This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 25 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Zeolites are microporous, aluminosilicate minerals. Sodium zeolite is an important synthetic zeolite that is widely used to soften hard water. Which of the following explains how sodium zeolite helps to soften hard water? A) It replaces the Ca$^{2+}$ ions with Na$^{+}$ ions. B) It reduces the surface tension of water. C) It lowers the solubility product of the insoluble salt. D) It helps to break the calcium and magnesium deposits in water. Show Answer Correct Answer: A) It replaces the Ca$^{2+}$ ions with Na$^{+}$ ions. 2. Which of the following gases may act as both as an oxidizing and reducing agent A) H$_{2}$S. B) SO$_{3}$. C) SO$_{2}$. D) O$_{2}$. Show Answer Correct Answer: C) SO$_{2}$. 3. What is the first step in the preparation of silicones A) Preparation of silanols. B) Preparation of dialkyl or diaryl silicon halides. C) Polymerization of silanols. D) Hydrolysis of intermediate. Show Answer Correct Answer: B) Preparation of dialkyl or diaryl silicon halides. 4. The shape of IF7 is A) T-Shape. B) Planar. C) Square pyramidal. D) Pentagonal bipyramidal. Show Answer Correct Answer: D) Pentagonal bipyramidal. 5. N is used to fill electric bulbs because A) It is lighter than air. B) It does not support combustion. C) It is non toxic. D) It makes the bulb to glow. Show Answer Correct Answer: B) It does not support combustion. 6. What is the trend of ionic radii in alkali metals as you move down the group? A) Increases. B) Decreases. C) Remains constant. D) Fluctuates. Show Answer Correct Answer: A) Increases. 7. Rohan is studying the periodic table in his chemistry class. How does the atomic radius change as we move from top to bottom in a group? A) Gradually increase. B) Gradually decrease. C) Remains constant. D) First decrease then increase. Show Answer Correct Answer: A) Gradually increase. 8. For advertisement, the coloured discharge tubes contain: A) He. B) Ne. C) Kr. D) Xe. Show Answer Correct Answer: B) Ne. 9. Which of the following options are not in accordance with the propertymentioned against them? A) (i) F$_{2}$ > Cl$_{2}$ > Br$_{2 }$> I$_{2}$ Oxidising power. B) (ii) MI < MBr < MCl < MF Ionic character of metal halide. C) (iii) F$_{2}$ > Cl$_{2}$ > Br$_{2 }$> I$_{2}$ Bond dissociation enthalpy. D) (iv) HI < HBr < HCl < HF Bond dissociation enthalpy. Show Answer Correct Answer: C) (iii) F$_{2}$ > Cl$_{2}$ > Br$_{2 }$> I$_{2}$ Bond dissociation enthalpy. 10. Buckminster fullerene is A) C 60. B) C90. C) Pure diamond. D) Graphite. Show Answer Correct Answer: A) C 60. 11. The shape of p-orbital is A) Dumbbell. B) Spherical. C) Planar. D) None of these. Show Answer Correct Answer: A) Dumbbell. 12. The shape of XeOF2 is A) Linear. B) T shaped. C) Pyramidal. D) None. Show Answer Correct Answer: B) T shaped. 13. Which of the following is the most powerful oxidizing agent? A) Fluorine. B) Chlorine. C) Iodine. D) Bromine. Show Answer Correct Answer: A) Fluorine. 14. Which Group 14 element is used in semiconductors? A) Tin. B) Silicon. C) Germanium. D) Lead. Show Answer Correct Answer: B) Silicon. 15. Hypochlorous acid and perchloric acid respectively are A) HOCl and HClO$_{4}$. B) HOCI and HClO$_{3}$. C) HClO$_{2}$ and HClO$_{3}$. D) HCOI$_{2}$ and HClO$_{4}$. Show Answer Correct Answer: A) HOCl and HClO$_{4}$. 16. Which noble gas is found in signs or light displays? A) Krypton. B) Helium. C) Argon. D) Neon. Show Answer Correct Answer: D) Neon. 17. Which of the following compounds of Sulphur does not exist? A) Na$_{2}$S$_{2}$O$_{3}$. B) SF$_{6}$. C) SCl$_{6}$. D) SO$_{2}$Cl$_{2}$. Show Answer Correct Answer: C) SCl$_{6}$. 18. Which of the following is not true for peroxodisulphate ion A) Covalency of S is 6. B) Oxidation number of terminal oxygen atoms is-2. C) Oxidation number of both bridged oxygen atoms is-1. D) Number of lone pairs of electrons is 16. Show Answer Correct Answer: D) Number of lone pairs of electrons is 16. 19. The colour of chorine gas A) Yellow. B) Reddish brown. C) Greenish yellow. D) Violet. Show Answer Correct Answer: C) Greenish yellow. 20. P-block element consists of the groups A) 1 & 2. B) 3-12. C) 13-17. D) 13-18. Show Answer Correct Answer: D) 13-18. 21. Which Group 15 element is used in the manufacture of semiconductors? A) Phosphorus. B) Boron. C) Arsenic. D) Nitrogen. Show Answer Correct Answer: A) Phosphorus. 22. XeF$_{6 on complete hydrolysis produces }$ A) XeOF $_{4}$. B) XeO$_{2F 2}$. C) Xe O $_{3}$$^{ }$. D) Xe O $_{2}$. Show Answer Correct Answer: C) Xe O $_{3}$$^{ }$. 23. Which of the following oxides is known for its acidic properties? A) SO2. B) K2O. C) Al2O3. D) FeO. Show Answer Correct Answer: A) SO2. 24. What is the property of silicon that enables it to be used as a semiconductor? A) Has mobile valence electrons. B) Has a giant, crystalline crystal structure. C) Has strong Si-Si covalent bonds. D) Exhibits metallic and non-metallic properties. Show Answer Correct Answer: A) Has mobile valence electrons. 25. Fluorine differs from rest of the halogens in some of its properties. This is due to A) Smaller size and high electonegativity. B) Lack of d orbitals. C) Low bond dissociation enthalpy. D) All of the above. Show Answer Correct Answer: D) All of the above. ← 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