This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the trend in ionization energy for p block elements? A) Ionization energy decreases across a period and increases down a group for p block elements. B) Ionization energy increases across a period and decreases down a group for p block elements. C) Ionization energy remains constant across a period and down a group for p block elements. D) Ionization energy increases down a group and decreases across a period for p block elements. Show Answer Correct Answer: B) Ionization energy increases across a period and decreases down a group for p block elements. 2. Each of the following is true for white and red phosphorus except that they A) Consist of the same kind of atoms. B) Are both soluble in CS$_{2}$. C) Can be oxidized by heating in air. D) Can be converted into one another. Show Answer Correct Answer: B) Are both soluble in CS$_{2}$. 3. B3N3H6 is A) Borazine. B) Borazole. C) Inorganic benzene. D) All. Show Answer Correct Answer: D) All. 4. How do the ionization energies of s-block elements compare to p-block elements? A) S-block elements have similar ionization energies to p-block elements. B) S-block elements have lower ionization energies than p-block elements. C) S-block elements have higher ionization energies than p-block elements. D) S-block elements have significantly higher ionization energies than d-block elements. Show Answer Correct Answer: B) S-block elements have lower ionization energies than p-block elements. 5. What is the trend in oxidation states for group 14 elements? A) The trend in oxidation states for group 14 elements is +4 for lighter elements and +2 for heavier elements. B) The oxidation states do not change across the group. C) All group 14 elements have an oxidation state of +3. D) The trend is +2 for lighter elements and +4 for heavier elements. Show Answer Correct Answer: A) The trend in oxidation states for group 14 elements is +4 for lighter elements and +2 for heavier elements. 6. The correct order of acidity of oxoacids of halogens is A) HClO B) HClO$_{4}$< HClO$_{3}$< HClO$_{2}$< HClO. C) HClO< HClO$_{4}$< HClO$_{3}$< HClO$_{2}$. D) HClO$_{4}$ Show Answer Correct Answer: A) HClO 7. When three parts of conc. HCl and one part of conc.HNO$_{3}$ is mixed, a compound X is formed. The correct option related to X is A) X is known as aqua-regia. B) X is used for dissolving gold. C) X used for decomposition of salts of water acids. D) Both (a) & (b). Show Answer Correct Answer: D) Both (a) & (b). 8. 2NH$_{3}$ + NaOCl A) N$_{2}$H$_{4}$ + NaCl + 2H$_{2}$O. B) N$_{2}$H$_{6}$ + NaCl + H$_{2}$O. C) N$_{2}$H$_{4}$ + NaCl + H$_{2}$O. D) N$_{2}$H$_{6}$ + NaCl + 2H$_{2}$O. Show Answer Correct Answer: C) N$_{2}$H$_{4}$ + NaCl + H$_{2}$O. 9. In O$_{3}$ the O-O-O bond angle is about A) 117$^{0}$. B) 180$^{0}$. C) 90$^{0}$. D) 109.5$^{0}$. Show Answer Correct Answer: A) 117$^{0}$. 10. Ammonia is a Lewis base and act as complexing agent. A) It accepts electron pair. B) It is neither electron pair donar or acceptor. C) It act as electron pair donar. D) It exhibit covalency more than five. Show Answer Correct Answer: C) It act as electron pair donar. 11. Which one of the following elements is most metallic? A) P. B) As. C) Sb. D) Bi. Show Answer Correct Answer: D) Bi. 12. Which of the following has maximum ionisation energy A) Phosphorous. B) Aluminium. C) Silicon. D) Magnesium. Show Answer Correct Answer: A) Phosphorous. 13. What is the highest oxidation state of nitrogen in its compounds? A) +5. B) +2. C) 0. D) -4. Show Answer Correct Answer: A) +5. 14. Compounds of Radon have not been isolated but only identified by a technique. The technique is called ..... A) Magnetic imaging technique. B) Radiotracer technique. C) Carbon dating technique. D) Spectrometry technique. Show Answer Correct Answer: B) Radiotracer technique. 15. Which of the following is NOT another name used for borax? A) Sodium tetraborate decahydrate. B) Tincal. C) Suhaga. D) Boric oxide. Show Answer Correct Answer: D) Boric oxide. 16. Borax is commonly used in: A) Glass and ceramics. B) Plastic manufacturing. C) Fuel cells. D) Pharmaceuticals. Show Answer Correct Answer: A) Glass and ceramics. 17. D-d transition is possible only in-: A) Cu$^{+1}$. B) Cu$^{+2}$. C) Zn$^{+2}$. D) Zn. Show Answer Correct Answer: B) Cu$^{+2}$. 18. Elements in the same group of periodic table have the same? A) Physical properties. B) Number of valence electrons. C) Number of electrons. D) Electron configuration. Show Answer Correct Answer: B) Number of valence electrons. 19. What is the name of the following ion?ClO $^{-}$ A) Chlorate ion. B) Hypochlorite ion. C) Chlorite ion. D) Perchlorate ion. Show Answer Correct Answer: B) Hypochlorite ion. 20. Noble gases do not undergo chemical changes even though high heat energy is supplied. Which of the following best describe this statement? A) Noble gases generally exist as solid in room conditions. B) Noble gases have achieved a stable octet electron arrangement. C) Noble gases have low boiling point. D) The attractive forces between atoms is very strong. Show Answer Correct Answer: B) Noble gases have achieved a stable octet electron arrangement. 21. Assertion:Fluorine exists only in-1 oxidation state.Reason:Fluorine has 2s$^{2}$2p$^{5}$ configuration with high electronegativity value.(a) Assertion is correct, reason is correct; reason is a correct explanation for assertion. (b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion (c) Assertion is correct, reason is incorrect (d) Assertion is incorrect, reason is correct A) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 22. When you mix chlorine water and sodium bromide solution you will see A) An orange brown colour. B) Fizzing. C) Blue colour. D) No change. Show Answer Correct Answer: A) An orange brown colour. 23. An amorphous solid(X) burns in air to form a gas(Y) which turns lime water milky. This gas decolourises aqueous solution of acidified KMnO$_{4}$. Gas (Y) reacts with oxygen to give another gas (Z) which is responsible for acid rain. X, Y&Z. A) C CO CO$_{2}$. B) S SO$_{2}$ SO$_{3}$. C) P P$_{2}$O$_{3}$ P$_{2}$O$_{5}$. D) S SO$_{3}$ H$_{2}$SO$_{4}$. Show Answer Correct Answer: B) S SO$_{2}$ SO$_{3}$. 24. No. of 3c-2e$^{-}$ bonds and 2c-2e$^{-}$ bonds in diborane are respectively A) 2 and 4. B) 2 and 3. C) 4 and 2. D) 3 and 3. Show Answer Correct Answer: A) 2 and 4. 25. Which one of the following atoms has the highest value of atomization enthalpy? A) Ra. B) Cs. C) Li. D) Be. Show Answer Correct Answer: D) Be. ← 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