Chemical Bonding PYQs Set 17 (PDF)

Set 17 of 19 · Questions 481-510 of 568

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Chemical Bonding · Set 17 (Q481-510)
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481. $In X - H - - - Y, X and Y both are electronegative elements. Then$ (1) $electron density on X will increase and on H will decrease$ (2) $in both electron density will increase$ (3) $in both electron density will decrease$ (4) $on X electron density will decrease and on H increases.$ 482. $Correct or der of increasing C—O bond length of CO, C O_{3}^{2 -}, CO2 is :$ (1) $C O_{3}^{2 -} < CO2 < CO$ (2) $CO2 < C O_{3}^{2 -} < CO$ (3) $CO < C O_{3}^{2 -} < CO2$ (4) $CO < CO2 < C O_{3}^{2 -}$ 483. $The bond order and the magnetic characteristics of C N^{-} are :$ (1) $2 \frac{1}{2}, diamagnetic$ (2) $3, paramagnetic$ (3) $3, diamagnetic$ (4) $2 \frac{1}{2}, paramagnetic$ 484. $Which of the following possess net dipole moment?$ (1) $SO_{2}$ (2) $BF_{3}$ (3) $BeCl_{2}$ (4) $CO_{2}$ 485. $The intermolecular interaction that is dependent on the inverse cube of distance between the molecules is:$ (1) $ion-ion interaction$ (2) $ion-dipole interaction$ (3) $London force$ (4) $hydrogen bond$ 486. $The correct statement with regard to H_{2}^{+} and H_{2}^{-} is$ (1) $both H_{2}^{+} and H_{2}^{-} do not exist$ (2) $H_{2}^{-} is more stable than H_{2}^{+}$ (3) $H_{2}^{+} is more stable than H_{2}^{-}$ (4) $both H_{2}^{+} and H_{2}^{-} are equally stable.$ 487. $The hydride that is NOT electron different is:$ (1) $G a H_{3}$ (2) $S i H_{4}$ (3) $A l H_{3}$ (4) $B_{2} H_{6}$ 488. $The intramolecular hydrogen bond is present in$ (1) $phenol$ (2) $o-nitrophenol$ (3) $p-nitrophenol$ (4) $p -cresol.$ 489. $Arrange the following in the increasing order of their bond order O_{2}, O_{2}^{+}, O_{2}^{-} and O_{2}^{2 -}$ (1) $O_{2}^{2 -}, O_{2}^{-}, O_{2}^{+}, O_{2}$ (2) $O_{2}^{+}, O_{2}, O_{2}^{-}, O_{2}^{2 -}$ (3) $O_{2}, O_{2}^{+}, O_{2}^{- ’}, O_{2}^{2 -}$ (4) $O_{2}^{2 -}, O_{2}^{-}, O_{2}, O_{2}^{+}$ 490. $Which of the following species contains three bond pairs and one lone pair around the central atom ?$ (1) $H2O$ (2) $BF3$ (3) $NH2-$ (4) $PCl3$ 491. $The bond angle H-X-H is the greatest in the compound:$ (1) $N H_{3}$ (2) $P H_{3}$ (3) $C H_{4}$ (4) $H_{2} O$ 492. $Which one of the following molecules is paramagnetic?$ (1) $N_{2}$ (2) $NO$ (3) $CO$ (4) $O_{3}$ 493. $In formation of N O^{+} from NO, the electron is removed from$ (1) $a σ-orbital$ (2) $a π-orbital$ (3) $a σ-orbital$ (4) $a π-orbital$ 494. $The potential energy curve for the H_{2}, molecule as a function of inter-nuclear distance is$ (1) (2) (3) (4) 495. $The state of hybrid orbitals of carbon in CO_{2}, CH_{4} and CO_{3}^{2 -} respectively is$ (1) $s p^{3}, s p^{2} and sp$ (2) $sp, s p^{3} and s p^{2}$ (3) $s p^{3}, sp and s p^{2}$ (4) $s p^{2}, s p^{3} and sp.$ 496. $In the structure of S F_{4}, the lone pair of electrons on S is in.$ (1) $equatorial position and there are two lone pairbond pair repulsions at 90°$ (2) $equatorial position and there are three lone pair-bond pair repulsions at 90°$ (3) $axial position and there are three lone pair -bond pair repulsion at 90°.$ (4) $axial position and there are two lone pair -bond pair repulsion at 90°.$ 497. $In X e O_{3} F_{2}, the number of bond pair(s), π-bond(s) and lone pair(s) on Xe atom respectively are:$ (1) $5, 2, 0$ (2) $4, 2, 2$ (3) $5, 3, 0$ (4) $4, 4, 0$ 498. $Which of the following conversions involves change in both shape and hybridization?$ (1) $H_{2} O \to H_{3} O^{+}$ (2) $B F_{3} \to B F_{4}^{-}$ (3) $C H_{4} \to C_{2} H_{6}$ (4) $N H_{3} \to N H_{4}^{+}$ 499. $The number of lone pairs on Xe in X e F_{2}, X e F_{4} and X e F_{6} respectively are :$ (1) $3, 2, 1$ (2) $2, 4, 6$ (3) $1, 2, 3$ (4) $6, 4, 2$ 500. $Which of the following pairs contains 2 lone pairs of electrons on the central atom?$ (1) $I_{3}^{+}, H_{2} O$ (2) $XeF_{4}, NH_{3}$ (3) $H_{2} O, NF_{3}$ (4) $SO_{4}^{2 -}, H_{2} S$ 501. $Which of the following molecule has the maximum dipole moment?$ (1) $NH_{3}$ (2) $CS_{2}$ (3) $C_{2} H_{6}$ (4) $NCl_{3}$ 502. $The incorrect geometry is represented by:$ (1) $N F_{3} - trigonal planar$ (2) $B F_{3} - trigonal planar$ (3) $A s F_{5} - trigonal bipyramidal$ (4) $H_{2} O - bent$ 503. $Which one of the following molecules contains no π bond ?$ (1) $H2O$ (2) $SO2$ (3) $NO2$ (4) $CO2$ 504. $A central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of thismolecule is:$ (1) $see-saw$ (2) $planar triangular$ (3) $T-shaped$ (4) $trigonal pyramidal$ 505. $Which of the following has maximum number of lone pairs associated with Xe ?$ (1) $XeF4$ (2) $XeF6$ (3) $XeF2$ (4) $XeO3$ 506. $In SO_{2}, NO_{2}^{-} and N_{3}^{-}, the hybridizations at the central atom are re sp ectively:$ (1) $sp^{2}, sp^{2} and sp^{2}$ (2) $sp, sp^{2} and sp$ (3) $s p^{2}, sp and sp$ (4) $sp^{2}, sp^{2} and sp$ 507. $Match List I with List II List - I (Molecule/Species) A. SO_{2} Cl_{2} B. NO C. NO_{2}^{-} D. I_{3}^{-} List - II (Property/Shape) I. Paramagnetic II. Diamagnetic III. Tetrahedral IV. Linear Choose the correct answer from the options given below:$ (1) $A-II, B-III, C-I, D-IV$ (2) $A-III, B-I, C-II, D-IV$ (3) $A-IV, B-I, C-III, D-II$ (4) $A-III, B-IV, C-II, D-I$ 508. $Match List I with List II List - I (Compound/Species) A. SF_{4} B. BrF_{3} C. BrO_{3}^{-} D. NH_{4}^{++} KS List - II (Shape/Geometry) I. Tetrahedral II. Pyramidal III. See saw IV. Bent T-Shape Choose the correct answer from the options given below:$ (1) $A-II, B-III, C-I, D-IV$ (2) $A-II, B-IV, C-III, D-I$ (3) $A-III, B-IV, C-II, D-I$ (4) $A-III, B-II, C-IV, D-I$ 509. $Consider, P F_{5}, B r F_{5}, P C 1_{3}, S F_{6}, [I C 1_{4}]^{-} C 1 F_{3} and I F_{5} .Amongst the above molecule(s)/ion(s), the number of molecule(s)/ion(s) having s p^{3} d^{2} hybridisation is __________ .$ 510. $Number of molecules from the following which can exhibit hydrogen bonding is_____(nearest integer)$