This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are the different types of atomic orbitals? A) B. B) A. C) C. D) S, p, d, f. Show Answer Correct Answer: D) S, p, d, f. 2. Which of the following is not correct regarding the properties of ionic compounds (2004-E) A) Ionic compounds have high melting and boiling points. B) Their reaction velocity in aqueous medium is very high. C) Ionic compounds in their molten and aqueous solutions do not conduct electricity. D) They are highly soluble in polar solvents. Show Answer Correct Answer: C) Ionic compounds in their molten and aqueous solutions do not conduct electricity. 3. Ionic compounds tend to have ..... melting and boiling points as the forces of electrostatic attraction between the ions in the lattice are ..... and so require ..... amounts of heat energy to break. A) Low, Weak, Less. B) Low, Strong, Less. C) High, Weak, Less. D) High, Strong, Large. Show Answer Correct Answer: D) High, Strong, Large. 4. Which electrons from the metal make up the delocalized electrons? A) Valence electrons. B) Core electrons. C) Free electrons. D) Bonding electrons. Show Answer Correct Answer: A) Valence electrons. 5. What is the measure of a tetrahedral bond angle? A) 90 Degrees. B) 109.5 Degrees. C) 120 Degrees. D) 180 Degrees. Show Answer Correct Answer: B) 109.5 Degrees. 6. What element forms a double bond? A) Oxygen. B) Chlorine. C) Sodium. D) Bromine. Show Answer Correct Answer: A) Oxygen. 7. What is bond enthalpy? A) The energy required to form a bond between two atoms. B) The energy released when a bond is formed between two atoms. C) The energy released when a bond is broken between two atoms. D) The amount of energy required to break one mole of bonds of a particular type between two atoms in a gaseous state. Show Answer Correct Answer: D) The amount of energy required to break one mole of bonds of a particular type between two atoms in a gaseous state. 8. As the number of covalent bonds between two atoms increases, the distance between the atoms ..... and the strength of the bond between them ..... A) Increases, increases. B) Decreases, decreases. C) Increases, decreases. D) Decreases, increases. Show Answer Correct Answer: D) Decreases, increases. 9. In which of the following substance, hydrogen bonding is absent? (2001 M) A) HF. B) H2O. C) CCl4. D) Salicylaldehyde. Show Answer Correct Answer: C) CCl4. 10. In PO$_{4}$$^{3-}$ ion the formal charge on the oxygen atom of P-O bond is A) +1. B) -1. C) +0.75. D) -0.75. Show Answer Correct Answer: B) -1. 11. What is the hybridization of the central atom in methane (CH4)? A) Dsp3. B) Sp. C) Sp2. D) Sp3. Show Answer Correct Answer: D) Sp3. 12. Which of the following statement is correct about CO3$^{2-}$? A) The hybridisation of central atom is Sp3. B) Its canonical structure has one C O single bond and two C=O double bonds. C) All C O bond lengths bond lengths are equal. D) Canonical structures are less stable. Show Answer Correct Answer: C) All C O bond lengths bond lengths are equal. 13. What type molecules liquid to gas? A) Vaporization. B) Freezing. C) Melting. D) None of the above. Show Answer Correct Answer: A) Vaporization. 14. Which of the following best describes the concept of resonance? A) A single Lewis structure can accurately represent a molecule. B) Multiple structures are used to represent a molecule's true nature. C) Resonance structures have real existence. D) Resonance does not affect the stability of a molecule. Show Answer Correct Answer: B) Multiple structures are used to represent a molecule's true nature. 15. What is the shape of H2O molecule? A) Trigonal planar. B) Pyramidal. C) Bent. D) None of the above. Show Answer Correct Answer: C) Bent. 16. What is the attachment between atoms called when sharing of electrons occurs? A) Ionic bond. B) Covalent bond. C) Metallic bond. D) Hydrogen bond. Show Answer Correct Answer: B) Covalent bond. 17. Which of the following molecules is not an exception to octet rule? A) BF3. B) PF5. C) CO2. D) IF7. Show Answer Correct Answer: C) CO2. 18. What is the Bohr model of the atom? A) The Bohr model of the atom suggests that protons and neutrons are located in the electron cloud. B) The Bohr model of the atom proposes that electrons are stationary within the nucleus. C) The Bohr model of the atom states that electrons move randomly around the nucleus. D) The Bohr model of the atom describes electrons orbiting the nucleus in specific energy levels. Show Answer Correct Answer: D) The Bohr model of the atom describes electrons orbiting the nucleus in specific energy levels. 19. Which one of the following is the correct set with respect to molecule, hybridization and shape? (2003-M) A) BeCl2, sp, linear. B) BeCl2, triangular planar. C) BCl3, triangular planar. D) BCl3, tetrahedral. Show Answer Correct Answer: C) BCl3, triangular planar. 20. According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible? A) Pairs of valence electrons. B) Inner shell electrons. C) Mobile Electrons. D) Electrons closest to the nucleus. Show Answer Correct Answer: A) Pairs of valence electrons. 21. Which of the following molecule has zero dipole moment? A) BeCl2. B) HCl. C) NH3. D) H2O. Show Answer Correct Answer: A) BeCl2. 22. Which of the following hydrocarbon has least carbon-carbon bond length? (2000 E) A) C2H6. B) C2H4. C) C6H6. D) C2H2. Show Answer Correct Answer: D) C2H2. 23. Bonding Pairs A) The valence electrons in an atom that are bonded or shared with other atoms. B) A property that describes the ability of a material to be permanently reshaped without breaking or cracking. C) The angle that is formed between adjacent bonds on the same atom. D) The atom around which other atoms bond in a molecule. Show Answer Correct Answer: A) The valence electrons in an atom that are bonded or shared with other atoms. 24. The number of all possible resonance structures of nitrate ion, NO$_{3}$$^{-}$ is A) 2. B) 3. C) 4. D) No resonance. Show Answer Correct Answer: B) 3. 25. Which type of hydrogen bond occurs between different molecules? A) Intramolecular hydrogen bond. B) Intermolecular hydrogen bond. C) Ionic bond. D) Covalent bond. Show Answer Correct Answer: B) Intermolecular hydrogen bond. ← 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 4Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books