This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. End-product of the complete hydrolysis of XeF$_{6}$ is A) XeF$_{4}$O. B) XeF$_{2}$O$_{2}$. C) XeO$_{3}$. D) XeO$_{3}$$^{-}$. Show Answer Correct Answer: C) XeO$_{3}$. 2. Which among the following is not a noble gas A) Boron. B) Argon. C) Krypton. D) Neon. Show Answer Correct Answer: A) Boron. 3. Which of the following is NOT an alkali metal? A) Lithium. B) Magnesium. C) Sodium. D) Potassium. Show Answer Correct Answer: B) Magnesium. 4. The term chalcogens is for group A) 15. B) 16. C) 17. D) 18. Show Answer Correct Answer: B) 16. 5. The shape of XeF$_{4}$ is A) Tetrahedral. B) Triangular pyramidal. C) Square planer. D) None of these. Show Answer Correct Answer: C) Square planer. 6. What is the trend in the boiling points of Group 13 elements? A) The boiling points of Group 13 elements fluctuate randomly, showing no clear trend. B) The boiling points of Group 13 elements increase down the group, with a notable decrease at gallium. C) The boiling points of Group 13 elements remain constant down the group, with no significant changes. D) The boiling points of Group 13 elements decrease down the group, with an increase at gallium. Show Answer Correct Answer: B) The boiling points of Group 13 elements increase down the group, with a notable decrease at gallium. 7. As we go down the group metallic character A) Decreases. B) Increases. C) Become constant. D) Become zero. Show Answer Correct Answer: A) Decreases. 8. Which of the following bonds has the highest energy A) Se-Se. B) Te Te. C) S S. D) O O. Show Answer Correct Answer: C) S S. 9. The catalyst used in contact process is A) V$_{2}$O$_{5}$. B) Cu$_{2}$O. C) Pt. D) MnO$_{2}$. Show Answer Correct Answer: A) V$_{2}$O$_{5}$. 10. Dry bleach is carried out by A) O$_{3}$. B) SO$_{2}$. C) Cl$_{2}$. D) O$_{2}$. Show Answer Correct Answer: A) O$_{3}$. 11. Na$_{2}$B$_{4}$O$_{7}$ + 6CaF$_{2}$ + 8H$_{2}$SO$_{4}$ A) 2NaHSO$_{4}$ + 5CaSO$_{4}$ + 2H$_{2}$O + 4BF$_{3}$. B) 2NaHSO$_{4}$ + 6CaSO$_{4}$ + 2H$_{2}$O + 4BF$_{3}$. C) 2NaHSO$_{4}$ + 6CaSO$_{4}$ + 7H$_{2}$O + 4BF$_{3}$. D) 2NaHSO$_{4}$ + 6CaSO$_{4}$ + 4H$_{2}$O + 4BF$_{3}$. Show Answer Correct Answer: C) 2NaHSO$_{4}$ + 6CaSO$_{4}$ + 7H$_{2}$O + 4BF$_{3}$. 12. Sulphur trioxide is not directly dissolved in water to form sulphuric acid because A) SO$_{3}$ does not react with water to form acid. B) SO$_{3 }$gets oxidized to H$_{2}$SO$_{3}$ when dissolved in water. C) It results in the formation of dense fog of sulphuric acid which is difficult to condense. D) Sulphur trioxide is insoluble in water due to its covalent nature. Show Answer Correct Answer: C) It results in the formation of dense fog of sulphuric acid which is difficult to condense. 13. All the noble gases except ..... occur in the atmosphere. A) Radon and helium. B) Neon and argon. C) Radon and Ognesson. D) Ognesson and krypton. Show Answer Correct Answer: C) Radon and Ognesson. 14. The type of bonds in N$_{2}$O$_{5 }$are A) Ionic. B) Covalent. C) Ionic and covalent. D) Covalent and coordinate. Show Answer Correct Answer: D) Covalent and coordinate. 15. What are the trends in boiling and melting points for group 15 elements? A) There is no trend in melting and boiling points for group 15 elements. B) Melting and boiling points increase down the group, with some exceptions. C) Melting points are higher than boiling points for all elements. D) Melting and boiling points decrease down the group. Show Answer Correct Answer: B) Melting and boiling points increase down the group, with some exceptions. 16. Pnictogens 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. 17. Bromine has the valence electronic configuration of 4s$^{2}$ 3d$^{10}$ 4p$^{5}$. Choose the correct position of Br element in Periodic Table. A) Group:15Period:4d-block. B) Group:17Period:4d-block. C) Group:17Period:4p-block. D) None of the above. Show Answer Correct Answer: C) Group:17Period:4p-block. 18. In group 15 elements as we move down the group ATOMIC SIZE A) DECREASES. B) INCREASES. C) All the above. D) None of the above. Show Answer Correct Answer: B) INCREASES. 19. What is the trend of acid-base nature with increasing atomic number of Period 3 oxides? A) Acidic, basic, amphoteric. B) Basic, amphoteric, acidic. C) Basic, acidic, amphoteric. D) Acidic, amphoteric, basic. Show Answer Correct Answer: B) Basic, amphoteric, acidic. 20. What is the element symbol of Gallium? A) Ge. B) Ga. C) Gm. D) Gn. Show Answer Correct Answer: B) Ga. 21. N combines with metals to form A) Nitrosyl chloride. B) Nitrides. C) Nitrites. D) Nitrates. Show Answer Correct Answer: B) Nitrides. 22. P-block elements are also known as A) Alkali and alkaline earth metals. B) Transition elements. C) Innertransition elements. D) Representative elements. Show Answer Correct Answer: D) Representative elements. 23. Which of the following is the lightest p-block element? A) Boron. B) Carbon. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: A) Boron. 24. Which of the following is a noble gas that is heavier than air? A) Hydrogen. B) Helium. C) Argon. D) Sodium. Show Answer Correct Answer: C) Argon. 25. Ammonia is liquid but phosphene is a gas . Choose the most plausible reason A) Due to more molar mass ammonia has maximum vanderwall force of attraction. B) Due to more molar mass, ammonia has less vander wall force of attraction. C) Due to presence of inter molecular hydrogen bonding in ammonia. D) Due to absence of hydrogen bonding in ammonia. Show Answer Correct Answer: C) Due to presence of inter molecular hydrogen bonding in ammonia. ← 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