Chemical Bonding PYQs Set 17 (PDF)

Set 17 of 17 · Questions 481-508 of 508

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Mere Teacher · Previous Year Questions NEET Chemistry · Chemical Bonding · Set 17 (Q481-508)
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481. $Which of the following molecules has trigonal planar geometry?$ (1) $B F_{3}$ (2) $N H_{3}$ (3) $P C l_{3}$ (4) $I F_{3}$ 482. $The structure of diborane (B_{2} H_{6}) contains:$ (1) $four 2c-2e bonds and four 3c-2e bonds$ (2) $two 2c-2e bonds and two 3c-3e bonds$ (3) $two 2c-2e bonds and four 3c-2e bonds$ (4) $four 2c-2e bonds and two 3c-2e bonds$ 483. $The geometry with respect to the central atom of the molecules N (SiH_{3})_{3} \cdot Me_{3} N, (SiH_{3})_{3} P, respectively are$ (1) $planar, pyramidal, planar$ (2) $planar, pyramidal, pyramidal$ (3) $pyramidal, pyramidal, pyramidal$ (4) $pyramidal,planar, pyramidal$ 484. $Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Zero orbital overlap is an out of phase overlap. Reason : It results due to different orientation/ direction of approach of orbitals. In the light of the above statements. Choose the correct answer from the options given below$ (1) $Both A and R are true and R is the correct explanation of A$ (2) $Both A and R are true but R is NOT the correct explanation of A$ (3) $A is true but R is false$ (4) $A is false but R is true$ 485. $The set of molecules among the following with zero dipole moment is CCl_{4}, BF_{3}, CHCl_{3}, CS_{2}, NH_{3}, 1, 4-dichlorobenzene, CO_{2}$ (1) $CO_{2}, CS_{2}, BF_{3}, NH_{3}, CHCl_{3} only$ (2) $CCl_{4}, BF_{3}, CO_{2}, CS_{2}, 1, 4-dichlorobenzene only$ (3) $CO_{2}, CS_{2}, 1, 4-dichlorobenzene only$ (4) $CO_{2}, CS_{2} only$ 486. $The pair that contains two P-H bonds in each of the oxoacid is:$ (1) $H_{4} P_{2} O_{5} and H_{3} P O_{3}$ (2) $H_{4} P_{2} O_{5} and H_{4} P_{2} O_{6}$ (3) $H_{3} P O_{2} and H_{4} P_{2} O_{5}$ (4) $H_{3} P O_{3} and H_{3} P O_{2}$ 487. $The compounds with sp^{2} hybridized central atom among the following are(A) H_{2} CO_{3} (B) SiF_{4} (C) BF_{3} (D) HClO_{2}$ (1) $A and C only$ (2) $A and B only$ (3) $C and D only$ (4) $A, B, C and D$ 488. $Number of molecules/ions from the following in which the central atom is involved in s p^{3} hybridization is N O_{3}^{-}, BC l_{3}, Cl O_{2}^{-}, Cl O_{3}^{-}$ (1) $4$ (2) $3$ (3) $2$ (4) $1$ 489. $The types of hybridisation on the five carbon atoms from left to right in pent-1-en-4-yne are$ (1) $s p^{2}, s p^{2}, s p^{3}, sp, sp$ (2) $sp, sp, s p^{3}, s p^{2}, s p^{2}$ (3) $s p^{2}, s p^{3}, sp, sp, s p^{3}$ (4) $s p^{2}, sp, s p^{3}, sp, s p^{2}$ 490. $Match List I with List II List-I (Molecule) A. NH_{3} B. BrF_{5} C. PCl_{5} D. CH_{4} List-II (Shape) I. Square pyramid II. Tetrahedral III. Trigonal pyramidal IV. Trigonal bipyramidal Choose the correct answer from the options given below:$ (1) $A-II, B-IV, C-I, D-III$ (2) $A-III, B-I, C-IV, D-II$ (3) $A-IV, B-III, C-I, D-II$ (4) $A-III, B-IV, C-I, D-II$ 491. $Which one of the following species has plane triangular shape ?$ (1) $N_{3}^{-}$ (2) $N O_{3}^{-}$ (3) $NO2$ (4) $CO2$ 492. $Which of the following is the correct electron dot structure of N_{2} O molecule?$ (1) (2) (3) (4) 493. $The number of species from the following that have pyramidal geometry around the central atom is_____S_{2} O_{3}^{2 -}, SO_{4}^{2 -}, SO_{3}^{2 -}, S_{2} O_{7}^{2 -}$ (1) $4$ (2) $3$ (3) $2$ (4) $1$ 494. $Which of the following is the correct order of increasing number of lone pair of electrons on the central atom?$ (1) $IF_{5} < XeF_{2} < IF_{7} < ClF_{3}$ (2) $IF_{7} < ClF_{3} < XeF_{2} < IF_{5}$ (3) $IF_{7} < XeF_{2} < ClF_{2} < IF_{5}$ (4) $IF_{7} < IF_{5} < ClF_{3} < XeF_{2}$ 495. $Amongst the following, the linear species is:$ (1) $NO_{2}$ (2) $Cl_{2} O$ (3) $O_{3}$ (4) $N_{3}^{-}$ 496. $The outer orbitals of C in ethene molecule can be considered to be hybridized to give three equivalents s p^{2} orbitals. The total number ofsigma (^{σ}) and pi (^{π}) bonds in ethene molecule is$ (1) $3 sigma (^{σ}) and 2 pi (^{π}) bonds$ (2) $4 sigma (^{σ}) and 1 pi (^{π}) bonds$ (3) $5 sigma (^{σ}) and 1 pi (^{π}) bonds$ (4) $1 sigma (^{σ}) and 2 pi (^{π}) bonds.$ 497. $Match the following List- I (Molecule/Ion) A. I_{3}^{-} B. ClF_{3} C. H_{2} O D. SF_{4} List- II (Shape) 1.T-shaped 2.See-Saw 3.Angular 4.Linear$ (1) $A-4, B-1, C-3, D-2$ (2) $A-4, B-1, C-2, D-3$ (3) $A-2, B-3, C-4, D-1$ (4) $A-3, B-2, C-4, D-1$ 498. $Formation of PCl_{3} is explained on the basis of what hybridisation of phosphorus atom?$ (1) $s p^{2}$ (2) $s p^{3}$ (3) $s p^{3} d$ (4) $s p^{3} d^{2}$ 499. $Decreasing order of bond angle is :$ (1) $BeCl2 > NO2 > SO2$ (2) $BeCl2 > SO2 > NO2$ (3) $SO2 > BeCl2 > NO2$ (4) $SO2 > NO2 > BeCl2$ 500. $Bond order of 1.5 is shown by :$ (1) $O_{2}^{+}$ (2) $O_{2}^{-}$ (3) $O_{2}^{2 -}$ (4) $O2$ 501. $X e F_{2} is isostructural with$ (1) $S b C l_{3}$ (2) $B a C l_{2}$ (3) $T e F_{2}$ (4) $I C l_{2}^{-}$ 502. $Match List I with List II: List-I (molecule) A. X e O_{3} B. X e F_{2} C. X e O F_{4} D. X e F_{6} List-II (hybridization; shape) I. s p^{3} d; linear II. s p^{3}; pyramidal III. s p^{3} d^{3}; distorted octahedral IV. s p^{3} d^{2}; square pyramidal Choose the correct answer from the options given below:$ (1) $A-II, B-I, C-IV, D-III$ (2) $A-II, B-IV, C-III, D-I$ (3) $A-IV, B-II, C-III, D-I$ (4) $A-IV, B-II, C-I, D-III$ 503. $Given below are two statements: Statement-I: Since fluorine is more electronegative than nitrogen, the net dipole moment of NF_{3} is greater than NH_{3} . Statement-II: In NH_{3}, the orbital dipole due to lone pair and the dipole moment of NH bonds are in opposite direction, but in NF_{3} the orbital dipole due to lone pair and dipole moments of N-F bonds are in same direction. In the light of the above statements. Choose the most appropriate from the options given below.$ (1) $Statement I is true but Statement II is false.$ (2) $Both Statement I and Statement II are false.$ (3) $Both statement I and Statement II is are true.$ (4) $Statement I is false but Statement II is are true.$ 504. $Which of the following is a Lewis acid?$ (1) $P H_{3}$ (2) $N F_{3}$ (3) $NaH$ (4) $B (C H_{3})_{3}$ 505. $The shape of carbocation is:$ (1) $diagonal pyramidal$ (2) $trigonal planar$ (3) $tetrahedral$ (4) $diagonal$ 506. $Bond angle of 109º 28' is found in :$ (1) $NH3$ (2) $H2O$ (3) $CH3+$ (4) $NH4+$ 507. $What is the geometry of water molecule?$ (1) $Distorted tetrahedral$ (2) $Tetrahedral$ (3) $Trigonal planar$ (4) $Diagonal$ 508. $In the following molecules,$ (1) $sp^{3}, sp, sp$ (2) $sp^{3}, s p^{2}, sp$ (3) $sp^{3}, s p^{2}, s p^{2}$ (4) $s p^{3}, sp, s p^{2}$