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Chemical Bonding and Molecular Structure

Previous year questions with solutions · 2019 – 2026

5Questions
4Papers covered
8.82%Weightage 2026▲ 182.4% vs last year
’24
’25
’26
Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
2026321.58.82% ▲ 182.4% vs last year
2025120.53.12% ▲ 6.2% vs last year
2024120.52.94%

5 questions · newest paper first

Ques. 1JEE Advanced 2026 (Paper-1)

The correct order of dipole moments for the given species is

  1. BF3 = NH4+ < NF3 < NH3
  2. BF3 < NH4+ < NF3 < NH3
  3. NH4+ < BF3 < NH3 < NF3
  4. BF3 < NH4+ < NH3 < NF3
Ques. 2JEE Advanced 2026 (Paper-1)

Consider the following species: SOCl2, XeOF4, ClF3, ClF5, XeF5+, SO32-, XeF3+, SF4 List-I contains different molecular shapes and List-II contains total number of species with the same molecular shapes from the given species. Match each entry in List-I with the appropriate entry in List-II and choose the correct option.

  1. P → 1; Q → 2; R → 5; S → 3
  2. P → 5; Q → 4; R → 2; S → 3
  3. P → 3; Q → 2; R → 1; S → 4
  4. P → 1; Q → 3; R → 5; S → 4
Ques. 3JEE Advanced 2026 (Paper-2)

The correct order of ONO bond angle in the given species is

  1. NO2+<NO2<NO3-<NO2-
  2. NO2-<NO3-<NO2<NO2+
  3. NO3-<NO2-<NO2<NO2+
  4. NO2-<NO3-<NO2+<NO2
Ques. 4JEE Advanced 2025 (Paper-1)

Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)

  1. Bond order of Ne2 is zero.
  2. The highest occupied molecular orbital (HOMO) of F2 is σ-type.
  3. Bond energy of O2+ is smaller than the bond energy of O2.
  4. Bond length of Li2 is larger than the bond length of B2.
Ques. 5JEE Advanced 2024 (Paper-1)

The option(s) in which at least three molecules follow Octet Rule is(are)

  1. CO2, C2H4, NO and HCl
  2. NO2, O3, HCl and H2SO4
  3. BCl3, NO, NO2 and H2SO4
  4. CO2, BCl3, O3 and C2H4