This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 28 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. One example of pseudohalogen is A) CO2. B) SO3. C) (CN)2. D) ICl. Show Answer Correct Answer: C) (CN)2. 2. Which has highest value of electrical conductivity in period 3 A) Si. B) Al. C) P. D) Mg. Show Answer Correct Answer: B) Al. 3. The most stable oxidation state of Ti is-: A) +5. B) +2. C) +3. D) +4. Show Answer Correct Answer: D) +4. 4. Reducing property of hydrides of Nitrogen family is A) NH$_{3}$ < PH$_{3 }$< ASH$_{3}$ < SbH$_{3 }$< BiH$_{3}$. B) NH$_{3}$ > PH$_{3 }$> SH$_{3}$ > SbH$_{3 }$> BiH$_{3}$. C) NH$_{3}$ < PH$_{3 }$< $_{ }$ BiH$_{3 }$< ASH$_{3}$ < SbH$_{3}$. D) NH$_{3}$ > PH$_{3 }$> $_{ }$ BiH$_{3 }$> ASH$_{3}$ > SbH$_{3}$. Show Answer Correct Answer: A) NH$_{3}$ < PH$_{3 }$< ASH$_{3}$ < SbH$_{3 }$< BiH$_{3}$. 5. Which of the following is a coloured ions A) Sc$^{3+}$. B) Ti$^{4+}$. C) Ni$^{2+}$. D) Ag$^{+}$. Show Answer Correct Answer: C) Ni$^{2+}$. 6. Which of the following elements exists in +1 oxidation state rather than +3 due to the inert pair effect? A) Boron. B) Silicon. C) Thallium. D) Nitrogen. Show Answer Correct Answer: C) Thallium. 7. The element which forms oxides in all oxidation states +I to + V is A) N. B) P. C) Sb. D) As. Show Answer Correct Answer: A) N. 8. Which one is used in the manufacture of bleaches A) Hydrochloric caid. B) Sodium hydroxide. C) Silver iodide. D) Hydrogen. Show Answer Correct Answer: B) Sodium hydroxide. 9. What is the atomic weight of aluminum? A) 26.98. B) 35.45. C) 20.18. D) 79.90. Show Answer Correct Answer: A) 26.98. 10. Which element in group 15 has the highest metallic character? A) Nitrogen. B) Phosphorus. C) Arsenic. D) Antimony. Show Answer Correct Answer: D) Antimony. 11. Which of the following is used to prepare Cl$_{2}$ gas at room temperature from conc. HCl? A) NaOH. B) H$_{2}$S. C) KMnO$_{4}$. D) Cr$_{2}$O$_{3}$. Show Answer Correct Answer: C) KMnO$_{4}$. 12. Sulphur molecule is A) Diatomic. B) Triatomic. C) Tetratomic. D) Octa-atomic. Show Answer Correct Answer: D) Octa-atomic. 13. As we move down the group reducing character of group 15 elements A) Increases. B) Decreases. C) Remain constant. D) None of the above. Show Answer Correct Answer: A) Increases. 14. Which of the following elements will form giant covalent oxide? A) Na. B) Mg. C) Si. D) Cl. Show Answer Correct Answer: C) Si. 15. Which alkali metal hydroxide is the strongest base? A) LiOH. B) NaOH. C) KOH. D) CsOH. Show Answer Correct Answer: D) CsOH. 16. What is the atomic number of bromine? A) 17. B) 13. C) 35. D) 10. Show Answer Correct Answer: C) 35. 17. Diborane is ..... A) B$_{2}$H$_{8}$. B) B$_{4}$H$_{10}$. C) B$_{2}$H$_{3}$. D) B$_{2}$H$_{6}$. Show Answer Correct Answer: D) B$_{2}$H$_{6}$. 18. Fill in the blanks:i) Ca$_{2}$P$_{2}$ +6HCl $\rightarrow$ 3CaCl$_{2}$+2 pii) P$_{4}$ + 3NaOH+ 3H$_{2}$O $\rightarrow$ q +3NaH$_{2}$PO$_{2}$iii) PH$_{4}$I + KOH $\rightarrow$ KI + H$_{2}$O+ rp, q & r respectively are A) PCl$_{3}$, H$_{3}$PO$_{4, }$PH$_{3}$. B) PCl$_{3}$, PH$_{3}$, P$_{4}$O$_{6}$. C) PH$_{3}$, H$_{3}$PO$_{3}$PI$_{3}$. D) PH$_{3}$, PH$_{3}$, PH$_{3}$. Show Answer Correct Answer: D) PH$_{3}$, PH$_{3}$, PH$_{3}$. 19. Which of the following pair behaves as strongest and weakest base hydride respectively NH$_{3}$, PH$_{3}$, AsH$_{3}$;, SbH$_{3}$, BiH$_{3}$? A) NH$_{3}$, PH$_{3}$;. B) NH$_{3}$, BiH$_{3}$. C) PH$_{3}$, BiH$_{3}$. D) BiH$_{3, }$AsH$_{3}$. Show Answer Correct Answer: B) NH$_{3}$, BiH$_{3}$. 20. What is the removal of oxygen from a substance called? A) Reduction. B) Extraction. C) Electrolysis. D) Oxidation. Show Answer Correct Answer: A) Reduction. 21. Which element in Group 14 is a metalloid? A) Carbon (C). B) Lead (Pb). C) Tin (Sn). D) Silicon (Si) and Germanium (Ge). Show Answer Correct Answer: D) Silicon (Si) and Germanium (Ge). 22. Maximum covalency of N is A) 3. B) 4. C) 5. D) 6. Show Answer Correct Answer: B) 4. 23. The most abundant inert gas in the atmosphere is A) He. B) Ne. C) Ar. D) Xe. Show Answer Correct Answer: C) Ar. 24. What are the common oxidation states of Group 13 elements? A) +3 and +1. B) +2 and +4. C) +1 and-1. D) +3 and 0. Show Answer Correct Answer: A) +3 and +1. 25. What is the charge on the chlorate ion? A) -1. B) -2. C) +1. D) +2. Show Answer Correct Answer: A) -1. ← 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