JEE Questions for Chemistry Chemical Bonding And Molecular Structure Quiz 3 - MCQExams.com

The electronegativity difference between N and F is greater than that between N and H yet the dipole moment of NH3 (1.5 D) is larger than that of NF3 (0.2D). This is because
  • in NH3 the atomic dipole and bond dipole are in the same direction whereas in NF3 these are in opposite directions
  • in NH3 as well as NF3 the atomic dipole and bond dipole are in opposite directions
  • in NH3 the atomic dipole and bond dipole are in the opposite directions whereas in NF3 these are in the same direction
  • in NH3 as well as in NF3 the atomic dipole and bond dipole are in the same direction
Molecular orbital theory was given by
  • Kossel
  • Mosley
  • Mulliken
  • Werner
Which of the following is isoelectronic with CO2 ?
  • NO2
  • NO
  • N2O
  • N2O4

Chemistry-Chemical Bonding and Molecular Structure-1070.png
  • 1.5
  • 3.0
  • 2.5
  • 2.0
O2+2 has a bond order of
  • 1
  • 2
  • 3
  • 4
Which of the following would have a permanent dipole moment?
  • SiF4
  • SF4
  • XeF4
  • BF3
The number of valence shell bonding electrons to be distributed in the Lewis electron dot model for HNNN is
  • 6
  • 10
  • 11
  • 16
The total number of lone pairs of electrons in melamine is
  • 4
  • 7
  • 6
  • 9
The numer of π-bonds in
Chemistry-Chemical Bonding and Molecular Structure-1072.png
  • 2
  • 5
  • 4
  • 3
A lone pair of electrons in an atom implies
  • a pair of valence electrons not involved in bonding
  • a pair of electrons involved in bonding
  • a pair of electrons
  • a pair of valence electrons
What type of hydridisation takes place in the N atom of NH3 ?
  • sp2
  • sp3
  • dsp2
  • sp
The shape of XeO2 F2 molecule is
  • trigonal bipyramidal
  • square planar
  • tetrahedral
  • see-saw
The molecule having smallest bond angle is
  • NCl3
  • AsCl3
  • SbCl3
  • PCl3
The percentage of p -character of the hybrid orbitals in graphite and diamond are respecitively,
  • 50 and 75
  • 67 and 75
  • 33 and 75
  • 33 and 25
The structure of IF7 is
  • square pyramid
  • trigonal bipyramid
  • octahedral
  • pentagonal bipyramid
Which of the following has maximum number of lone pairs associated with Xe ?
  • XeO3
  • XeF4
  • XeF6
  • XeF2
The number of types of bonds between two carbon atoms in calcium carbide is
  • one sigma(σ) two pi(π)
  • one sigma(σ) one pi(π)
  • two sigma(σ) one pi(π)
  • two sigma(σ) two pi(π)
The number of sigma (σ) and pi (π) covalent bonds respectively in benzene nitrile are
  • 5, 13
  • 15, 3
  • 13, 5
  • 16, 2
Hybridisation shown by carbon and oxygen of — OH group in phenol are respectively
  • sp2 , sp2
  • sp3 , sp3
  • sp, sp2
  • sp2 , sp3
Based on VSEPR theory, the number of 90 degree F___Br___F angles in BrF5 is
  • 0
  • 1
  • 2
  • 3
The species having pyramidal shape is
  • SO3
  • BrF3
  • SiO2-3
  • OSF2
Which of the following has sp2 hybridisation?
  • C2 H6
  • C2 H4
  • BeCl2
  • C2 H2
The hybrid state of S in SO3 is similar to that of
  • C in C2H2
  • C in C2H4
  • C in CH4
  • C in CO2
Which of the following species is non-linear?

  • Chemistry-Chemical Bonding and Molecular Structure-1075.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1076.png

  • Chemistry-Chemical Bonding and Molecular Structure-1077.png

  • Chemistry-Chemical Bonding and Molecular Structure-1078.png
The bond angle and percentage of d-character in SF6 are
  • 120°, 20%
  • 90°, 33%
  • 109°, 25%
  • 90°, 25%
The number of sigma and pi bonds in peroxodisulphuric acid are respectively
  • 9 and 4
  • 11 and 4
  • 4 and 8
  • 4 and 9

Chemistry-Chemical Bonding and Molecular Structure-1080.png
  • planar
  • linear
  • V-shape
  • tetrahedral
The C— 0— H bond angle in ethanol is nearly
  • 90°
  • 104°
  • 120°
  • 180°
The bond angle is smallest in
  • H2O
  • H2S
  • BeCl2
  • N2O
How many π-bonds are present in naphthalene?
  • 4
  • 5
  • 6
  • 7
0:0:1


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