This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following molecules has only ONE lone pair of electrons on the central atom? A) XeF$_{4}$. B) XeF$_{2}$. C) SF$_{6}$. D) XeF$_{6}$. Show Answer Correct Answer: D) XeF$_{6}$. 2. Ionization energy of N family is exceptionally high due to the A) Exact Half filled Configuration. B) Shielding Effect. C) Higher size. D) None of these. Show Answer Correct Answer: A) Exact Half filled Configuration. 3. General formula of silicones A) -(R2SiO)n-. B) -(RSiO)n-. C) -(R3SiO)n-. D) -(R2SiO2)n-. Show Answer Correct Answer: A) -(R2SiO)n-. 4. Maximum covalency of nitrogen is A) 6. B) 8. C) 5. D) 4. Show Answer Correct Answer: D) 4. 5. What gas is always produced when a metal reacts with acid? A) Oxygen. B) Hydrogen. C) Carbon dioxide. D) Nitrogen. Show Answer Correct Answer: B) Hydrogen. 6. Correct order of negative Electron Gain Enthalpy is A) Po < Te < O < Se < S. B) O < Po < Te < Se < S. C) Po < Te < Se < S < O. D) Po < Te < Se < O < S. Show Answer Correct Answer: B) O < Po < Te < Se < S. 7. What is the formula of Caro's acid A) H2SO3. B) H2SO4. C) H2SO5. D) H2S2O8. Show Answer Correct Answer: C) H2SO5. 8. Fill in the blanks The high reactivity of fluorine is due to its ..... dissociation energy . its shows only ..... oxidation state. It has ..... electron affinity than Cl. Among all hydrogen halides boiling points is highest for ..... A) Low, -1, lower, HF. B) High, +1, higher, HF. C) Low, +1, lower, HCl. D) High, -1, higher, HF. Show Answer Correct Answer: A) Low, -1, lower, HF. 9. P$_{4}$O$_{6 }$ reacts with cold water to form ..... A) HPO$_{4}$. B) H$_{3}$PO$_{4}$. C) H$_{3}$PO$_{3}$. D) H$_{4}$PO$_{4}$. Show Answer Correct Answer: C) H$_{3}$PO$_{3}$. 10. The shape of ClF$_{3}$ is A) Trigonal planar. B) Tetrahedral. C) T shaped. D) Pentagonal bipyramidal. Show Answer Correct Answer: C) T shaped. 11. Sulphur is completely oxidised by conc. HNO3 A) H$_{2}$SO$_{4}$. B) SO$_{2}$. C) H$_{2}$SO$_{3}$. D) H$_{2}$S$_{2}$O$_{8}$. Show Answer Correct Answer: A) H$_{2}$SO$_{4}$. 12. The correct order of bond angles (smallest first) in H2S, NH3, BF3, SiH4 is A) H2S < SiH4 < NH3 < BF3. B) NH3 < H2S < SiH4 < BF3. C) H2S < NH3 < SiH4 < BF3. D) H2S < NH3 < BF3 < SiH4. Show Answer Correct Answer: C) H2S < NH3 < SiH4 < BF3. 13. 2Na$_{2}$S$_{2}$O$_{3}$ + I2 A) Na$_{2}$S$_{4}$O$_{6}$ + 2NaI. B) NaS$_{4}$O$_{6}$ + 3NaI. C) Na$_{2}$S$_{4}$O$_{6}$ + Na$_{2}$I$_{2}$. D) Na$_{4}$S$_{4}$O$_{6}$ + 2NaI. Show Answer Correct Answer: A) Na$_{2}$S$_{4}$O$_{6}$ + 2NaI. 14. When white phosphorus is heated at 473K under high pressure, what will happen? A) No change would be observed. B) Red phosphorus is formed. C) $\alpha$-block phosphorus is formed. D) $\beta$-block phosphorus is formed. Show Answer Correct Answer: D) $\beta$-block phosphorus is formed. 15. The main ore of aluminum is: A) Bauxite. B) Galena. C) Malachite. D) Hematite. Show Answer Correct Answer: A) Bauxite. 16. N can form only one chloride with Cl which is NCl$_{3}$ whereas P can form PCl$_{3}$ and PCl$_{5}$. This is A) Due to higher to reactivity of P towards Cl than N. B) Due to absence of d-orbitals in nitrogen. C) Due to presence of multiple bonding in nitrogen. D) Due to difference in size of N & P. Show Answer Correct Answer: B) Due to absence of d-orbitals in nitrogen. 17. A translucent white waxy solid (A) reacts with excess of Cl to give a yellowish white powder(B). (B) reacts with organic compounds containing-OH group and converts them into chloro derivatives. (B) on hydrolysis give(C) and is finally converted to phosphoric acid. (A), (B) & (C) are A) P$_{4}$, PCl$_{3}$, H$_{3}$PO$_{4}$. B) P$_{4}$, PCl$_{5}$, H$_{3}$PO$_{3}$. C) P$_{4}$, PCl$_{5}$, POCl$_{3}$. D) P$_{4}$, PCl$_{3}$, POCl$_{3}$. Show Answer Correct Answer: C) P$_{4}$, PCl$_{5}$, POCl$_{3}$. 18. What is the value of 2nd Electron affinity for oxygen in kJ/mole A) -141. B) +780. C) -780. D) +141. Show Answer Correct Answer: B) +780. 19. The shape of I F $_{ 7}$ A) T shape. B) Trigonal bipyramidal. C) Linear. D) Pentagonal bipyramidal. Show Answer Correct Answer: D) Pentagonal bipyramidal. 20. 2MnO$_{2 }$+ 2H$_{2}$SO$_{4}$ A) 2MnSO$_{4}$ +2H$_{2}$O + O$_{2}$. B) 2MnSO$_{4}$ +H$_{2}$O + 2O$_{2}$. C) 2MnSO$_{4}$ +3H$_{2}$O + O$_{2}$. D) MnSO$_{4}$ +2H$_{2}$O + O$_{2}$. Show Answer Correct Answer: A) 2MnSO$_{4}$ +2H$_{2}$O + O$_{2}$. 21. All the elements on the right side of the periodic table are called ..... A) Metals. B) Metalloid. C) Nonmetals. D) None of the above. Show Answer Correct Answer: C) Nonmetals. 22. Marshall's acid is A) H$_{2}$SO$_{3}$. B) H$_{2}$S$_{2}$O$_{7}$. C) H$_{2}$S$_{2}$O$_{5}$. D) H$_{2}$S$_{2}$O. Show Answer Correct Answer: D) H$_{2}$S$_{2}$O. 23. The elements N, O, F readily forms hydrogen bonds due to their high A) Ionisation energy. B) Electron affinity. C) Electro negativity. D) Atomic radius. Show Answer Correct Answer: C) Electro negativity. 24. Emerald, Ruby, Sapphire and Topaz are ..... ore of aluminium. A) Diaspore. B) Corundum. C) Kaolin. D) Bauxite. Show Answer Correct Answer: B) Corundum. 25. ELECTRONIC CONFIGURATION is2, 2s2, 2px1, 2py1, 2pz1 represents which of the following elements? A) Oxygen. B) Fluorine. C) Nitrogen. D) Aluminium. Show Answer Correct Answer: C) Nitrogen. ← 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