Chemical Bonding PYQs Set 18 (PDF)

Set 18 of 19 · Questions 511-540 of 568

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Chemical Bonding · Set 18 (Q511-540)
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511. $What is the geometry of PCl_{5} molecule as per VSEPR?$ (1) $Trigonal bipyramidal$ (2) $Octahedral$ (3) $Tetrahedral$ (4) $Square pyramidal$ 512. $Which of the following represent the given mode of hybridization s p^{2} - s p^{2} -sp-sp from left to right.$ (1) $H2C=CH-C\equivN$ (2) $HC\equivC-C\equivC$ (3) $H_{2} C=C=C= C H_{2}$ (4) 513. $Which of the following molecules has no lone pair of electrons on central atom?$ (1) $SO_{2}$ (2) $SF_{6}$ (3) $NH_{3}$ (4) $SF_{4}$ 514. $Match List I with List II List I A. X e F_{4} B. S F_{4} C. N H_{4}^{+} D. B r F_{3} List II I. See - saw II. Square planar III. Bent T - shaped IV. Tetrahedral Choose the correct answer from the options given below:$ (1) $A-IV, B-III, C-II, D-I$ (2) $A-1I, B-I, C-III, D-1V$ (3) $A-1V, B-I, C-II, D-III$ (4) $A-II, B-I, C-IV, D-III$ 515. $Which of the following pair of molecules will have permanent dipole moments for both members?$ (1) $SiF4 and NO2$ (2) $NO2 and CO2$ (3) $NO2 and O3$ (4) $SiF4 and CO2$ 516. $The number of P-O bonds in P_{4} O_{6} is:$ (1) $6$ (2) $9$ (3) $12$ (4) $18$ 517. $Which of the following species contains equal number of σ-and π-bonds ?$ (1) $XeO4$ (2) $(CN)2$ (3) $CH2(CN)2$ (4) $HCO3-$ 518. $The hybridisations of the atomic orbitals of nitrogen in N O_{2}^{-}, N O_{2}^{+} and N H_{4}^{+} respectively are.$ (1) $s p^{3}, s p^{2} and sp$ (2) $s p, s p^{2} and s p^{3}$ (3) $s p^{3}, s p and s p^{2}$ (4) $s p^{2}, s p and s p^{3}$ 519. $Among the following, which one is a wrong statement?$ (1) $P H_{5} and B i C l_{5} do not exist.$ (2) $p π - d π bonds are present in S O_{2} .$ (3) $S e F_{4} and C H_{4} have same shape.$ (4) $I_{3}^{+} has bent geometry$ 520. $Among the oxides of nitrogen: N_{2} O_{3}, N_{2} O_{4} and N_{2} O_{5}; the molecule(s) having nitrogen-nitrogen bond is/are:$ (1) $N_{2} O_{3} and N_{2} O_{4}$ (2) $N_{2} O_{4} and N_{2} O_{5}$ (3) $N_{2} O_{3} and N_{2} O_{5}$ (4) $Only N_{2} O_{5}$ 521. $The hybridization of the underline atom changes in$ (1) $A l H_{3} changes to AlH_{4}^{-}$ (2) $H_{2} O changes to H_{3} O^{+}$ (3) $N H_{3} changes to NH_{4}^{+}$ (4) $in all cases$ 522. $The hybridisation and shape of I_{3}^{-} ion, respectively, are$ (1) $s p^{3} d^{2}; distorted octahedral$ (2) $s p^{3} d; linear$ (3) $s p^{3} d; Trigonal bipyramid$ (4) $ds p^{3}; Square pyramidal$ 523. $Which one of the following has the regular tetrahedral structure ?$ (1) $XeF4$ (2) $SF4$ (3) $BF4-$ (4) $[Ni(CN)4]2-$ 524. $Consider the molecules C H_{4}, N H_{3} and H_{2} O . Which of the given statements is false?$ (1) $The H — O — H bond angle in H_{2} O is smaller than the H — N — H bond angle in N H_{3} .$ (2) $The H — C — H bond angle in C H_{4} is larger than the H — N — H bond angle in N H_{3} .$ (3) $The H — C — H bond angle in C H_{4}, the H — N — H bond angle in N H_{3}, and the H — O — H bond angle in H_{2} O are all greater than 90.$ (4) $The H - O - H bond angle in H_{2} O is larger than the H — C — H bond angle in C H_{4} .$ 525. $Which of the following linear combination of atomic orbitals will lead to formation of molecular orbitals in homonuclear diatomic molecules [internuclear axis in z -direction]? A. 2 p_{z} and 2 p_{x} B . 2 s and 2 p_{x} C . 3 d_{xy} and 3 d_{x^{2} - y^{2}} D. 2 s and 2 p_{z} E. 2 p_{z} and 3 d_{x}^{2} - y^{2} Choose the correct answer from the options given below:$ (1) $A and B Only$ (2) $D Only$ (3) $E Only$ (4) $C and D Only$ 526. $Match List -1 with List - II. List -1 (Compound) (A) B r F_{5} (B) [C r F_{6}]^{3 -} (C) O_{3} (D) P C 1_{5} List - II (Shape) (I) bent (II) square pyramidal (III) trigonal bipyramidal (IV) octahedral Choose the correct answer from the options given below:$ (1) $(A) - (I), (B) - (II), (C) - (III), (D) - (IV)$ (2) $(A) - (IV), (B) - (III), (C) - (II), (D) - (I)$ (3) $(A) - (II), (B) - (IV), (C) - (I), (D) - (III)$ (4) $(A) - (III), (B) - (IV), (C) - (II), (D) - (I)$ 527. $Number of lone pairs of electrons in the central atom of S C 1_{2}, O_{3}, C 1 F_{3} and S F_{6}, respectively, are :$ (1) $0, 1,2 and 2$ (2) $2, l, 2 and 0$ (3) $1,2, 2 and 0$ (4) $2, 1, 0 and 2$ 528. $The number of hydrogen bonded water molecule associated with C u S O_{4} . 5 H_{2} O is -$ (1) $3$ (2) $1$ (3) $2$ (4) $5$ 529. $Which of the following compound has a P-P bond?$ (1) $H_{4} P_{2} O_{5}$ (2) $(H P O_{3})_{3}$ (3) $H_{4} P_{2} O_{6}$ (4) $H_{4} P_{2} O_{7}$ 530. $Match the following List - I List - II (Molecules) (Dipole moment μ, D) A. H_{2} O I. 0 B. BF_{3} II. 0.23 C. NH_{3} III. 1.47 D. NF_{3} IV. 1.85 The correct answer is$ (1) $A-IV, B - I, C - II, D - III$ (2) $A-IV, B - I, C - III, D - II$ (3) $A-IV, B - III, C-I, D - II$ (4) $A-III, B -IV, C-II, D - I$ 531. $In the anion H C O O^{-} the two C-O bonds are found to be of equal length. What is the reason for it?$ (1) $Electronic orbits of carbon atom are hybridized.$ (2) $The C=O bond is weaker than the C-O bond.$ (3) $The anion H C O O^{-} has two resonating structures.$ (4) $The anion is obtained by removal of a proton from the acid molecule.$ 532. $In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one?$ (1) $O_{2} \to O_{2}^{+}$ (2) $O_{2} \to O_{2}^{2 -}$ (3) $N O \to N O^{+}$ (4) $N_{2} \to N_{2}^{+}$ 533. $The hybridization of central atom of ClF_{3}, NH_{3}, SO_{3} are respectively$ (1) $sp^{2}, sp^{2}, sp^{2}$ (2) $sp^{3} d, sp^{3}, sp^{2}$ (3) $sp^{2}, sp^{3}, sp^{3} d$ (4) $sp^{3} d, sp^{3}, sp^{3}$ 534. $Which of the following molecules has trigonal planar geometry?$ (1) $B F_{3}$ (2) $N H_{3}$ (3) $P C l_{3}$ (4) $I F_{3}$ 535. $The total number of lone pairs of electrons in N_{2} O_{3} is :$ 536. $Number of compounds with one lone pair of electrons on central atom amongst following is_________O_{3}, H_{2} O, SF_{4}, ClF_{3}, NH_{3}, BrF_{5}, XeF_{4}$ 537. $The sum of number of lone pairs of electrons present on the central atoms of X e O_{3}, X e O F_{4} and X e F_{6} is_____________$ 538. $The number of water molecule (s) directly bonded to the metal centre in C u S O_{4} . 5 H_{2} O is$ 539. $Number of molecules from the following which are exceptions to octet rule is______CO_{2}, NO_{2}, H_{2} SO_{4}, BF_{3}, CH_{4}, SiF_{4}, ClO_{2}, PCl_{5}, BeF_{2}, C_{2} H_{6}, CHCl_{3}, CBr_{4}$ 540. $The total number of 'Sigma' and Pi bonds in 2 formylhex-4-enoic acid is_______$