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

done Resonance Total Questions - 11

• question_answer1)
  Which one in the following is not the resonance structure of\[C{{O}_{2}}\]
  A)
                  \[O=C=O\]          done clear
  B)
                  \[^{-}O-C\equiv {{O}^{+}}\] done clear
  C)
                  \[^{+}O\equiv C-{{O}^{-}}\]        done clear
  D)
                  \[O\equiv C=O\] done clear
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• question_answer2)
  Which of the following molecule contains one pair of non-bonding electrons
  A)
                  \[C{{H}_{4}}\]    done clear
  B)
                  \[N{{H}_{3}}\] done clear
  C)
                  \[{{H}_{2}}O\]   done clear
  D)
                  \[HF\] done clear
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• question_answer3)
  Resonance is due to       [NCERT 1981; Kurukshetra CEE 1998]
  A)
                  Delocalization of sigma electrons done clear
  B)
                  Delocalization of pi electrons done clear
  C)
                  Migration of H atoms done clear
  D)
                  Migration of protons done clear
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• question_answer4)
  Resonating structures have different     [AMU 1983]
  A)
                  Atomic arrangements    done clear
  B)
                  Electronic arrangements done clear
  C)
                  Functional groups            done clear
  D)
                  Alkyl groups done clear
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• question_answer5)
  In the cyanide ion, the formal negative charge is on [AMU 1984]
  A)
                  C done clear
  B)
                  N done clear
  C)
                  Both C and N done clear
  D)
                  Resonate between C and N done clear
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• question_answer6)
  Which does not show resonance              [CPMT 1990]
  A)
                  Benzene              done clear
  B)
                  Aniline done clear
  C)
                  Ethyl amine        done clear
  D)
                  Toluene done clear
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• question_answer7)
  The enolic form of acetone contains [IIT 1990; Bihar MEE 1997]
  A)
                  9 sigma bonds, 1 pi bond and 2 lone pairs done clear
  B)
                  8 sigma bonds, 2 pi bonds and 2 lone pairs done clear
  C)
                  10 sigma bonds, 1 pi bond and 1 lone pair done clear
  D)
                  9 sigma bonds, 2 pi bonds and 1 lone pair done clear
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• question_answer8)
  Point out incorrect statement about resonance [MP PET 1997]
  A)
                  Resonance structures should have equal energy done clear
  B)
                  In resonance structures, the constituent atoms should be in the same position done clear
  C)
                  In resonance structures, there should not be the same number of electron pairs done clear
  D)
                  Resonance structures should differ only in the location of electrons around the constituent atoms done clear
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• question_answer9)
  The number of possible resonance structures for \[CO_{3}^{2-}\]is [MP PMT 2000]
  A)
                  2              done clear
  B)
                  3 done clear
  C)
                  6 done clear
  D)
                  9 done clear
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• question_answer10)
  Resonance hybrid of nitrate ion is            [RPET 2000]
  A)
                                      done clear
  B)
                  done clear
  C)
                  done clear
  D)
                  done clear
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• question_answer11)
  \[CO_{3}^{2-}\] anion has which of the following characteristics [Roorkee 1999]
  A)
                  Bonds of unequal length done clear
  B)
                  \[s{{p}^{2}}\] hybridization of C atom done clear
  C)
                  Resonance stabilization done clear
  D)
                  Same bond angles done clear
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