Chemical Bonding PYQs Set 2 (PDF)

Set 2 of 17 · Questions 31-60 of 508

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Mere Teacher · Previous Year Questions NEET Chemistry · Chemical Bonding · Set 2 (Q31-60)
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31. $Among the following the maximum covalent character is shown by the compound$ (1) $F e C l_{2}$ (2) $S n C l_{2}$ (3) $A l C l_{3}$ (4) $M g C l_{2}$ 32. $The relative strength of interionic/intermolecular forces n decreasing order is:$ (1) $Dipole - Dipole > Ion - Ion > Dipole - Ion$ (2) $Ion - Ion > Dipole - Dipole > Dipole - Ion$ (3) $Dipole - Ion > Dipole - Dipole > Ion - Ion$ (4) $Ion - Ion > Dipole - Ion > Dipole - Dipole$ 33. $Predict the correct order among the following :$ (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) $lone pair‐lone pair > bond pair‐bond pair > lone pair‐bond pair$ 34. $The molecule having smallest bond angle is :$ (1) $NCl3$ (2) $AsCl3$ (3) $SbCl3$ (4) $PCl3$ 35. $Which one has the highest boiling point ?$ (1) $He$ (2) $Ne$ (3) $Kr$ (4) $Xe$ 36. $Match List - I with List - II according to shape. List-I (A) XeO_{3} (B) XeF_{2} (C) XeO_{2} F_{2} (D) XeOF_{4} List-II (I) BrF_{5} (II) NH_{3} (III) (I_{3})^{-} (IV) SF_{4} Choose the correct answer from the options given below :$ (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) $A-III, B-II, C-IV, D-I$ 37. $The percentage of p-character in the orbitals forming P - P bonds in P_{4} is :$ (1) $25$ (2) $33$ (3) $50$ (4) $75$ 38. $Which intermolecular force is most responsible in allowing xenon gas to liquefy?$ (1) $Instantaneous dipole-induced dipole$ (2) $Ionic$ (3) $Ion-dipole$ (4) $Dipole-dipole$ 39. $Choose the correct option from the following$ (1) $KF is more covalent than KI$ (2) $SnCl_{4} is less covalent than SnCl_{2}$ (3) $LiF is more covalent than KF$ (4) $ZnCl_{2} is less covalent than NaCl$ 40. $Which one of these is not true for benzene?$ (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) $The bond angle between the carbon carbon bonds is 120^{\circ} .$ 41. $Which of the following statements is incorrect?$ (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) $Bond order of O_{2} > Bond order of O_{2}^{2 -}$ 42. $Identify the molecule (X) with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among HNO_{3}, H_{2} SO_{4}, NF_{3} and O_{3} . Choose the correct bond angle made by the central atom of the molecule (X) .$ (1) $116^{\circ}$ (2) $102^{\circ}$ (3) $107^{\circ}$ (4) $120^{\circ}$ 43. $Which of the following sets is correct? Mole- cule Hybridi- zation Geometry Number of lone pairs of electrons on central atom I SiH_{4} sp^{3} tetrahedral 0 II BeCl_{2} sp^{2} linear 1 III SF_{4} dsp^{3} square planar 1 IV SnCl_{2} sp linear 0$ (1) $I$ (2) $II$ (3) $III$ (4) $IV$ 44. $Among the following which compound will show the highest lattice energy?$ (1) $KF$ (2) $N a F$ (3) $C s F$ (4) $R b F$ 45. $Which of the following molecules/ions does not contain unpaired electrons?$ (1) $O_{2}^{2 -}$ (2) $B_{2}$ (3) $N_{2}^{+}$ (4) $O_{2}$ 46. $Which of the following is the correct order of dipole moment ?$ (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) $H_{2} O < N F_{3} < N H_{3} < B F_{3}$ 47. $The number of antibonding electrons present in O_{2}^{-} molecular ion is$ (1) $8$ (2) $6$ (3) $5$ (4) $7$ 48. $Identify the pair of species with same geometries$ (1) $XeF_{4}, PCl_{4}^{+}$ (2) $NH_{3}, ClF_{3}$ (3) $SF_{4}, NH_{4}^{+}$ (4) $XeF_{2}, I_{3}^{-}$ 49. $The correct pair of species which are not isostructural is$ (1) $PF_{6}^{-} and SF_{6}$ (2) $IO_{3}^{-} and XeO_{3}$ (3) $BH_{4}^{-} and NH_{4}^{+}$ (4) $BrF_{5} and XeF_{4}$ 50. $The combination of which of the following gives an ionic compound with maximum covalent character.$ (1) $M g^{2 +} and C l^{-}$ (2) $M g^{2 +} and O^{2 -}$ (3) $N a^{+} and B r^{-}$ (4) $N a^{+} and O^{2 -}$ 51. $Statement I :- Dipole moment is a vector quantity and by convention it is depicted by a small arrow with tail on the negative centre and head pointing towards the positive centre. Statement II :- The crossed arrow of the dipole moment symbolizes the direction of the shift of charges in the molecules. In the light of the above statements, choose the most appropriate answer from the options given below:$ (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) $Statement I is correct but Statement II is incorrect.$ 52. $Increasing order of carbon-carbon bond length for the following is C_{2} H_{4} C_{2} H_{2} C_{6} H_{6} C_{2} H_{6} (A) (B) (C) (D)$ (1) $B < C < A < D$ (2) $C < B < A < D$ (3) $B < A < C < D$ (4) $D < C < A < B$ 53. $Which one of the following pairs of species has the same bond order?$ (1) $C N^{-} and C N^{+}$ (2) $O_{2}^{-} and C N^{-}$ (3) $N O^{+} and C N^{+}$ (4) $C N^{-} and N O^{+}$ 54. $Choose the incorrect formula out of the four compounds for an element X below:$ (1) $X_{2} O_{3}$ (2) $X_{2} C l_{3}$ (3) $X_{2} (S O_{4})_{3}$ (4) $X P O_{4}$ 55. $Which one of the following is an amphoteric oxide?$ (1) $ZnO$ (2) $N a_{2} O$ (3) $S O_{2}$ (4) $B_{2} O_{3}$ 56. $Which of the following sets of species have similar bond order?$ (1) $N_{2}, O_{2}^{2 -}, NO^{+}$ (2) $N_{2}, F_{2}, O_{2}^{2 -}$ (3) $N_{2}, N_{2}^{2 -}, O_{2}^{-}$ (4) $N_{2}, CO, NO^{+}$ 57. $During the change of O_{2} to O_{2}^{-}, the incoming electron goes to the orbital:$ (1) $π 2 p_{y}$ (2) $σ^{} 2 p_{z}$ (3) $π^{} 2 p_{x}$ (4) $π 2 p_{x}$ 58. $Arrange the molecules B_{2}, He_{2}, N_{2} and C_{2} in the increasing order of their bond order values$ (1) $C_{2} < He_{2} < B_{2} < N_{2}$ (2) $N_{2} < B_{2} < C_{2} < He_{2}$ (3) $He_{2} < B_{2} < C_{2} < N_{2}$ (4) $He_{2} < C_{2} < N_{2} < B_{2}$ 59. $According to MO theory, the molecule which contains only π -bonds between the atoms is$ (1) $C_{2}$ (2) $N_{2}$ (3) $O_{2}$ (4) $B_{2}$ 60. $The species in which the N atom is in a state of sp hybridization is:$ (1) $N O_{2}^{-}$ (2) $N O_{3}^{-}$ (3) $N O_{2}$ (4) $N O_{2}^{+}$