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Chemistry - Chemical Bonding and Molecular Structure

Practise 50 WBJEE previous year questions on Chemical Bonding and Molecular Structure, compiled from papers spanning 2009 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty WBJEE tests.

Chemical Bonding and Molecular Structure has been asked in 17 of the 18 years of WBJEE papers analysed (2009–2026), with 50 questions in all. 56% of them were easy, 40% moderate and 4% tough. Most of its questions came from 2013, with 5 questions that year. In the last three years (2024–2026) it had 7 questions across 3 papers, about 2.3 per paper.

The chapter's 7 topics are not weighted equally: Hybridisation and VSEPR Theory (23 questions, 46%), Molecular Orbital Theory (14 questions, 28%), and Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding (6 questions, 12%) have been asked the most. Hybridisation and VSEPR Theory has also led over the last five years, with 7 questions. Hybridisation and VSEPR Theory has produced the most tough questions (1).

  1. 1Peroxide ion is2026Molecular Orbital Theory
  2. 2In which of the following species, hybridisation is not associated?2026Hybridisation and VSEPR Theory
  3. 3Among and , the species having the linear structures are2026Hybridisation and VSEPR Theory
  4. 4The bond order of is2025Molecular Orbital Theory
  5. 5Which of the following hydrogen bonds is likely to be the weakest?2025Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  6. 6Which of the following oxides is paramagnetic?2025Molecular Orbital Theory
  7. 7Which of the following contains maximum number of lone pairs on the central atom?2024Hybridisation and VSEPR Theory
  8. 8The correct order of boiling points of N-ethylethanamine (I), ethoxyethane (II) and butan-2-ol (III) is2023Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  9. 9The molecular shapes of \( {SF}_4, {CF}_4\) and \( {XeF}_4\) are2023Hybridisation and VSEPR Theory
  10. 10The species in which nitrogen atom is in a state of sp hybridisation is2023Hybridisation and VSEPR Theory
  11. 11The correct order of \( {C}= {O}\) bond length in ethyl propanoate (I), ethyl propenoate (II) and ethenyl propanoate (III) is2023Molecular Orbital Theory
  12. 12Identify the non-linear molecule-pair from the above mentioned molecules.2022Hybridisation and VSEPR Theory
  13. 13The correct bond order of bond in molecule is2022Molecular Orbital Theory
  14. 14The boiling point of the water is higher than liquid . The reason is that2022Properties of ionic compounds
  15. 15Hybridisation of the negative carbons in (1) and (2) are2022Hybridisation and VSEPR Theory
  16. 16The ion has the following shape2021Hybridisation and VSEPR Theory
  17. 17Which structure has delocalised -electrons?2021Covalent and Co-ordinate Bonding
  18. 18The maximum number of atoms that can be in one plane in the molecule p-nitrobenzonitrile are2021Hybridisation and VSEPR Theory
  19. 19Bond order of and are respectively:2020Molecular Orbital Theory
  20. 20A homonuclear diatomic gas molecule shows 2-electron magnetic moment. The one-electron and two-electron reduced species obtained from above 2020Molecular Orbital Theory
  21. 21The H angle in ammonia is while the angle in phosphine is Relative to phosphine, the -character of the lone-pair on ammonia is expected to b2019Hybridisation and VSEPR Theory
  22. 22Which of the following has the strongest H-bond?2018Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  23. 23Which statements are correct for the peroxide ion?2018Molecular Orbital Theory
  24. 24The boiling points of and follow the order2016Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  25. 25Of the following molecules, which have shape similar to2016Hybridisation and VSEPR Theory
  26. 26The number of lone pairs of electrons on the central atoms of an respectively, are2015Hybridisation and VSEPR Theory
  27. 27In the following compound, the number of sp-bybridised carbons are2015Hybridisation and VSEPR Theory
  28. 28The compound that will have a permanent dipole moment among the following is2014Dipole moment
  29. 29In case of heteronuclear diatomics of the type where is more electronegative than , bonding molecular orbital resembles the character of mor2014Molecular Orbital Theory
  30. 30The structure of is experimentally determined to be distorted octahedron. Its structure according to VSEPR theory is2014Hybridisation and VSEPR Theory
  31. 31In , the and bond angles are2013Hybridisation and VSEPR Theory
  32. 32In and , the bond lengths are 1.21 Ã… and 1.48 Ã… respectively. In ozone, the average bond length is2013Covalent and Co-ordinate Bonding
  33. 33The ground state electronic configuration of CO molecule is2013Molecular Orbital Theory
  34. 34The increasing order of bond angle in the species and is2013Hybridisation and VSEPR Theory
  35. 35For and the increasing order of ionic character is2013Polarization
  36. 36The paramagnetic behaviour of is due to the presence of2012Molecular Orbital Theory
  37. 37In 2 -butene, which one of the following statements is true?2012Covalent and Co-ordinate Bonding
  38. 38CO is practically non-polar since2012Molecular Orbital Theory
  39. 39The state of hybridization of the central atom and the number of lone pairs over the central atom in are2012Hybridisation and VSEPR Theory
  40. 40Which of the following compounds has maximum volatility?2011Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  41. 41In the following electron - dot structure, calculate the formal charge from left to right nitrogen atom; \( { {N}}= {N}= { {N}}\)2011Hybridisation and VSEPR Theory
  42. 42Which one of the following is paramagnetic?2011Molecular Orbital Theory
  43. 43The \( {sp}^3 {~d}^2\) hybridization of central atom of a molecule would lead to2011Hybridisation and VSEPR Theory
  44. 44Hybridization of \( {C}_2\) and \( {C}_3\) of \( {H}_3 {C}- {CH}= {C}= {CH}- {CH}_3\) are2011Hybridisation and VSEPR Theory
  45. 45is . The dipole moment of is2010Dipole moment
  46. 46What type of orbital hybridisation is considered on in ?2010Hybridisation and VSEPR Theory
  47. 47The bond order of molecule is2010Molecular Orbital Theory
  48. 48Which of the following compounds shows evidence of the strongest hydrogen bonding?2010Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  49. 49Hybridisation of central atom in is2009Hybridisation and VSEPR Theory
  50. 50In the compound the hybridization of and carbons are respectively:2009Hybridisation and VSEPR Theory

Frequently Asked Questions

1.How many questions are available for Chemical Bonding and Molecular Structure?

This chapter includes 50 questions compiled from WBJEE papers spanning 2009 to 2026.

2.Are these questions only from WBJEE, or from other exams too?

These are WBJEE questions specifically for the Chemical Bonding and Molecular Structure chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Chemical Bonding and Molecular Structure an important chapter for WBJEE Chemistry?

Chemical Bonding and Molecular Structure has appeared in 17 of the 18 years of WBJEE papers covered here, with 50 questions across 17 papers - about 3 per paper it appears in.

4.What is the difficulty level of Chemical Bonding and Molecular Structure questions in WBJEE?

Of the 50 questions analysed for this chapter, 56% are easy, 40% moderate and 4% tough. 2013 had the most, with 5 questions.

5.Which topics in Chemical Bonding and Molecular Structure should I focus on?

These topics have carried the most weightage in Chemical Bonding and Molecular Structure:

  • Hybridisation and VSEPR Theory - 23 questions (46%)
  • Molecular Orbital Theory - 14 questions (28%)
  • Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding - 6 questions (12%)
  • Hybridisation and VSEPR Theory has produced the most tough questions (1).
6.Is Chemical Bonding and Molecular Structure's weightage in WBJEE going up or down?

Across all 17 papers analysed, Chemical Bonding and Molecular Structure has averaged about 2.9 questions per paper. In the last three years (2024–2026), that average has fallen, at about 2.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.