This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 2 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. On heating a mixture of NH$_{4}$Cl & KNO$_{3}$ we get A) NO. B) NH$_{4}$NO$_{3}$. C) N$_{2}$. D) KNH$_{4}$(NO$_{3}$)$_{2}$. Show Answer Correct Answer: C) N$_{2}$. 2. Chalcogens are A) Group 15 elements. B) Group 16 elements. C) Group 17 elements. D) Group 18 elements. Show Answer Correct Answer: B) Group 16 elements. 3. Which group 2 element doesnt react with water A) Be. B) Mg. C) Ca. D) Sr. Show Answer Correct Answer: A) Be. 4. Disulphuric acid is also known as A) Caro's acid. B) Marshal's acid. C) Oleum. D) Peroxomonosulphuric acid. Show Answer Correct Answer: C) Oleum. 5. Nitrogen shows maximum covalency of A) 3. B) 4. C) 5. D) None of these. Show Answer Correct Answer: B) 4. 6. Which of the following is not a pseudohalogen? A) (CN)$_{2}$. B) (OCN)$_{2}$. C) (SCN)$_{2}$. D) (NO$_{2}$)$_{2}$. Show Answer Correct Answer: D) (NO$_{2}$)$_{2}$. 7. Inorganic Benzene is A) Benzene. B) Napthalene. C) Borazole. D) None of the above. Show Answer Correct Answer: C) Borazole. 8. What role do s and p-block elements play in biological systems? A) S and p-block elements are crucial for forming biomolecules and supporting cellular functions. B) S and p-block elements are only found in inorganic compounds. C) S and p-block elements have no significant role in living organisms. D) S and p-block elements are primarily used in industrial processes. Show Answer Correct Answer: A) S and p-block elements are crucial for forming biomolecules and supporting cellular functions. 9. Si2O7 is A) Pyrosilicate. B) Sheet silicate. C) Chain silicate. D) Orthodox silicate. Show Answer Correct Answer: A) Pyrosilicate. 10. The comparatively high boiling point of hydrogen fluoride is due to A) High reactivity of fluorine. B) Small size of H atom. C) Formation of H bonds. D) Small size of fluorine. Show Answer Correct Answer: C) Formation of H bonds. 11. Which compound was the first compound of noble gas? A) XePtF$_{6}$. B) ArPtF$_{6}$. C) NePtF$_{6}$. D) None. Show Answer Correct Answer: A) XePtF$_{6}$. 12. Fill in the blanks by choosing an appropriate option (i) is a synthetic radioactive element of group 15 having electronic configuration (ii). A) $_{116}$Lv [Rn] 5f$^{14}$ 6d$^{10}$7s$^{2}$p$^{4}$. B) $_{115}$Mc [Rn] 5f$^{14}$ 6d$^{10}$7s$^{2}$p$^{3}$. C) $_{117}$Fl [Rn] 5f$^{14}$ 6d$^{10}$7s$^{2}$p$^{2}$. D) $_{115}$Mc [Xe] 5f$^{14}$ 6d$^{10}$7s$^{2}$p$^{3}$. Show Answer Correct Answer: B) $_{115}$Mc [Rn] 5f$^{14}$ 6d$^{10}$7s$^{2}$p$^{3}$. 13. Which of the following compounds will not give ammonia on heating? A) NH$_{2}$CONH$_{2}$. B) NH$_{4}$Cl. C) NH$_{4}$NO$_{2}$. D) (NH$_{4}$)$_{2}$SO$_{4}$. Show Answer Correct Answer: C) NH$_{4}$NO$_{2}$. 14. Which group does selenium belong to A) Group 16. B) Group 13. C) Group 2. D) Group 14. Show Answer Correct Answer: A) Group 16. 15. The water repelling character of silicones is due to A) Presence of alkyl or aryl groups. B) Strong Si-O-Si linkage. C) Tetravalency of silicon. D) Chemical inertness. Show Answer Correct Answer: A) Presence of alkyl or aryl groups. 16. Per-carbonates contain: A) Extra oxygen atoms. B) Extra carbon atoms. C) Hydrogen bonding. D) Free radicals. Show Answer Correct Answer: A) Extra oxygen atoms. 17. Choose the tribasic acid A) H$_{3}$PO$_{4}$. B) H$_{3}$PO$_{3}$. C) H$_{3}$PO$_{2}$. D) H$_{2}$P$_{2}$O$_{7}$. Show Answer Correct Answer: A) H$_{3}$PO$_{4}$. 18. Among the given statements about the +4 oxidation state in Group 14, which is incorrect? A) Tin (Sn) and lead (Pb) prefer the +4 oxidation state due to the inert pair effect. B) Silicon (Si) readily forms compounds in the +4 oxidation state, indicative of its group characteristics. C) Carbon (C) exhibits stability in the +4 oxidation state, a common feature across Group 14 elements. D) None of the above. Show Answer Correct Answer: A) Tin (Sn) and lead (Pb) prefer the +4 oxidation state due to the inert pair effect. 19. Reactivity of halogen decreases going down the group because A) The 8th electron difficult to attract by nucleus. B) Atomic size decreases down the group. C) Electrons are closer to the nucleus. D) Screening effect decreases. Show Answer Correct Answer: A) The 8th electron difficult to attract by nucleus. 20. In the structure of PCl$_{5}$, the P-Cl$_{axial}$ bonds are longer than P-Cl$_{equatorial}$ bond becauseIn the structure of PCl$_{5}$, the P-Cl$_{axial}$ bonds are longer than P-Cl$_{equatorial}$ bond because A) Equatorial bond pairs suffer more repulsion. B) Axial bond pairs suffer more repulsion. C) Axial bond pairs suffer less repulsion. D) Unequal bond lengths are more stable. Show Answer Correct Answer: B) Axial bond pairs suffer more repulsion. 21. Correct order of bond dissociation enthalpy is A) Br$_{2}$ < Cl$_{2}$ < F$_{2 }$ < $_{ }$I$_{2}$. B) I$_{2}$ < Br$_{2}$ < F$_{2 }$ < Cl$_{2}$. C) I$_{2}$ < Br$_{2}$ < Cl$_{2}$ < F$_{2}$. D) I$_{2}$ < F$_{2}$ < Br$_{2}$ < Cl$_{2}$. Show Answer Correct Answer: D) I$_{2}$ < F$_{2}$ < Br$_{2}$ < Cl$_{2}$. 22. SO2 oxidation state is A) 4. B) 3. C) 2. D) 6. Show Answer Correct Answer: A) 4. 23. S-O-O-S bond is present in A) H$_{2}$S$_{2}$O$_{7}$. B) H$_{2}$S$_{2}$O$_{8}$. C) H$_{2}$S$_{2}$O$_{3}$. D) H$_{2}$SO$_{4}$. Show Answer Correct Answer: B) H$_{2}$S$_{2}$O$_{8}$. 24. Which of the following statements is true about p-block elements? A) They can form multiple types of bonds. B) They are exclusively non-metals. C) They have a high electronegativity. D) They are found in groups 13 to 18 of the periodic table. Show Answer Correct Answer: D) They are found in groups 13 to 18 of the periodic table. 25. Thermal stability of hydrides of group 15 element is as per order A) NH3>PH3>AsH3>SbH3>BiH3. B) NH3 C) AsH3>SbH3>BiH3>NH3>PH3. D) NH3>PH3>AsH3>SbH3>BiH3NH3PH3>AsH3>SbH3>BiH3>NH3. Show Answer Correct Answer: A) NH3>PH3>AsH3>SbH3>BiH3. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 1Class 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 10Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books