Chemical Bonding PYQs Set 13 (PDF)

Set 13 of 17 · Questions 361-390 of 508

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Mere Teacher · Previous Year Questions NEET Chemistry · Chemical Bonding · Set 13 (Q361-390)
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361. $The interaction energy of London forces between two particles is proportional to r^{x}, where r is the distance between the particles. The value of x is :$ (1) $3$ (2) $-3$ (3) $-6$ (4) $6$ 362. $The complex ion [C o (N H_{3})_{6}]^{3 +} is formed by s p^{3} d^{2} hybridisation. Hence the ion should possess$ (1) $octahedral geometry$ (2) $tetrahedral geometry$ (3) $square planar geometry$ (4) $tetragonal geometry.$ 363. $Which of following bonds has maximum bond length?$ (1) $C - O$ (2) $C - H$ (3) $C - C$ (4) $C - N$ 364. $The compound that has the largest H-M-H bond angle (M = N, O, S, C) is$ (1) $H_{2} S$ (2) $C H_{4}$ (3) $N H_{3}$ (4) $H_{2} O$ 365. $Arrange the following in the decreasing order of their covalent character : (A) LiCl (B) NaCl (C) KC1 (D) CsCl Question: Choose the most appropriate answer from the options given below :$ (1) $(A)> (C) > (B)> (D)$ (2) $(B)>(A)>(C)>(D)$ (3) $(A) > (B) > (C) > (D)$ (4) $(A) > (B) > (D) > (C)$ 366. $Which one of the following arrangements of molecules is correct on the basis of their dipole moments ?$ (1) $B F_{3} > N F_{3} > N H_{3}$ (2) $N F_{3} > B F_{3} > N H_{3}$ (3) $N H_{3} > B F_{3} > N F_{3}$ (4) $N H_{3} > N F_{3} > B F_{3}$ 367. $Identify the incorrect statement for P C 1_{5} from the following.$ (1) $In this molecule, orbitals of phosphorous are assumed to undergo s p^{3} d hybridization.$ (2) $The geometry of P C 1_{5} is trigonal bipyramidal.$ (3) $P C 1_{5} has two axial bonds stronger than three equatorial bonds.$ (4) $The three equatorial bonds of P C 1_{5} lie in a plane.$ 368. $Given below are two statements: Statement (I): Experimentally determined oxygen-oxygen bond lengths in the O_{3} are found to be same and the bond length is greater than that of a O = O (double bond) but less than that of a single (O - O) bond. Statement (II) : The strong lone pair-lone pair repulsion between oxygen atoms is solely responsible for the fact that the bond length in ozone is smaller than that of a double bond (O = O) but more than that of a single bond (O - O) . choose the correct answer from the options given below :$ (1) $Both Statement I and Statement II are false$ (2) $Statement I is false but Statement II is true$ (3) $Statement I is true but Statement II is false$ (4) $Both Statement I and Statement II are true$ 369. $The maximum number of 90º angles between bond pair-bond pair of electrons is observed in :$ (1) $dsp3$ (2) $sp3d$ (3) $dsp2$ (4) $sp3d2$ 370. $Which of the following best describes the diagram below of a molecular orbital?$ (1) $A non-bonding orbital$ (2) $An antibonding π orbital$ (3) $A bonding σ orbital$ (4) $An antibonding σ orbital$ 371. $The bond order and magnetic behaviour of O_{2}^{-} ion are, respectively :$ (1) $1.5 and paramagnetic$ (2) $1.5 and diamagnetic$ (3) $2 and diamagnetic$ (4) $1 and paramagnetic$ 372. $The correct shape and I-I-I bond angles respectively in I_{3}^{-} ion are :$ (1) $Trigonal planar; 120°$ (2) $Distorted trigonal planar; 135° and 90°$ (3) $Linear; 180°$ (4) $T-shaped; 180° and 90°$ 373. $The geometry of X e O F_{4} by by VSEPR theory is :$ (1) $pentagonal planar$ (2) $octahedral$ (3) $square pyramidal$ (4) $trigonal bipyramidal$ 374. $Number of lone pair (s) of electrons on central atom and the shape of B r F_{3} molecule respectively, are :$ (1) $0, triangular planar$ (2) $1, pyramidal$ (3) $2, bent T-shape.$ (4) $1, bent T-shape$ 375. $In the given structure, number of sp and sp^{2} hybridized carbon atoms present respectively are:$ (1) $4 and 5$ (2) $3 and 5$ (3) $3 and 6$ (4) $4 and 6$ 376. $In which one of the following molecules the central atom can be said to adopt s p^{2} hybridization?$ (1) $B e F_{2}$ (2) $B F_{3}$ (3) $C_{2} H_{2}$ (4) $N H_{3}$ 377. $BF_{3} is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are:$ (1) $sp^{3} and 6$ (2) $sp^{2} and 6$ (3) $sp^{2} and 8$ (4) $sp^{3} and 4$ 378. $ln piperidine , the hybrid state assumed by N is$ (1) $sp$ (2) $sp2$ (3) $sp3$ (4) $dsp2$ 379. $The correct increasing order for bond angles among BF_{3}, PF_{3} and ClF_{3} is :$ (1) $BF_{3} < PF_{3} < ClF_{3}$ (2) $ClF_{3} < PF_{3} < BF_{3}$ (3) $PF_{3} < BF_{3} < ClF_{3}$ (4) $BF_{3} = PF_{3} < ClF_{3}$ 380. $In the structure of C l F_{3}, the number of lone pairs of electrons on cetral atom 'Cl' is :$ (1) $one$ (2) $Three$ (3) $four$ (4) $two$ 381. $Which of the following has maximum number of lone pairs associated with Xe ?$ (1) $X e F_{4}$ (2) $XeF$ (3) $X e F_{2}$ (4) $X e O_{3}$ 382. $What are the formal charges on terminal oxygens of ozone molecule?$ (1) $+ 1, - 1$ (2) $+ 1, + 1$ (3) $- 1, - 1$ (4) $0, - 1$ 383. $Which of the following pairs of ions is isoelectronic and isostructural ?$ (1) $C l O_{3}^{-}, I C l_{2}^{-}$ (2) $C O_{3}^{2-}, N O_{3}^{-}$ (3) $C l O_{3}^{-}, C O_{3}^{2-}$ (4) $S O_{3}^{2-}, C O_{3}^{2-}$ 384. $The number of bond pairs of electrons and total number of lone pairs of electrons in XeOF_{4} are respectively.$ (1) $6,10$ (2) $5,15$ (3) $5,10$ (4) $6,15$ 385. $Total number of sigma (σ) and pi (π) bonds respectively present in hex-1-en-4-yne are:$ (1) $3 and 13$ (2) $11 and 3$ (3) $13 and 3$ (4) $14 and 3$ 386. $The oxide which contains an odd electron at the nitrogen atom is$ (1) $N_{2} O$ (2) $N O_{2}$ (3) $N_{2} O_{3}$ (4) $N_{2} O_{5}$ 387. $Dipole‐induced dipole interactions are present in which of the following pairs$ (1) $HC1 and He atoms$ (2) $S i F_{4} and He atoms$ (3) $H_{2} O and alcohol$ (4) $C l_{2} and C C l_{4}$ 388. $In the structure of C l F_{3}, the number of lone pairs of electrons on central atom ‘Cl’ is$ (1) $one$ (2) $two$ (3) $four$ (4) $three$ 389. $Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, N O_{2}^{-}, N O_{3}^{-}, N H_{2}^{-}, N H_{4}^{+}, S C N^{-} ?$ (1) $N O_{2}^{-} and N O_{3}^{-}$ (2) $N H_{4}^{+} and N O_{3}^{-}$ (3) $S C N^{-} and N H_{2}^{-}$ (4) $N O_{2}^{-} and N H_{2}^{-}$ 390. $Strongest hydrogen bond is shown by$ (1) $water$ (2) $ammonia$ (3) $hydrogen fluoride$ (4) $hydrogen sulphide.$