JEE Questions for Chemistry Chemical Bonding And Molecular Structure Quiz 16 - MCQExams.com

Numbers of possible resonating structure of carbonate is....
  • 9
  • 6
  • 3
  • 2
Which of the following molecule possesses dipole movement ?
  • trans - 1, 2 - dichloro ethene
  • trans pent - 2 - ene
  • trans pent - 2 - ene
  • 2, 2, 3, 3- tetra methyl butane
Atoms complete octet in valence shell electron during the bond formation. This postulate was proposed by which scientist ?
  • Powel
  • Lewis
  • Sigdwick
  • Mulliken

Chemistry-Chemical Bonding and Molecular Structure-1433.png

  • Chemistry-Chemical Bonding and Molecular Structure-1434.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1435.png

  • Chemistry-Chemical Bonding and Molecular Structure-1436.png

  • Chemistry-Chemical Bonding and Molecular Structure-1437.png
In buta 1, 3 - diene
  • only one sp hybridised carbon atom
  • only sp2 hybridised carbon atoms
  • Two sp3 and two sp2 hybridised carbon atoms
  • sp, sp2 and sp3 hybridized carbon atoms
Which of the following statement is irrelevant for sigma bond ?
  • strength of sigma bond is not related with overlapping of atomic orbitals
  • s - bond can form by overlapping of S - P orbitals
  • s - bond can form by overlapping of end of atomic orbitals of inner centre axis
  • This type of overlapping is also known as axial overlaping
Which of the following pair possesses very strong H - bond ?
  • CH3 COCH3 and CHCl3
  • HCOOH and CH3COOH
  • H2O and H2
  • SiH4 and SiCl4
In water bond angle is 104o 30 because
  • Oxygen atom is sp3 hybridised
  • Repulsion between lone pair election and bonding pair electron
  • Oxygen has high electromagnetically
  • H2O molecule possesses ''V'' - shape.

Chemistry-Chemical Bonding and Molecular Structure-1439.png

  • Chemistry-Chemical Bonding and Molecular Structure-1440.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1441.png

  • Chemistry-Chemical Bonding and Molecular Structure-1442.png

  • Chemistry-Chemical Bonding and Molecular Structure-1443.png

Chemistry-Chemical Bonding and Molecular Structure-1445.png
  • O
  • P
  • Q
  • R
Why lattice energy of NaCl > KBr ?
  • When size of negative ion decrease in ionic crystal then lattice energy increases
  • When volume of positive and negative ion is small than then inter ionic attraction become more and hence lattice energy increases
  • In ionic crystal when size of positive ion decrease, then lattice energy increases
  • All of given
Practical dipole movement of HCl is 1.03 D. If bond length of HCl is 1.275 Ao than what will be the percentage of ionic nature in HCl ?
  • 7
  • 17
  • 43
  • 21
Which sentence is correct with respect to bond enthalpy ?
  • As bond order is more, then bond dissociation enthalpy is less
  • As atomic volume is more, then bond energy is more
  • As bond enthalpy is more, then stability of molecule or ion is less
  • As number of nonbonding election pair on bonded atom then bond enthalpy is less
Mention proper order of bond length given below.

  • Chemistry-Chemical Bonding and Molecular Structure-1447.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1448.png

  • Chemistry-Chemical Bonding and Molecular Structure-1449.png

  • Chemistry-Chemical Bonding and Molecular Structure-1450.png
Which rule is violated in the given electronic configuration ?
Chemistry-Chemical Bonding and Molecular Structure-1451.png
  • Aufbau
  • Pauli
  • Hund
  • Given all
Mention AB4F2 type molecule.
  • BrF5
  • XeF4
  • SF6
  • XeOF4
Which of the following is the correct order for lone pair and bonding pair electrons ?
Lp = Lone pair and Bp = Bonding pair
  • Lp - Lp > Lp - Bp > Bp - Bp
  • Lp - Bp > Lp - Lp > Bp - Bp
  • Bp - Bp > Lp - Lp > Lp - Bp
  • Lp - Lp > Bp - Bp > Lp - Bp
Which of the following have equal bond order ?

  • Chemistry-Chemical Bonding and Molecular Structure-1452.png
  • CN–

  • Chemistry-Chemical Bonding and Molecular Structure-1453.png
  • B and C
The type of bond present in CuSO4.5H2O
  • electrovalent and covalent
  • covalent and co-ordinate covalent
  • electrovalent and co-ordinate covalent
  • electrovalent, covalent and co-ordinate covalent
Which of the following statement is wrong
  • sp2 hybrid orbitals are formed from two p - atomic and one s - orbitals
  • hybridization is the mixing of atomic orbitals prior to their combing into molecular orbitals
  • d2p2 hybrid orbitals are all at go to one an other
  • d2sp3 hybrid orbitals are directed towords the corners of a regular tetrahedron
Molecular shape of SF4 , CF4 , XeF4 are
  • the same with 1, 1 and 1 lone pairs of electrons respectively
  • different with 1, 0 and 2 lone pairs of electrons respectively
  • different with 0, 1 and 2 lone pairs of electrons respectively
  • different with 2, 0 and 1 lone pairs of electrons respectively
Which of the following has the regular tetrahedral structure ?
  • SF4
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1454.png

  • Chemistry-Chemical Bonding and Molecular Structure-1455.png
  • XeF4

Chemistry-Chemical Bonding and Molecular Structure-1456.png

  • Chemistry-Chemical Bonding and Molecular Structure-1457.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1458.png

  • Chemistry-Chemical Bonding and Molecular Structure-1459.png

  • Chemistry-Chemical Bonding and Molecular Structure-1460.png
Among the following compounds, the one that is polar and has the central atom with sp2 hyridisation is
  • HClO2
  • BF3
  • H2CO3
  • SiF4

Chemistry-Chemical Bonding and Molecular Structure-1461.png

  • Chemistry-Chemical Bonding and Molecular Structure-1462.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1463.png

  • Chemistry-Chemical Bonding and Molecular Structure-1464.png

  • Chemistry-Chemical Bonding and Molecular Structure-1465.png
The correct order of the O – O bond length in O2, H2O2 and O3 is
  • O2 > O3 > H2O2
  • O3 > H2O2 > O2
  • H2O2 > O3 > O2
  • O2 > H2O2 > O3
Which of the following is not Paramagnetic?
  • NO
  • S2-

  • Chemistry-Chemical Bonding and Molecular Structure-1466.png

  • Chemistry-Chemical Bonding and Molecular Structure-1467.png
Of the following hydrides which one has the lowest boiling point ?
  • AsH3
  • SbH3
  • PH3
  • NH3
Linear combination of two hybridized orbitals belonging to two atoms and each having one electron leads to a
  • Sigma bond
  • Double bond
  • Co-ordinate covalent bond
  • pi bond
N2 and O2 are converted into monocations, + N2 and O2 + respectively. Which of the following is wrong ?

  • Chemistry-Chemical Bonding and Molecular Structure-1468.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1469.png

  • Chemistry-Chemical Bonding and Molecular Structure-1470.png

  • Chemistry-Chemical Bonding and Molecular Structure-1471.png
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