This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 29 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Maximum oxidation state of group 15 elements A) +5. B) +6. C) +4. D) +3. Show Answer Correct Answer: A) +5. 2. The decreasing order of boiling points of the following hydrides is A) NH$_{3}$> SbH$_{3}$> AsH$_{3}$>PH$_{3}$. B) PH$_{3}$ >AsH$_{3}$> SbH$_{3}$> NH$_{3}$. C) SbH$_{3}$> NH$_{3}$> AsH$_{3}$> PH$_{3}$. D) SbH$_{3}$>AsH$_{3}$>PH$_{3}$>NH$_{3}$. Show Answer Correct Answer: C) SbH$_{3}$> NH$_{3}$> AsH$_{3}$> PH$_{3}$. 3. 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. 4. 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) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 5. Copper carbonate + hydrochloric acid $\rightarrow$ A) Copper chloride + hydrogen. B) Copper chloride + water. C) Copper chloride + water + hydrogen. D) Copper chloride + water + carbondioxide. Show Answer Correct Answer: D) Copper chloride + water + carbondioxide. 6. 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. 7. Which of the following is the wrong statement? A) Ozone is a paramagnetic gas. B) The two oxygen-oxygen bond length in ozone are identical. C) O$_{3}$ molecule is bent shape. D) Ozone is violet-black in solid state. Show Answer Correct Answer: A) Ozone is a paramagnetic gas. 8. 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) 9. B) 12. C) 16. D) 19. Show Answer Correct Answer: A) 9. 9. 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. 10. The strongest acid A) HI. B) HCl. C) HF. D) HBr. Show Answer Correct Answer: A) HI. 11. Which of the following gas is used for providing inert atmosphere for filling electric bulbs? A) Argon. B) Helium. C) Neon. D) Xenon. Show Answer Correct Answer: A) Argon. 12. What are the elements in group 18 (the far right) of the periodic table called? A) Alkali metals. B) Alkaline earth metals. C) Halogens. D) Noble gases. Show Answer Correct Answer: D) Noble gases. 13. 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. 14. 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. 15. What is the maximum covalency of arsenic? A) 6. B) 4. C) 2. D) 8. Show Answer Correct Answer: A) 6. 16. What is the trend in atomic radius across a period? A) The atomic radius remains constant across a period. B) The atomic radius decreases across a period. C) The atomic radius fluctuates across a period. D) The atomic radius increases across a period. Show Answer Correct Answer: B) The atomic radius decreases across a period. 17. 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. 18. Which Group 15 element is known for its toxic properties? A) Phosphorus. B) Bismuth. C) Arsenic. D) Nitrogen. Show Answer Correct Answer: A) Phosphorus. 19. 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. 20. 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. 21. The oxidation number of I in HIO $_{4}$ A) +4. B) +3. C) + 7. D) + 5. Show Answer Correct Answer: C) + 7. 22. Which of the following contains nitrogen in-1 oxidation state? A) NO. B) NH2OH. C) N2O3. D) N2H4. Show Answer Correct Answer: B) NH2OH. 23. 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. 24. What is the atomic number of antimony? A) 85. B) 114. C) 84. D) 33. Show Answer Correct Answer: A) 85. 25. Phosphorus reacts to excess supply of chlorine to form ..... A) PCl. B) PCl$_{3}$. C) PCl$_{5}$. D) PCl$_{4}$. Show Answer Correct Answer: C) PCl$_{5}$. ← PreviousNext →Related 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 8Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 9Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books