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

done Overlapping and bonds Total Questions - 20

• question_answer1)
  Triple bond in ethyne is formed from [MP PMT 1990; NCERT 1979; EAMCET 1978; AMU 1985; CPMT 1988; MADT Bihar 1982; MH CET 2000]
  A)
                  Three sigma bonds          done clear
  B)
                  Three pi bonds done clear
  C)
                  One sigma and two pi bonds done clear
  D)
                  Two sigma and one pi bond done clear
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• question_answer2)
  The bond in the formation of fluorine molecule will be [MP PMT 1987]
  A)
                  Due to \[PC{{l}_{5}}\] overlapping done clear
  B)
                  Due to \[s-p\] overlapping done clear
  C)
                  Due to \[{{H}_{2}}{{O}_{2}}>{{O}_{3}}>{{O}_{2}}\] overlapping done clear
  D)
                  Due to hybridization done clear
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• question_answer3)
  Which type of overlapping results the formation of a \[\pi \]bond [DPMT 1981]
  A)
                  Axial overlapping of \[s-s\] orbitals done clear
  B)
                  Lateral overlapping of \[p-p\]orbitals done clear
  C)
                  Axial overlapping of \[p-p\] orbitals done clear
  D)
                  Axial overlapping of \[s-p\] orbitals done clear
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• question_answer4)
  The number and type of bonds between two carbon atoms in calcium carbide are           [AIEEE 2005]
  A)
                  One sigma, one pi            done clear
  B)
                  One sigma, two pi done clear
  C)
                  Two sigma, one pi            done clear
  D)
                  Two singma, two pi done clear
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• question_answer5)
  In a double bond connecting two atoms, there is a sharing of [CPMT 1977, 80, 81; NCERT 1975; Bihar MEE 1980; MP PET 1999]
  A)
                  2 electrons          done clear
  B)
                  1 electron done clear
  C)
                  4 electrons          done clear
  D)
                  All electrons done clear
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• question_answer6)
  Strongest bond is                                             [DPMT 1990]
  A)
                  \[C-C\]  done clear
  B)
                  \[C=C\] done clear
  C)
                  \[C\equiv C\]     done clear
  D)
                  All are equally strong done clear
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• question_answer7)
  \[\pi \]bond is formed                                   [JIPMER 2002]
  A)
                  By overlapping of atomic orbitals on the axis of nuclei done clear
  B)
                  By mutual sharing of pi electron done clear
  C)
                  By sidewise overlapping of half filled p-orbitals done clear
  D)
                  By overlapping of s-orbitals with p-orbitals done clear
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• question_answer8)
  The double bond between the two carbon atoms in ethylene consists of                      [NCERT 1981; EAMCET 1979]
  A)
                  Two sigma bonds at right angles to each other done clear
  B)
                  One sigma bond and one pi bond done clear
  C)
                  Two pi bonds at right angles to each other done clear
  D)
                  Two pi bonds at an angle of \[{{60}^{o}}\] to each other done clear
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• question_answer9)
  In the series ethane, ethylene and acetylene, the \[C-H\]  bond energy is                                            [NCERT 1977]
  A)
                  The same in all the three compounds done clear
  B)
                  Greatest in ethane done clear
  C)
                  Greatest in ethylene done clear
  D)
                  Greatest in acetylene done clear
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• question_answer10)
  In a sigma bond
  A)
                  Sidewise as well as end to end overlap of orbitals take place done clear
  B)
                  Sidewise overlap of orbitals takes place done clear
  C)
                  End to end overlap of orbitals takes place done clear
  D)
                  None of the above done clear
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• question_answer11)
  The number of sigma and pi bonds in 1-butene-3-yne are [IIT 1989]
  A)
                  5 sigma and 5 pi                done clear
  B)
                  7 sigma and 3 pi done clear
  C)
                  8 sigma and 2 pi                done clear
  D)
                  6 sigma and 4 pi done clear
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• question_answer12)
  The most acidic compound among the following is [MP PET 1993]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}OH\]         done clear
  B)
                  \[{{C}_{6}}{{H}_{5}}OH\] done clear
  C)
                  \[C{{H}_{3}}COOH\]        done clear
  D)
                  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\] done clear
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• question_answer13)
  Which of the following is not correct       [CBSE PMT 1990]
  A)
                  A sigma bond is weaker than \[\pi \]bond done clear
  B)
                  A sigma bond is stronger than \[\pi \]bond done clear
  C)
                  A double bond is stronger than a single bond done clear
  D)
                  A double bond is shorter than a single bond done clear
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• question_answer14)
  Strongest bond formed, when atomic orbitals
  A)
                  Maximum overlap           done clear
  B)
                  Minimum overlap done clear
  C)
                  Overlapping not done    done clear
  D)
                  None of them done clear
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• question_answer15)
  The \[p-p\] orbital overlapping is present in the following molecule                         [MP PET 1994]
  A)
                  Hydrogen            done clear
  B)
                  Hydrogen bromide done clear
  C)
                  Hydrogen chloride           done clear
  D)
                  Chlorine done clear
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• question_answer16)
  In \[{{N}_{2}}\]molecule, the atoms are bonded by [MP PET 1996; UPSEAT 2001]
  A)
                  One s, Two p     done clear
  B)
                  One s, One p done clear
  C)
                  Two s, One p     done clear
  D)
                  Three s bonds done clear
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• question_answer17)
  In which of following there exists a \[p\pi -d\pi \] bonding [AFMC 2001]
  A)
                  Diamond              done clear
  B)
                  Graphite done clear
  C)
                  Dimethyl amine                done clear
  D)
                  Trisilylamine done clear
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• question_answer18)
  Number of bonds in \[S{{O}_{2}}\]          [DCE 2001]
  A)
                  Two s and two p              done clear
  B)
                  Two s and one p done clear
  C)
                  Two s, two p and one lone pair done clear
  D)
                  None of these done clear
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• question_answer19)
  Which of the following has \[p\pi -d\pi \] bonding            [CBSE 2002]
  A)
                  \[NO_{3}^{-}\]  done clear
  B)
                  \[CO_{3}^{-2}\] done clear
  C)
                  \[BO_{3}^{-3}\]                done clear
  D)
                  \[SO_{3}^{-2}\] done clear
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• question_answer20)
  Number of sigma bonds in \[{{P}_{4}}{{O}_{10}}\] is        [AIEEE 2002]
  A)
                  6              done clear
  B)
                  7 done clear
  C)
                  17           done clear
  D)
                  16 done clear
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