2 because the H2O moleculehas-[IIT-1997] A) Two covalent bonds. B) Dipole moment. C) Fewer electrons than O2. D) V-shape. Show Answer Correct Answer: B) Dipole moment. 57. Which of the following elements can be involved in $p\pi\-d\pi$ A) Boron. B) Phosphorus. C) Nitrogen. D) Carbon. Show Answer Correct Answer: B) Phosphorus. 58. No. of lone pairs on the central atom and geometry of BrF$_{5}$ are respectively A) 0 and square planar. B) 1 and square pyramidal. C) 0 and square pyramidal. D) 1 and trigonal bipyramidal. Show Answer Correct Answer: B) 1 and square pyramidal. 59. In case of group 16 elements stability of+5 oxidation state decreases on moving down the group this is due to A) Thermo effect. B) Inert pair effect. C) Fajan effect. D) None of the above. Show Answer Correct Answer: B) Inert pair effect. 60. Phosphine is prepared by the action of A) P & H$_{2}$SO$_{4}$. B) P & NaOH. C) P & HNO$_{3}$. D) P & H$_{2}$S. Show Answer Correct Answer: B) P & NaOH. ← 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 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 8Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books