This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The correct order of acidic strength of hydrogen halides are A) HF B) HF C) HI D) HI Show Answer Correct Answer: A) HF 2. Glows red/orange when electricity is passed through it. A) Helium. B) Neon. C) Argon. D) Oxgyen. Show Answer Correct Answer: B) Neon. 3. The most commonly used reducing agent is A) AlCl3. B) PbCl2. C) SnCl4. D) SnCl2. Show Answer Correct Answer: D) SnCl2. 4. The molecular shape of SF$_{4 }$is A) Square planar. B) See-saw. C) Tetrahedral. D) Bent 'T' shape. Show Answer Correct Answer: B) See-saw. 5. General electron configuration of p-block elements A) Ns1np6. B) Ns2np6. C) Ns2np5. D) Ns1np5. Show Answer Correct Answer: A) Ns1np6. 6. ..... provides inert atmosphere for high temperature Metallurgical process. A) Helium. B) Argon. C) Xenon. D) Radon. Show Answer Correct Answer: B) Argon. 7. Which of the following pairs is not correctly matched? A) Allotropic form of S which is more stable at room temperature-Rhombic. B) The hydride of group 16 which is liquid at room temperature-water. C) The gas formed in the upper layers of atmosphere by action of UV radiations. D) The catalyst use in the manufacture of H$_{2}$SO$_{4}$ by contact process-Vandium pentoxide. Show Answer Correct Answer: C) The gas formed in the upper layers of atmosphere by action of UV radiations. 8. The hybridizations of Boron and Nitrogen in Borazine are respectively A) Sp$^{2}$ and sp$^{3}$. B) Sp$^{2}$ and sp$^{2}$. C) Sp$^{3}$ and sp$^{3}$. D) Sp$^{3}$ and sp$^{2}$. Show Answer Correct Answer: B) Sp$^{2}$ and sp$^{2}$. 9. The following properties are the properties of Magnesium and its oxides except A) Magnesium reacts with cold water to produce magnesium hydroxide and hydrogen gas. B) Magnesium oxide is a basic oxide. C) Magnesium oxide used as refractory lining of for furnace. D) Magnesium can conduct electricity. Show Answer Correct Answer: A) Magnesium reacts with cold water to produce magnesium hydroxide and hydrogen gas. 10. Which of the following is true for sulphate ion A) Covalency of S is 4. B) Hybridization on S atom is sp3d. C) Tetrahedral ion. D) Number of lone pairs is 9. Show Answer Correct Answer: C) Tetrahedral ion. 11. Oleum is ..... A) H$_{2}$SO$_{4}$. B) H$_{2}$SO$_{3}$. C) H$_{2}$S$_{2}$O$_{8}$. D) H$_{2}$S$_{2}$O$_{7}$. Show Answer Correct Answer: D) H$_{2}$S$_{2}$O$_{7}$. 12. Which is a metalloid A) C. B) Si. C) Ge. D) Sn. Show Answer Correct Answer: C) Ge. 13. Group-16 elements in increasing order of atomic numbers are ..... A) Oxygen, selenium, tellurium, polonium, sulphur. B) Oxygen, sulphur, selenium, polonium, tellurium. C) Oxygen, selenium, sulphur, , tellurium, polonium. D) Oxygen, sulphur, selenium, tellurium, polonium. Show Answer Correct Answer: D) Oxygen, sulphur, selenium, tellurium, polonium. 14. What is the common use of silicon from Group 14? A) Silicon is primarily used in semiconductors and solar cells. B) Silicon is primarily utilized in food packaging materials. C) Silicon is mainly used in glass production. D) Silicon is often found in fertilizers and pesticides. Show Answer Correct Answer: A) Silicon is primarily used in semiconductors and solar cells. 15. When copper is heated with conc. HNO$_{3}$ it produces A) Cu(NO$_{3}$)$_{2}$, NO and NO$_{2}$. B) Cu(NO$_{3}$)$_{2}$, H$_{2}$O and N$_{2}$O. C) Cu(NO$_{3}$)$_{2}$, H$_{2}$O and NO$_{2}$. D) Cu(NO$_{3}$)$_{2}$, H$_{2}$O and NO. Show Answer Correct Answer: C) Cu(NO$_{3}$)$_{2}$, H$_{2}$O and NO$_{2}$. 16. What is the oxidation state of nitrogen in dinitrogen pentaoxide A) +5. B) +6. C) +3. D) +2. Show Answer Correct Answer: A) +5. 17. Reaction of HNO3 with I, S, P and C gives respectively. A) HIO3, H2SO4, H3PO4, CO2. B) HIO3, H2SO4, H3PO3and CO2. C) I2O5, H2SO4, H3PO4, CO. D) I2O5, SO2, P2O5, CO2. Show Answer Correct Answer: A) HIO3, H2SO4, H3PO4, CO2. 18. Which one of the following compounds is most explosive A) NCl$_{3}$. B) P Cl$_{3}$. C) As Cl$_{3}$. D) NF$_{3}$. Show Answer Correct Answer: A) NCl$_{3}$. 19. On heating lead nitrate forms oxides of nitrogen and lead. The oxides formed are ..... A) N$_{2}$O, PbO. B) NO$_{2}$, PbO. C) NO, PbO. D) NO, PbO$_{2}$. Show Answer Correct Answer: B) NO$_{2}$, PbO. 20. What is the molecular formula of chilie salt petre? A) KNO3. B) NaNO3. C) Ca(NO3)2. D) Ba(NO3)2. Show Answer Correct Answer: B) NaNO3. 21. PCl$_{5 }$exists as ..... in the solid state A) PCl$_{5 }$. B) PCl$_{3}$. C) PCl$_{6}$$^{+}$. D) [PCl$_{4}$]$^{+}$[PCl$_{6}$]$^{-}$. Show Answer Correct Answer: D) [PCl$_{4}$]$^{+}$[PCl$_{6}$]$^{-}$. 22. Which of the following oxides is acidic? A) B2O3. B) Al2O3. C) Ga2O3. D) In2O3. Show Answer Correct Answer: A) B2O3. 23. Correct statement for Ionisation enthalpies of Cr, Mn & Fe is A) Order of IE$_{1}$ is V > Cr < Mn. B) Order of IE$_{2}$ is V < Cr < Mn. C) Order of IE$_{2}$ is V < Cr > Mn. D) Order of IE$_{1}$ is V > Cr > Mn. Show Answer Correct Answer: C) Order of IE$_{2}$ is V < Cr > Mn. 24. Arrange the following hydrides of group 16 elements in order of increasing stability A) H$_{2}$SH$_{2}$Se. B) H$_{2}$O C) H$_{2}$O< H$_{2}$S< H$_{2}$Se D) H$_{2}$Te< H$_{2}$Se< H$_{2}$S< H$_{2}$O. Show Answer Correct Answer: D) H$_{2}$Te< H$_{2}$Se< H$_{2}$S< H$_{2}$O. 25. Bismuth forms stable compound in +3 state than in +5 state . Why? A) Inert pair effect. B) Doesnot form stable compound. C) All the above. D) None of the above. Show Answer Correct Answer: A) Inert pair effect. ← 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 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books