Chemical Bonding PYQs Set 2 (PDF)

Set 2 of 19 · Questions 31-60 of 568

In the print window choose “Save as PDF”. The file prints without a web address or date line.

Mere Teacher · Previous Year Questions JEE Main Chemistry · Chemical Bonding · Set 2 (Q31-60)
Scan or visit mereteacher.com for free PYQ practice, timed CBT tests, step-by-step solutions and BroBot AI. Answers and solutions are free with a sign-up.
31. $In which of the following hydrogen bonding is strongest?$ (1) $O - H \dots N$ (2) $O - H \dots \cdot O$ (3) $O - H \dots F$ (4) $F - H \dots \dots F$ 32. $A metal, M forms chlorides in + 2 and + 4 oxidation states. Which of the following statements about these chlorides is correct ?$ (1) $MCl2 is more volatile than MCl4$ (2) $MCl2 is more soluble in anhydrous ethanol than MCl4$ (3) $MCl2 is more ionic than MCl4$ (4) $MCl2 is more easily hydrolysed than MCl4$ 33. $Which of the following species exhibits the diamagnetic behaviour?$ (1) $O_{2}^{2 -}$ (2) $O_{2}^{+}$ (3) $O_{2}$ (4) $NO$ 34. $Among the following mixtures, dipole-dipole as the major interaction, is present in?$ (1) $Benzene and carbon tetrachloride$ (2) $Benzene and ethanol$ (3) $Acetonitrile and acetone$ (4) $KCl and water$ 35. $Which amongst the following is incorrect statement?$ (1) $O_{2}^{+} ion is diamagnetic$ (2) $The bond orders of O2+,O2,O2-and O_{2}^{2 -} are 2.5, 2, 1.5 and 1 , respectively$ (3) $C_{2} molecule has four electrons in its two degenerate π molecular orbitals$ (4) $H_{2}^{+} ion has one electron$ 36. $The total number of acidic oxides from the following list is: NO, N_{2} O, B_{2} O_{3}, N_{2} O_{5}, CO, S O_{3}, P_{4} O_{10}$ (1) $3$ (2) $4$ (3) $5$ (4) $6$ 37. $Among the following the maximum covalent character is shown by the compound$ (1) $F e C l_{2}$ (2) $S n C l_{2}$ (3) $A l C l_{3}$ (4) $M g C l_{2}$ 38. $The relative strength of interionic/intermolecular forces n decreasing order is:$ (1) $Dipole - Dipole > Ion - Ion > Dipole - Ion$ (2) $Ion - Ion > Dipole - Dipole > Dipole - Ion$ (3) $Dipole - Ion > Dipole - Dipole > Ion - Ion$ (4) $Ion - Ion > Dipole - Ion > Dipole - Dipole$ 39. $Predict the correct order among the following :$ (1) $bond pair‐bond pair > lone pair‐bond pair > lone pair‐lone pair$ (2) $lone pair‐bond pair > bond pair‐bond pair > lone pair‐lone pair$ (3) $lone pair‐lone pair > lone pair‐bond pair > bond pair‐bond pair$ (4) $lone pair‐lone pair > bond pair‐bond pair > lone pair‐bond pair$ 40. $The molecule having smallest bond angle is :$ (1) $NCl3$ (2) $AsCl3$ (3) $SbCl3$ (4) $PCl3$ 41. $Which one has the highest boiling point ?$ (1) $He$ (2) $Ne$ (3) $Kr$ (4) $Xe$ 42. $Match List - I with List - II according to shape. List-I (A) XeO_{3} (B) XeF_{2} (C) XeO_{2} F_{2} (D) XeOF_{4} List-II (I) BrF_{5} (II) NH_{3} (III) (I_{3})^{-} (IV) SF_{4} Choose the correct answer from the options given below :$ (1) $A-II, B-III, C-I, D-IV$ (2) $A-II, B-I, C-III, D-IV$ (3) $A-II, B-III, C-IV, D-I$ (4) $A-III, B-II, C-IV, D-I$ 43. $The percentage of p-character in the orbitals forming P - P bonds in P_{4} is :$ (1) $25$ (2) $33$ (3) $50$ (4) $75$ 44. $Which intermolecular force is most responsible in allowing xenon gas to liquefy?$ (1) $Instantaneous dipole-induced dipole$ (2) $Ionic$ (3) $Ion-dipole$ (4) $Dipole-dipole$ 45. $Choose the correct option from the following$ (1) $KF is more covalent than KI$ (2) $SnCl_{4} is less covalent than SnCl_{2}$ (3) $LiF is more covalent than KF$ (4) $ZnCl_{2} is less covalent than NaCl$ 46. $Which one of these is not true for benzene?$ (1) $It forms only one type of monosubstituted product.$ (2) $There are three carbon-carbon single bonds and three carbon-carbon double bonds.$ (3) $The heat of hydrogenation of benzene is less than the theoretical value.$ (4) $The bond angle between the carbon carbon bonds is 120^{\circ} .$ 47. $Which of the following statements is incorrect?$ (1) $Bond length of O_{2} > Bond length of O_{2}^{2 +}$ (2) $Bond order of O_{2}^{+} < Bond order of O_{2}^{2 -}$ (3) $Bond length of O_{2} < Bond length of O_{2}^{2 -}$ (4) $Bond order of O_{2} > Bond order of O_{2}^{2 -}$ 48. $Identify the molecule (X) with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among HNO_{3}, H_{2} SO_{4}, NF_{3} and O_{3} . Choose the correct bond angle made by the central atom of the molecule (X) .$ (1) $116^{\circ}$ (2) $102^{\circ}$ (3) $107^{\circ}$ (4) $120^{\circ}$ 49. $Which of the following sets is correct? Mole- cule Hybridi- zation Geometry Number of lone pairs of electrons on central atom I SiH_{4} sp^{3} tetrahedral 0 II BeCl_{2} sp^{2} linear 1 III SF_{4} dsp^{3} square planar 1 IV SnCl_{2} sp linear 0$ (1) $I$ (2) $II$ (3) $III$ (4) $IV$ 50. $Among the following which compound will show the highest lattice energy?$ (1) $KF$ (2) $N a F$ (3) $C s F$ (4) $R b F$ 51. $Which of the following molecules/ions does not contain unpaired electrons?$ (1) $O_{2}^{2 -}$ (2) $B_{2}$ (3) $N_{2}^{+}$ (4) $O_{2}$ 52. $Which of the following is the correct order of dipole moment ?$ (1) $N H_{3} < B F_{3} < N F_{3} < H_{2} O$ (2) $B F_{3} < N F_{3} < N H_{3} < H_{2} O$ (3) $B F_{3} < N H_{3} < N F_{3} < H_{2} O$ (4) $H_{2} O < N F_{3} < N H_{3} < B F_{3}$ 53. $The number of antibonding electrons present in O_{2}^{-} molecular ion is$ (1) $8$ (2) $6$ (3) $5$ (4) $7$ 54. $Identify the pair of species with same geometries$ (1) $XeF_{4}, PCl_{4}^{+}$ (2) $NH_{3}, ClF_{3}$ (3) $SF_{4}, NH_{4}^{+}$ (4) $XeF_{2}, I_{3}^{-}$ 55. $The correct pair of species which are not isostructural is$ (1) $PF_{6}^{-} and SF_{6}$ (2) $IO_{3}^{-} and XeO_{3}$ (3) $BH_{4}^{-} and NH_{4}^{+}$ (4) $BrF_{5} and XeF_{4}$ 56. $The combination of which of the following gives an ionic compound with maximum covalent character.$ (1) $M g^{2 +} and C l^{-}$ (2) $M g^{2 +} and O^{2 -}$ (3) $N a^{+} and B r^{-}$ (4) $N a^{+} and O^{2 -}$ 57. $Statement I :- Dipole moment is a vector quantity and by convention it is depicted by a small arrow with tail on the negative centre and head pointing towards the positive centre. Statement II :- The crossed arrow of the dipole moment symbolizes the direction of the shift of charges in the molecules. In the light of the above statements, choose the most appropriate answer from the options given below:$ (1) $Both Statement I and Statement II are correct.$ (2) $Statement I is incorrect but Statement II is correct.$ (3) $Both Statement I and Statement II are incorrect.$ (4) $Statement I is correct but Statement II is incorrect.$ 58. $Increasing order of carbon-carbon bond length for the following is C_{2} H_{4} C_{2} H_{2} C_{6} H_{6} C_{2} H_{6} (A) (B) (C) (D)$ (1) $B < C < A < D$ (2) $C < B < A < D$ (3) $B < A < C < D$ (4) $D < C < A < B$ 59. $Sum of bond order of CO and NO^{+} is$ 60. $Number of compounds / species from the following with non-zero dipole moment is_______BeCl_{2}, BCl_{3}, NF_{3}, XeF_{4}, CCl_{4}, H_{2} O, H_{2} S, HBr, CO_{2}, H_{2}, HCl$