This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 5H$_{2}$N$_{2}$O$_{2}$ + 8KMnO$_{4}$ + 12H$_{2}$SO$_{4}$ A) 8MnSO$_{4}$ + 10HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 10H$_{2}$O. B) 8MnSO$_{4}$ + 10HNO$_{3}$ + 2K$_{2}$SO$_{4}$ + 12H$_{2}$O. C) 8MnSO$_{4}$ + 5HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 12H$_{2}$O. D) 8MnSO$_{4}$ + 10HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 12H$_{2}$O. Show Answer Correct Answer: D) 8MnSO$_{4}$ + 10HNO$_{3}$ + 4K$_{2}$SO$_{4}$ + 12H$_{2}$O. 2. NaOH + cl2 $\rightarrow$ NaCl + ..... + H2Ohot and conc A) NaOCl. B) NaClo3. C) NaoCl2. D) Naclo4. Show Answer Correct Answer: B) NaClo3. 3. 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. 4. 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 & Reason is thecorrect explanation of the Assertion. B) Assertion & Reason are true but Reason is not the correct explanation of the assertion. C) Assertion is Correct but Reason is incorrect. D) Assertion is incorrect but Reason is correct. Show Answer Correct Answer: B) Assertion & Reason are true but Reason is not the correct explanation of the assertion. 5. 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. 6. What are typical oxidation state for Sc? A) -3. B) +3. C) -1. D) +1. Show Answer Correct Answer: B) +3. 7. 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) KClO$_{3}$ & NaClO$_{3}$. B) MnO$_{2}$ & Ca(OCl)$_{2}$. C) MnO$_{2}$ & KClO$_{3}$. D) MnCl$_{2}$ & COCl$_{2}$. Show Answer Correct Answer: B) MnO$_{2}$ & Ca(OCl)$_{2}$. 8. What is the shape of IF3 A) Square planar. B) Pyramidal. C) Bent T shape. D) Trigonal Bipyramidal. Show Answer Correct Answer: C) Bent T shape. 9. 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. 10. Oxidation state of Nitrogen in dinitrogen trioxide A) +6. B) +4. C) +3. D) +2. Show Answer Correct Answer: C) +3. 11. Which alkali metal has the lowest melting point? A) Francium. B) Lithium. C) Sodium. D) Potassium. Show Answer Correct Answer: A) Francium. 12. 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. 13. K$_{2}$Cr$_{2}$O$_{7}$ + H$_{2}$SO$_{4}$ + 3H$_{2}$SO$_{3}$ A) K$_{2}$SO$_{4}$ + 3CrSO$_{4}$ + 4H$_{2}$O. B) K$_{2}$SO$_{4}$ + 2Cr$_{2}$(SO$_{4}$)$_{3}$ + 4H$_{2}$O. C) K$_{2}$SO$_{4}$ + 2CrSO$_{4}$ + 4H$_{2}$O. D) K$_{2}$SO$_{4}$ + Cr$_{2}$(SO$_{4}$)$_{3}$ + 4H$_{2}$O. Show Answer Correct Answer: D) K$_{2}$SO$_{4}$ + Cr$_{2}$(SO$_{4}$)$_{3}$ + 4H$_{2}$O. 14. Which alkali metal is known for having the maximum degree of hydration? A) Rubidium. B) Sodium. C) Lithium. D) Potassium. Show Answer Correct Answer: C) Lithium. 15. 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. 16. 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. 17. 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$(iii) +6HF A) F$_{2}$ H$_{2}$O XeO$_{4}$. B) 24HF 3O$_{2}$ XeO$_{3}$. C) 2HF 2H$_{2}$O XeO. D) HF H$_{2}$O Xe$_{2}$O$_{3}$. Show Answer Correct Answer: B) 24HF 3O$_{2}$ XeO$_{3}$. 18. Sodium burns with oxygen to form A) Normal oxide. B) Peroxide. C) Superoxide. D) None. Show Answer Correct Answer: B) Peroxide. 19. 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. 20. Argon (proton number =18) is inert to any chemical reaction because A) It is light. B) It is located in Group 18. C) It has achieved stable duplet electron arrangement. D) It has achieved stable octet electron arrangement. Show Answer Correct Answer: D) It has achieved stable octet electron arrangement. 21. Which of the following two are isostructural? A) XeF2, IF$_{2}$$^{-}$. B) NH3, BF3. C) CO$_{3}$$^{2-}$. D) SO$_{3}$$^{2-}$. Show Answer Correct Answer: A) XeF2, IF$_{2}$$^{-}$. 22. PCl$_{5}$ is well known but NCl$_{5}$ is not.because, A) Nitrogen is less reactive than phosphorus. B) Nitrogen doesn't have d-orbital in its valance shell. C) Catenation tendency is weaker in Nitrogen than phosphorus. D) Size of phosphorus is larger than Nitrogen. Show Answer Correct Answer: B) Nitrogen doesn't have d-orbital in its valance shell. 23. 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) S. B) P. C) D. D) F. Show Answer Correct Answer: B) P. 24. Which of the halides of nitrogen is stable A) NF$_{3}$. B) NCl$_{3}$. C) NBr$_{3}$. D) NI$_{3}$. Show Answer Correct Answer: A) NF$_{3}$. 25. Which of the following statements is not correct for SO$_{2}$ gas? A) It act as a bleaching agent in moist conditions. B) Its dil. Solution is used as disinfectant. C) Its molecules have linear geometry. D) Acidified KMnO$_{4}$ is decolourised when SO$_{2}$ is passed through it. Show Answer Correct Answer: C) Its molecules have linear geometry. ← 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