This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which halogen cant reduce conc.h2so4 A) BOTH. B) Cl. C) Br. D) I. Show Answer Correct Answer: B) Cl. 2. Which gas is often super-cooled and used as a liquid to remove warts? A) Nitrogen. B) Oxygen. C) Helium. D) Carbon dioxide. Show Answer Correct Answer: A) Nitrogen. 3. When SO2 gas is passed through K$_{2}$Cr$_{2}$O$_{7}$ solution, the colour of the solution changes to A) Red. B) Black. C) Orange. D) Green. Show Answer Correct Answer: D) Green. 4. 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. 5. 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. 6. Which alkali metal has the highest ionization energy? A) Rubidium. B) Lithium. C) Potassium. D) Sodium. Show Answer Correct Answer: B) Lithium. 7. Compounds of boron with hydrogen are known as A) Boranes. B) Borazines. C) Borazoles. D) None. Show Answer Correct Answer: A) Boranes. 8. Which element in Group 15 is radioactive? A) Nitrogen. B) Phosphorus. C) Bismuth. D) None of the above. Show Answer Correct Answer: C) Bismuth. 9. Radioactive gas often found in basements. Formed from the radioactive decay of Radium. A) Fluorine. B) Chlorine. C) Xenon. D) Radon. Show Answer Correct Answer: D) Radon. 10. 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. 11. How does electronegativity change down a group? A) Electronegativity decreases down a group. B) Electronegativity remains constant down a group. C) Electronegativity fluctuates down a group. D) Electronegativity increases down a group. Show Answer Correct Answer: A) Electronegativity decreases down a group. 12. Among the hydrides of 15th group, which is the strongest reducing agent? A) Ammonia. B) Phosphine. C) Arsine. D) Bismuthine. Show Answer Correct Answer: D) Bismuthine. 13. Among the following elements the one which does not form a pentahalide A) P. B) Bi. C) Sb. D) N. Show Answer Correct Answer: D) N. 14. 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. 15. Which of the following increasing order is not correct as mentioned in the property with it? A) HClO B) HClO$_{4}$< HClO$_{3}$< HClO$_{2}$< HClO (oxidizing power). C) E$^{-}$ D) HIO$_{4}$ Show Answer Correct Answer: D) HIO$_{4}$ 16. Which of the following is not colourless crystalline solid and does not sublime readily at 298 K A) XeF2. B) XeO3. C) XeF4. D) XeF6. Show Answer Correct Answer: B) XeO3. 17. During a chemistry class, Saisha asked her classmates, "Which of the following elements is not a member of the p-block elements?" A) Iron. B) Carbon. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: A) Iron. 18. Which two elements are isoelectronic species A) He, Be3+. B) O2-, F-. C) N3-, P3-. D) Na+, Mg2+. Show Answer Correct Answer: A) He, Be3+. 19. The type of Hybridization in the central atom in IF$_{7}$ is A) Sp$^{3}$d$^{2}$. B) Sp$^{3}$d. C) Sp$^{3}$. D) Sp$^{3}$d$^{3}$. Show Answer Correct Answer: D) Sp$^{3}$d$^{3}$. 20. When Cl2 and F2 are reacted in equal volumes, the product formed is A) ClF2. B) ClF. C) ClF3. D) Cl2F. Show Answer Correct Answer: B) ClF. 21. 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$_{8}$. 22. 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. 23. How many valence electrons are in the element iodine? A) 1. B) 5. C) 7. D) 8. Show Answer Correct Answer: C) 7. 24. Which of the following compounds does not give N$_{2 }$ on heating A) KNO$_{3 }$. B) NH$_{4}$NO$_{2}$. C) NH$_{4}$Cr$_{2}$O$_{7}$. D) NaN$_{3}$. Show Answer Correct Answer: A) KNO$_{3 }$. 25. What causes nitrogen to be chemically inert? A) Multiple bond formation in the molecule. B) Absence of bond polarity. C) Short internuclear distance. D) High bond energy. Show Answer Correct Answer: D) High bond energy. ← 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 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 10Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books