This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statement is correct? (2005-E) A) The number of electrons present in the valency shell of S in SF6 is 12. B) The rates of ionic reactions are very slow. C) According to VSEPR theory, SnCl2 is the linear molecule. D) The correct order of ability to form ionic compounds among Na+, Mg2+ and Al3+ is Al3+ >> Mg2+ >> Na+. Show Answer Correct Answer: A) The number of electrons present in the valency shell of S in SF6 is 12. 2. What is the primary characteristic of an ionic bond? A) Attraction of an atom for its electrons. B) Attraction of atoms for electrons they share. C) A force that holds together atoms that are oppositely charged. D) A force that holds together atoms of the same charge. Show Answer Correct Answer: C) A force that holds together atoms that are oppositely charged. 3. Which of the following species has tetrahedral geometry? A) BH$_{4}$$^{-}$. B) NH$_{2}$$^{-}$. C) CO$_{3}$$^{2-}$. D) H$_{3}$O$^{+}$. Show Answer Correct Answer: A) BH$_{4}$$^{-}$. 4. What is the attractive force that holds atoms together in a molecule called? A) Hydrogen bond. B) Covalent bond. C) Chemical bond. D) Ionic bond. Show Answer Correct Answer: C) Chemical bond. 5. What is the shape of PF$_{5}$? A) Trigonal pyramidal. B) Trigonal bipyramidal. C) Square planar. D) T-shape. Show Answer Correct Answer: B) Trigonal bipyramidal. 6. Each atom will achieve a geometry that minimizes the repulsion between electrons A) Single bond. B) Double bond. C) Molecular formula. D) VSEPR Theory. Show Answer Correct Answer: D) VSEPR Theory. 7. What is the bond angle in a tetrahedral molecule like CH4? A) 90$^\circ$. B) 109.5$^\circ$. C) 180$^\circ$. D) 120$^\circ$. Show Answer Correct Answer: B) 109.5$^\circ$. 8. Ionization occurs when valence electrons are transferred between atoms until they reach the electron configuration of a noble gas. Writing the formula for the ionic compound therefore involves balancing the total number of positive and negative charges, taking into account the different charges on each ion. Using this knowledge, find out the product of Mg and F. A) MgF. B) Mg$_{2}$F. C) MgF$_{2}$. D) Mg$_{2}$F$_{2}$. Show Answer Correct Answer: C) MgF$_{2}$. 9. Is luster a characteristic of most metals? If yes, explain how metallic bonding accounts for this property. A) Yes, because delocalized electrons reflect light. B) No, because metals absorb light. C) Yes, because metals are transparent. D) No, because metals are opaque. Show Answer Correct Answer: A) Yes, because delocalized electrons reflect light. 10. Is ductility a characteristic of most metals? If yes, explain how metallic bonding accounts for this property. A) Yes, because metallic bonds allow atoms to slide past each other. B) No, because metallic bonds are rigid. C) Yes, because metallic bonds are ionic. D) No, because metallic bonds are covalent. Show Answer Correct Answer: A) Yes, because metallic bonds allow atoms to slide past each other. 11. What does the Valence Bond Theory explain? A) The shapes of polyatomic molecules. B) The formation of chemical bonds based on atomic orbitals, electronic configurations, and overlap criteria. C) The shapes of simple molecules based on lone pairs and bonding pairs. D) The energy released when a bond is formed between two atoms. Show Answer Correct Answer: B) The formation of chemical bonds based on atomic orbitals, electronic configurations, and overlap criteria. 12. What is the term used to describe the energy required to completely separate one mole of a solid ionic compound into gaseous constituent ions? A) Electron Affinity. B) Lattice Energy. C) Bond Energy. D) Ionization Energy. Show Answer Correct Answer: B) Lattice Energy. 13. The geometry of a molecule with 3 bonded pairs of electrons and 1 lone pair of electrons A) Tetrahedral. B) Trigonal Planar. C) Bent. D) Trigonal Pyramidal. E) Linear. Show Answer Correct Answer: D) Trigonal Pyramidal. 14. A covalent bond is A) A bond that shares electrons metallicaly. B) A bond that shares electrons with non metals. C) Metalloids bonding. D) Metals and nonmetals bonding. Show Answer Correct Answer: B) A bond that shares electrons with non metals. 15. An ionic bond results from electrical attraction between A) Cations and anions. B) Atoms. C) Dipoles. D) Orbital. Show Answer Correct Answer: A) Cations and anions. 16. How many electrons are involved in a double bond? A) 2. B) 4. C) 6. D) 8. Show Answer Correct Answer: B) 4. 17. Which of the following statements about bond angles is true? A) They are the same for all molecules. B) They cannot be measured experimentally. C) They are determined by the arrangement of orbitals around the central atom. D) They are always 90 degrees. Show Answer Correct Answer: C) They are determined by the arrangement of orbitals around the central atom. 18. The geometry of a molecule with 2 bonded pairs of electrons and 1 lone pairs of electrons A) Tetrahedral. B) Trigonal Planar. C) Bent. D) Trigonal Pyramidal. E) Linear. Show Answer Correct Answer: C) Bent. 19. Hybridization of Central carbon in the following molecule isH$_{3}$C-CH = C = CH-CH$_{3}$ A) Sp$^{2}$. B) Sp$^{3}$. C) Sp. D) None of the above. Show Answer Correct Answer: A) Sp$^{2}$. 20. What is the main postulate of the Valence Shell Electron Pair Repulsion (VSEPR) theory? A) The shape of a molecule depends upon the number of protons in the nucleus. B) The shape of a molecule depends upon the number of valence shell electron pairs around the central atom. C) The shape of a molecule depends upon the number of lone pairs around the central atom. D) The shape of a molecule depends upon the number of bonding pairs around the central atom. Show Answer Correct Answer: B) The shape of a molecule depends upon the number of valence shell electron pairs around the central atom. 21. Which of the following is an example of a molecule with an odd number of electrons? A) Ozone. B) Nitric oxide. C) Carbon dioxide. D) Methane. Show Answer Correct Answer: B) Nitric oxide. 22. State whether the given statement is true or false "Ionic bonds are non-directional" . A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. Which subatomic particle carries a negative charge? A) Nucleus. B) Neutron. C) Proton. D) Electron. Show Answer Correct Answer: D) Electron. 24. What type of overlap occurs in the formation of a pi bond? A) No overlap. B) Complete overlap. C) Sidewise overlap. D) End-to-end overlap. Show Answer Correct Answer: C) Sidewise overlap. 25. What is the crystal structure of Cesium Chloride? (2000 E) A) Body centered cubic. B) Face centered cubic. C) Tetrahedral. D) Octahedral. Show Answer Correct Answer: A) Body centered cubic. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 1Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 2Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 3Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 5Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 6Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 7Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 8Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 9Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 10Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books