Chemical Bonding PYQs Set 14 (PDF)

Set 14 of 17 · Questions 391-420 of 508

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Mere Teacher · Previous Year Questions NEET Chemistry · Chemical Bonding · Set 14 (Q391-420)
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391. $Correct order of bond angle is :$ (1) $S O_{2} < H_{2} S$ (2) $S O_{2} < H_{2} O$ (3) $N H_{3} < H_{2} O$ (4) $N H_{3} < S O_{2}$ 392. $Bond order is an inverse measure of$ (1) $bond length$ (2) $bond angle$ (3) $bond dissociation energy$ (4) $stability$ 393. $Which statement is NOT correct?$ (1) $A sigma bond is weaker than a pi bond.$ (2) $A sigma bond is stronger than a pi bond.$ (3) $A double bond is stronger than a single bond.$ (4) $A double bond is shorter than a single bond.$ 394. $The correct geometry and hybridization for X e F_{4} are$ (1) $octahedral, s p^{3} d^{2}$ (2) $trigonal bipyramidal, s p^{3} d$ (3) $planar triangle, s p^{3} d^{3}$ (4) $square planar, s p^{3} d^{2}$ 395. $Consider the species C H_{4}, N H_{4}^{+} and B H_{4}^{-} . Choose the correct option with respect to the three species:$ (1) $They are isoelectronic and only two have tetrahedral structures$ (2) $They are isoelectronic and all have tetrahedral structures$ (3) $Only two are isoelectronic and all have tetrahedral structures$ (4) $Only two are isoelectronic and only two have tetrahedral structures$ 396. $XeF2 is isostructural with :$ (1) $ΙCl2-$ (2) $SbCl3$ (3) $BaCl2$ (4) $TeF2$ 397. $Dimerisation of solute molecules in low dielectric constant solvent is due to$ (1) $hydrogen bond$ (2) $covalent bond$ (3) $co-ordinate bond$ (4) $ionic bond.$ 398. $The intermolecular interaction that is dependent on the inverse cube of distance between the molecules is:$ (1) $ion-ion interaction$ (2) $ion-dipole interaction$ (3) $London force$ (4) $dipole-dipole attraction$ 399. $The number of nodal planes present in σ^{*} s antibonding orbitals is$ (1) $0$ (2) $3$ (3) $1$ (4) $2$ 400. $Which have correct order of dipole moment :$ (1) $S O_{2} > H_{2} O$ (2) $N F_{3} > N H_{3}$ (3) $B F_{3} < N H_{3}$ (4) $S O_{2} < S O_{3}$ 401. $Four diatomic species are listed below in different sequences. Which of these presents the correct order of their increasing bond order ?$ (1) $O_{2}^{-} < NO < C_{2}^{2 -} < H e_{2}^{+}$ (2) $NO < C_{2}^{2 -} < O_{2}^{-} < H e_{2}^{+}$ (3) $C_{2}^{2 -} < H e_{2}^{+} < NO < O_{2}^{-}$ (4) $H e_{2}^{+} < O_{2}^{-} < NO < C_{2}^{2 -}$ 402. $Which of the following has unpaired electron(s)?$ (1) $N_{2}$ (2) $O_{2}^{-}$ (3) $N_{2}^{2 +}$ (4) $O_{2}^{2-}$ 403. $Hybridised states of carbon in graphite and diamond are respectively$ (1) $s p^{3}, s p^{3}$ (2) $s p^{2}, s p^{2}$ (3) $s p^{3}, s p^{2}$ (4) $s p^{2}, s p^{3}$ 404. $The correct statement for the molecule, C s I_{3}, is:$ (1) $it is a covalent molecule.$ (2) $it contains C s^{+} and I_{3}^{-}$ (3) $it contains C s^{3 +} and I¯ ions.$ (4) $it contains C s^{+}, I¯ and lattice I_{2} molecule.$ 405. $Amongst LiCl, RbCl, B e C l_{2} and M g C l_{2} the compounds with the greatest and the least ionic character respectively are:$ (1) $LiCl and RbCl$ (2) $RbCl and B e C l_{2}$ (3) $M g C l_{2} and B e C l_{2}$ (4) $RbCl and M g C l_{2}$ 406. $d^{2} s p^{3} hybridisation of the atomic orbitals gives$ (1) $square planar structure$ (2) $triangular structure$ (3) $tetrahedral structure$ (4) $octahedral structure.$ 407. $Among the following, the compound that contains ionic, covalent and coordinate linkage is$ (1) $NH_{4} Cl$ (2) $NaCl$ (3) $CaO$ (4) $NH_{3}$ 408. $Linear combination of two hybridized orbitals belonging to two atoms and each having one electron leads to the formation of$ (1) $sigma bond$ (2) $double bond$ (3) $co‐ordinate covalent bond$ (4) $pi bond.$ 409. $Which of the following is not a characteristic of a covalent compound?$ (1) $Low melting point$ (2) $No definite geometry$ (3) $Insoluble in polar solvent$ (4) $Small difference in electronegativity between the combining atoms.$ 410. $Which of the following represents the Lewis structure of N_{2} molecule?$ (1) (2) (3) (4) 411. $Which one of the following has no unpaired electrons?$ (1) $O_{2}$ (2) $O_{2}^{-}$ (3) $O_{2}^{+}$ (4) $O_{2}^{2 -}$ 412. $The dipole moments of C C l_{4}, C H C l_{3} and C H_{4} are in the order :$ (1) $C H_{4} < C C l_{4} < C H C l_{3}$ (2) $C C l_{4} < C H_{4} < C H C l_{3}$ (3) $C H C l_{3} < C H_{4} = C C l_{4}$ (4) $C H_{4} = C C l_{4} < C H C l_{3}$ 413. $Which of the following conversions involve change in both hybridization and shape ?$ (1) $C H_{4} ࢮ C_{2} H_{6}$ (2) $N H_{3} ࢮ NH_{4}^{+}$ (3) $B F_{3} ࢮ B F_{4}^{-}$ (4) $H2O ࢮ H_{3} O^{+}$ 414. $C l F_{2}^{-}, C l F_{4}^{-} find out number of lone pair and geometry.$ (1) $3 - Linear, 2 - Square planar$ (2) $3 - Square planar, 2 - Linear$ (3) $0 - Linear, 3 - Square planar$ (4) $2 - Linear, 2 - Square planar$ 415. $The shapes of SF4 and XeF2 respectively are :$ (1) $trigonal bipyramidal and trigonal bipyramidal$ (2) $see-saw and linear$ (3) $T-shape and linear$ (4) $square planar and trigonal bipyramidal$ 416. $The correct geometry and hybridization for XeF4 are -$ (1) $square planar, sp3d2$ (2) $Octahydral, sp3d2$ (3) $trigonal bipyramidal, sp3d$ (4) $planar triangle, sp3d3$ 417. $The number and type of bonds in C_{2}^{2 -} ion in CaC_{2} are:$ (1) $One σ -bond and one π -bond$ (2) $One σ -bond and two π -bonds$ (3) $Two σ -bonds and two π -bonds$ (4) $Two σ -bonds and one π -bonds$ 418. $The correct order of bond dissociation energy among N_{2}, O_{2}, O_{2}^{-} is shown in which of the following arrangements?$ (1) $N_{2} > O_{2}^{-} > O_{2}$ (2) $O_{2}^{-} > O_{2} > N_{2}$ (3) $N_{2} > O_{2} > O_{2}^{-}$ (4) $O_{2} > O_{2}^{-} > N_{2}$ 419. $Which of the following compounds contain no covalent bond ?$ (1) $KCl$ (2) $KCl, B_{2} H_{6}$ (3) $KCl, B_{2} H_{6}, P H_{3}$ (4) $KCl, H_{2} S O_{4}$ 420. $HCl gas is covalent and NaCl is an ionic compound. This is because$ (1) $sodium is highly electropositive$ (2) $hydrogen is a non-metal$ (3) $HCl is a gas$ (4) $electronegativity difference between H and Cl is less than 2.1.$