Chemical Bonding: JEE Main Chemistry Previous Year Questions

568 previous year questions from Chemical Bonding. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. $The calculated bond order of superoxide ion (O_{2}^{-})$
2. $The correct order of increasing bond angles in the following triatomic species is$
3. $A diatomic molecule has a dipole moment of 1.2D. If the bond distance is , then fractional charge on each atom is_______ esu .…$
4. $Match List-I with List-II (matching question)$
5. $When ψ_{A} and ψ_{B} are the wave functions of atomic orbitals, then σ^{*} is represented by :$
6. $Which one of the following compounds shows the presence of intramolecular hydrogen bond?$
7. $Which of the following has the highest bond order?$
8. $Molecular AB has a bond length of 1.61 A and a dipole moment of 0.38 D. The fractional charge on each atom (absolute magnitude) is: ( = 4.802 × esu)$
9. $Arrange the following compounds in increasing order of their dipole moment : HBr, H_{2} S, NF_{3} and CHCl_{3}$
10. $Stability of the species Li2, L i_{2}^{-} and L i_{2}^{+} increases in the order of :$
11. $Amongst B e F_{2}, B F_{3}, H_{2} O, N H_{3}, C C 1_{4} and HC1, the number of molecules with non-zero net dipole moment is__________.$
12. $The total number of species from the following in which one unpaired electron is present, is _____\dots$
13. $The total number of molecules with zero dipole moment among\dots$
14. $In which of the following molecules, the central atom does not have sp3 hybridization?$
15. $Which one of the following species does not exist under normal conditions ?$
16. $Which statements are NOT TRUE about XeO2 F2 ?(A) It has a see-saw shape.(B) Xe has 5 electron pairs in its valence shell in XeO2 F2.(C) The O - Xe - O bond angle is\dots$
17. $The bond stability of N_{2}, N_{2}^{-} and N_{2}^{2 -} varies as$
18. $Which of the following molecule(s) show/s paramagnetic behavior? (A) O_{2} (B) N_{2} (C) F_{2} (D) S_{2} (E) Cl_{2} Choose the correct answe\dots$
19. $Find out the correct hybridisation of the central atom in BCl_{3}, PCl_{5}, NH_{3} and SF_{6} .$
20. $The number of s p^{2} hybrid orbitals in a molecule of benzene is:$
21. $Using molecular orbital theory predict which of the following species has the shortest bond length ?$
22. $When O_{2} is converted into O_{2}^{+}$
23. $The bond lengths of C_{2}, N_{2} and B_{2} molecules are X_{1}, X_{2} and X_{3} pm respectively. The correct order of the\dots$
24. $In oxygen and carbon molecule the bonding is$
25. $The total number of molecular orbitals formed from 2 s and 2 p atomic orbitals of a diatomic molecule$

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Chemical Bonding: JEE Main Chemistry Previous Year Questions

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