This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 4 Chemical Bonding And Molecular Structure Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The negative and positive ions are stabilised by ..... A) Electrostatic attraction. B) Electrostatic repulsion. C) Chemical bonds. D) None of the above. Show Answer Correct Answer: A) Electrostatic attraction. 2. The molecular formula of the compound formed from B and C will be A) BC. B) BC$_{3}$. C) B$_{2}$C. D) BC$_{2}$. Show Answer Correct Answer: B) BC$_{3}$. 3. Which of the following element neither looses nor gains electrons? A) Sodium. B) Chlorine. C) Carbon. D) Nitrogen. Show Answer Correct Answer: C) Carbon. 4. An ionic bond forms when atoms ..... electrons. A) Gain. B) Share. C) Increase. D) Transfer. Show Answer Correct Answer: D) Transfer. 5. How do the metallic ions differ from the ions that exist in ionic solids? A) Metallic ions are surrounded by delocalized electrons, while ionic solid ions are not. B) Metallic ions are neutral, while ionic solid ions are charged. C) Metallic ions are smaller than ionic solid ions. D) Metallic ions are bonded covalently, while ionic solid ions are bonded ionically. Show Answer Correct Answer: A) Metallic ions are surrounded by delocalized electrons, while ionic solid ions are not. 6. In periodic table, the highly electronegative halogens and the highly electropositive alkali metals are separated by ..... A) Actinoids and lanthanides. B) Noble gases. C) D-block elements. D) None of the above. Show Answer Correct Answer: B) Noble gases. 7. What is the term for the bond formed due to the electrostatic attraction between positive and negative ions? A) Hydrogen bond. B) Covalent bond. C) Ionic bond. D) Metallic bond. Show Answer Correct Answer: C) Ionic bond. 8. Calculate the total no of sigma and pi bonds in-CH3-CH2-CH=CH-CHO A) Sigma= 12, pi=1. B) Sigma=13, pi=2. C) Sigma=13, pi=1. D) None of the above. Show Answer Correct Answer: B) Sigma=13, pi=2. 9. The overall charge of a formula unit for an ionic compound: A) Is always zero. B) Is always negative. C) Is always positive. D) May have any value. Show Answer Correct Answer: A) Is always zero. 10. The bond energies (in KJmol-1) of P-H, As-H and N-H respectively are (2002-E) A) 247, 318 and 389. B) 247, 389 and 318. C) 318, 389 and 247. D) 318, 247 and 389. Show Answer Correct Answer: D) 318, 247 and 389. 11. Which of the following is correct pair? (2000 E) A) BeCl2, linear. B) NH3, linear. C) CO2, tetrahedral. D) BF3, octahedral. Show Answer Correct Answer: A) BeCl2, linear. 12. Is low boiling point a characteristic of most metals? If yes, explain how metallic bonding accounts for this property. A) Yes, because metallic bonds are weak. B) No, because metallic bonds are strong. C) Yes, because metallic bonds are ionic. D) No, because metallic bonds are covalent. Show Answer Correct Answer: B) No, because metallic bonds are strong. 13. Why NH3 has distorted shape? Choose the most appropriate option: A) Because nitrogen makes three bonds only. B) Because of presence of lone pair. C) None of the above. D) None of the above. Show Answer Correct Answer: B) Because of presence of lone pair. 14. Hybrid orbitals are more stable bond than atomic orbitals A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. The types of hybrid orbitals of nitrogen in NO2$^{+}$, NO3$^{-}$ and NH4$^{+ respectively are expected to be }$ A) Sp, Sp3, Sp2. B) Sp, Sp2, Sp3. C) Sp3, Sp, sp2. D) Sp2, sp3, Sp. Show Answer Correct Answer: B) Sp, Sp2, Sp3. 16. What is the shape of the H2O molecule? A) Bent. B) Linear. C) Trigonal Planar. D) Tetrahedral. Show Answer Correct Answer: A) Bent. 17. Molecular Geometry A) The arrangement of electrons in relation to the central atom of the molecule. B) The valence electrons in an atom that are bonded or shared with other atoms. C) A property that describes the ability of a material to be permanently reshaped without breaking or cracking. D) The angle that is formed between adjacent bonds on the same atom. Show Answer Correct Answer: A) The arrangement of electrons in relation to the central atom of the molecule. 18. Which among the following is diamagnetic? A) N2. B) O2. C) N2$^{2-}$. D) O2$^{-}$. Show Answer Correct Answer: A) N2. 19. What is the VSEPR theory used to predict? A) Bond Strength. B) Polarity. C) Molecular Shape. D) Electronegativity. Show Answer Correct Answer: C) Molecular Shape. 20. What is the shape of a molecule with four bonding pairs and no lone pairs? A) Tetrahedral. B) Trigonal planar. C) Octahedral. D) Linear. Show Answer Correct Answer: A) Tetrahedral. 21. In nitrogen molecule, number of electrons shared by each nitrogen are A) 2. B) 3. C) 4. D) None of the above. Show Answer Correct Answer: B) 3. 22. In electron transfer involving a metallic atom and a nonmetallic atom during ion formation, which of the following is correct? A) The metallic atom gains electrons from the nonmetallic atom. B) The nonmetallic atom gains electrons from the metallic atom. C) Both atoms gain electrons. D) Neither atom gains electrons. Show Answer Correct Answer: B) The nonmetallic atom gains electrons from the metallic atom. 23. H-O-H bond angle is H2O is 104.5$^\circ$ and not 109$^\circ$28 because of A) Lone pair-lone pair repulsion. B) Lone pair-bond pair repulsion. C) Bond pair-bond pair repulsion. D) High electronegativity of oxygen. Show Answer Correct Answer: A) Lone pair-lone pair repulsion. 24. Why are the electrons in a metallic solid described as delocalized? A) They are fixed in place within the metal lattice. B) They are free to move throughout the entire solid. C) They are bound to individual atoms. D) They are shared between two specific atoms. Show Answer Correct Answer: B) They are free to move throughout the entire solid. 25. What is the primary reason for the formation of a covalent bond? A) Repulsion between electrons. B) Attraction between ions. C) Sharing of electrons. D) Transfer of electrons. Show Answer Correct Answer: C) Sharing of electrons. ← 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 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