JEE Main & Advanced Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना Question Bank

done Mock Test - Chemical Bonding Molecular Structure Total Questions - 25

• question_answer1)

  Two elements X and Y have following electronic Configurations

  \[X:1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{2}}\,3{{s}^{2}}\,3{{p}^{6}}4{{s}^{2}}\]

  \[Y:1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{5}}\]

  The expected compound formed by combination of X and Y will be expressed as

   
  A)
  \[X{{Y}_{2}}\]             done clear
  B)
  \[{{X}_{5}}{{Y}_{2}}\] done clear
  C)
  \[{{X}_{2}}{{Y}_{5}}\]           done clear
  D)
  \[{{X}_{{}}}{{Y}_{5}}\]   done clear
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• question_answer2)
  The compound which contains both covalent and co-ordinate bond is
  A)
  \[{{C}_{2}}{{H}_{5}}NC\]      done clear
  B)
  \[{{C}_{2}}{{H}_{5}}CN\] done clear
  C)
  \[HCN\]            done clear
  D)
  None of these done clear
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• question_answer3)
  Which of the following Lewis structure does not contribute in resonance?
  A)
  I                      done clear
  B)
  II done clear
  C)
  III                    done clear
  D)
  IV done clear
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• question_answer4)
  The correct statement for the molecule \[Cs{{I}_{3}}\] is
  A)
   It is a covalent molecule done clear
  B)
   It contains \[C{{s}^{+}}\] and \[{{I}^{-}}_{3}\] done clear
  C)
   It contains \[C{{s}^{3+}}\] and \[{{I}^{-}}\] ions done clear
  D)
   It contains \[C{{s}^{+}}\],\[{{I}^{-}}\] and lattice \[{{I}^{{}}}_{2}\] molecule done clear
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• question_answer5)
  Out of the following which has highest dipole moment?
  A)
   2,2-dimethyl propane done clear
  B)
   trans-2-pentene done clear
  C)
   cis-3-hexene   done clear
  D)
   2,2,3,3-tetramethyl butane done clear
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• question_answer6)
  Which of the following have distorted octahedral structure?
  A)
  \[S{{F}_{6}}\]                         done clear
  B)
  \[P{{F}^{\odot }}_{6}\] done clear
  C)
  \[Si{{F}^{2-}}_{6}\]   done clear
  D)
  \[Xe{{F}_{6}}\] done clear
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• question_answer7)
  The statement true for azide ion (\[{{N}_{3}}^{\odot }\]) is
  A)
   It has a non-linear structure done clear
  B)
   It is called pseudo halogens done clear
  C)
   The formal oxidation state of N in this anion I -1 done clear
  D)
   It is isoelectronic with \[N{{O}_{2}}\] done clear
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• question_answer8)
  \[{{H}_{2}}O\] is dipolar, whereas \[Be{{F}_{2}}\] is not. It I because
  A)
   The electronegativity of F is greater than that of 0 done clear
  B)
   \[{{H}_{2}}O\] involves hydrogen bonding whereas \[Be{{F}_{2}}\] is a discrete molecule done clear
  C)
   \[{{H}_{2}}O\] is linear and \[Be{{F}_{2}}\] is angular done clear
  D)
   \[{{H}_{2}}O\] is angular and \[Be{{F}_{2}}\] is linear done clear
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• question_answer9)
  The electronegativity difference between N and F is greater than that between N and H, yet the dipole moment of \[N{{H}_{3}}\] (1.5 D) is larger than that of \[N{{F}_{3}}\] (0.2 D). This is because
  A)
   In \[N{{H}_{3}}\] the atomic dipole and bond dipole are in the same direction, whereas in \[N{{F}_{3}}\] these are in opposite directions done clear
  B)
   In \[N{{H}_{3}}\] as well as \[N{{F}_{3}}\] the atomic dipole and bond dipole are in opposite directions done clear
  C)
   In \[N{{H}_{3}}\] the atomic dipole and bond dipole are in the opposite directions, whereas in\[N{{F}_{3}}\]? 3 these are in the same direction done clear
  D)
   In \[N{{H}_{3}}\] as well as in\[N{{F}_{3}}\] the atomic dipole and bond dipole are in the same direction done clear
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• question_answer10)
  In which of the following molecules/ions\[B{{F}_{3}}\],\[N{{O}^{-}}_{2}\] \[N{{H}^{-}}_{2}\],  and \[{{H}_{2}}O\] the central atom is \[s{{p}^{2}}_{}\] hybridized?
  A)
  \[B{{F}_{3}}\]and \[N{{O}^{-}}_{2}\] done clear
  B)
  \[N{{O}^{-}}_{2}\]and \[N{{H}^{-}}_{2}\] done clear
  C)
  \[N{{H}^{-}}_{2}\]and \[{{H}_{2}}O\] done clear
  D)
  \[N{{O}^{-}}_{2}\]and \[{{H}_{2}}O\] done clear
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• question_answer11)
  In which of the following pairs bond angle is\[109{}^\circ 28'\]?
  A)
  \[[N{{H}^{+}}_{4}],[B{{F}^{-}}_{4}]\] done clear
  B)
  \[N{{H}^{+}}_{4}\],\[[B{{F}_{3}}]\] done clear
  C)
  \[B{{H}_{2}}^{-}\][\[B{{F}^{-}}_{4}\]]         done clear
  D)
  \[[N{{H}^{{}}}_{3}]\],\[B{{F}^{{}}}_{3}\] done clear
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• question_answer12)
  Which one of the following species is diamagnetic in nature?
  A)
  \[H{{e}^{+}}_{2}\]    done clear
  B)
  \[{{H}_{2}}\] done clear
  C)
  \[{{H}^{+}}_{2}\]                 done clear
  D)
  \[{{H}^{-}}_{2}\] done clear
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• question_answer13)
  In which of the following ionization processes, the bond order has increased and the magnetic behavior has changed?
  A)
  \[{{C}_{2}}\to {{C}^{+}}_{2}\]        done clear
  B)
  \[NO\to N{{O}^{+}}\] done clear
  C)
  \[{{O}_{2}}\to {{O}^{+}}_{2}\]        done clear
  D)
  \[{{N}_{2}}\to {{N}^{+}}_{2}\] done clear
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• question_answer14)
  In which of the following pairs, the two species are not isostructural?
  A)
  \[C{{O}^{2-}}_{3}\,and\,N{{O}^{-}}_{3}\] done clear
  B)
  \[PC{{l}^{+}}_{4}\,and\,SiC{{l}^{{}}}_{4}\] done clear
  C)
  \[P{{F}_{5}}\,and\,Br{{F}_{5}}\]         done clear
  D)
  \[Al{{F}^{3-}}_{6}\,and\,S{{F}_{5}}\] done clear
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• question_answer15)
  Which one of the following constitutes a group of the isoelectronic species?
  A)
   \[{{C}^{2-}}_{2},{{O}^{-}}_{2}CO,NO\] done clear
  B)
   \[N{{O}^{+}}\],\[{{C}^{2-}}_{2},\]\[C{{N}^{-}},\]\[{{N}_{2}}\] done clear
  C)
   \[C{{N}^{-}},\]\[{{N}_{2}}\],\[{{O}^{2-}}_{2},\]\[{{C}^{2-}}_{2},\] done clear
  D)
   \[N{{O}_{2}}\],\[{{O}_{2}}\],\[N{{O}^{+}}\],\[CO\] done clear
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• question_answer16)
  Specify the coordination geometry around and hybridization Of N and B atoms in a 1 : 1 complex of \[B{{F}_{3}}\] and \[N{{H}_{3}}\]:
  A)
   N: tetrahedral, \[s{{p}^{3}}\], B: tetrahedral, \[s{{p}^{3}}\] done clear
  B)
   N: pyramidal, \[s{{p}^{3}}\]', B: pyramidal, \[s{{p}^{3}}\] done clear
  C)
   N: pyramidal, \[s{{p}^{3}}\], B: planar, \[s{{p}^{2}}\] done clear
  D)
   N: pyramidal, \[s{{p}^{3}}\], B: tetrahedral, \[s{{p}^{3}}\] done clear
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• question_answer17)
  Which of the following diatomic molecules would be stabilised by the removal of an electron?
  A)
  \[{{O}_{2}}\]               done clear
  B)
  \[C{{N}^{\odot }}\] done clear
  C)
  \[{{N}_{2}}\]               done clear
  D)
  \[{{C}_{2}}\] done clear
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• question_answer18)
  Which of the following statements is correct for CO?
  A)
   A double bond between C and 0 atoms done clear
  B)
   \[1\sigma \], \[1\pi \]In and 1 coordinate bond between C and 0 atoms done clear
  C)
   One lone pair of electrons on each atom done clear
  D)
   \[1\sigma \],\[2\pi \]  bonds between C and 0 atoms done clear
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• question_answer19)
  \[As{{F}_{5}}\] molecule is \[s{{p}^{3}}\]d hybridised and is trigonal bipyramidal (Tbp) shape. Which J-orbital is involved in \[s{{p}^{3}}\]d hybridisation.
  A)
  \[d{{x}^{2}}-{{y}^{2}}\]      done clear
  B)
  \[d{{z}^{2}}\] done clear
  C)
  \[dxy\]              done clear
  D)
  \[dzx\] done clear
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• question_answer20)
  Which of the following have been arranged in increasing bond order as well as bond dissociation energy?
  A)
   \[{{O}_{2}}^{-2}<{{O}_{2}}^{\odot }<{{O}^{\oplus }}_{2}<{{O}_{2}}\] done clear
  B)
   \[{{O}_{2}}^{-2}<{{O}_{2}}^{\odot }<{{O}_{2}}<{{O}_{2}}\] done clear
  C)
   \[{{O}_{2}}\]\[<{{O}^{\oplus }}_{2}\]\[<\]\[{{O}_{2}}^{2-}\]\[<{{O}_{2}}^{\odot }\] done clear
  D)
   \[{{O}^{\oplus }}_{2}\]\[<\]\[{{O}_{2}}^{2-}\]\[<{{O}_{2}}^{\odot }\]\[<{{O}_{2}}\] done clear
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• question_answer21)
  An ionic bond is established between a positive ion \[{{A}^{+}}\] and negative ion\[{{B}^{-}}\]. How many times strength of the ionic bond is affected by doubling the charge on \[{{A}^{+}}\] and making the radius halved?
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• question_answer22)
  Find out number of \[P\]-orbitals of boron atom which participate in hybridisation in \[{{B}_{2}}{{H}_{6}}\] (number of\[p\]-orbitals taking part in hybridisation per atom of boron).
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• question_answer23)
  \[A{{X}_{4}}\] Forms square planar type structure. Distance between A and X-atoms is 4 units. What is distance between two X-atoms in trans-position?
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• question_answer24)
  At 300 K and 1.00 atm, density of gaseous HF is 3.17\[g{{L}^{-1}}\]. How many HF molecules are associated by H-bonding?
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• question_answer25)
  Based on VSEPR theory, the number of 90 degree F-Br-F angles in \[Br{{F}_{5}}\]is
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