JEE Questions for Chemistry Chemical Bonding And Molecular Structure Quiz 12 - MCQExams.com

According to which group, hydrogen bond is form in protein molecule present in muscles of living organism ?
  • –CO–
  • –COOR
  • –CONH–
  • –COOH
On which factor van-der Waals attraction force does not depend ?
  • numbers of molecules
  • contact surface area of molecules
  • shape of molecules
  • numbers of electron in molecules
Mention number of bonding electron pairs and non bonding electron pairs in - NO–3 ion
  • 3, 1
  • 2, 2
  • 4, 0
  • 1, 3
How many numbers of bonding and non bonding electron pairs in CO2 ?
  • 4, 4
  • 2, 4
  • 4, 2
  • 2, 2
Show para magnetic compound given below.
  • O3
  • KO2
  • N2O
  • Na2O2
Which species possesses pyramidal shape ?
  • OsF2
  • SO3
  • BrF3

  • Chemistry-Chemical Bonding and Molecular Structure-1319.png
Which of the following does not possesses bond order as CO ?

  • Chemistry-Chemical Bonding and Molecular Structure-1320.png
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1321.png
  • N2

  • Chemistry-Chemical Bonding and Molecular Structure-1322.png
In which of the following molecule double bond possesses two pi space bond ?
  • S2
  • O2
  • C2
  • H2C = CH2
Which theory is useful to determine geometrical structure of molecules ?
  • molecular orbital theory
  • VSEPR theory
  • Resonance theory
  • Quantam mechanics
The one outermost electron present in Na element at
  • one corner of simple cube
  • eight corner of simple cube
  • center of simple cube
  • each corner of simple cube
In which molecules / ion have not all the equal bonds ?
  • SF4
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1323.png
  • XeF4
  • SiF4
Which of the following has maximum bond angle ?
  • NH3
  • CH4
  • CO2
  • H2O
CO2 is isostructual with
  • SnCl2
  • HgCl2
  • C2H2
  • SO2
NH3 has a higher boiling point than expected because
  • its density decreases on freezing
  • with water it forms NH4OH
  • it has strong inter molecular covalent bonds
  • it has inter molecular hydrogen bonds
The molecule with zero dipole moment is
  • chloroform
  • methyl chloride
  • carbon tetrachloride
  • methylene chloride
In OF2 ,number of bond pairs and lone pairs of electrons are respectively
  • 2, 8
  • 2, 6
  • 2, 9
  • 2, 10

Chemistry-Chemical Bonding and Molecular Structure-1324.png
  • 7, 6, 8
  • 1, 0, 2
  • 6, 6, 6
  • 8, 6, 8
Bond strength increases with
  • Bond length increasing
  • Antibonding eletrons being higher in number
  • Bond order increasing
  • Bond angle increasing

Chemistry-Chemical Bonding and Molecular Structure-1325.png
  • Bond order lower than O2
  • Bond order higher than O2
  • Bond order lower than H2
  • Bond order higher than N2
In a molecule number of electrons in BMO are more as compared to ABMO, hence
  • a bond will be formed
  • no bond will be formed
  • information is not sufficient
  • none of the above
The bond angle in the ammonium ion is equal to
  • 90o
  • 104o
  • 120o
  • 109o.28'
The correct order of dipole moment is
  • CH4 < NF3 < NH3 < H2O
  • NF3 < CH4 < NH3 < H2O
  • NH3 < NF3 < CH4 < H2O
  • H2O < NH3 < NF4 < CH4

Chemistry-Chemical Bonding and Molecular Structure-1326.png
  • 1
  • 1.5
  • 2.5
  • 0.5
Choose the incorrect statement.
  • σ bond is weaker than π bond
  • π bond is weaker than σ bond
  • π bond is present along with a σ bond
  • σ bond can be present alone
Which one of the following compound has sp2 hybridisation ?
  • CO2
  • SO2
  • CO
  • N2O

Chemistry-Chemical Bonding and Molecular Structure-1327.png
  • +152 kJ mol -1
  • -610 kJ mol -1
  • -850 kJ mol -1
  • +120 kJ mol -1
Match the following columns.
Chemistry-Chemical Bonding and Molecular Structure-1329.png
  • A = 3, B = 5, C = 2, D = 1, E = 4
  • A = 3, B = 5, C = 4, D = 1, E = 2
  • A = 3, B = 5, C = 6, D = 1, E = 2
  • A = 3, B = 5, C = 2, D = 6, E = 4
  • A = 3, B = 5, C = 2, D = 4, E = 1
Which of the following is correct ?
  • The number of electrons present in the valence shell of S in SF6 is 12
  • The rates of ionic reactions are very slow
  • According to VSEPR theory, SnCl2 is a linear molecule
  • The correct order of ability to form ionic compounds among Na+, Mg2+ and Al3+ is Al3+ > Mg2+ > Na+
If molecule MX3 has zero dipole moment ,the sigma bonding orbitals used by M (atomic number
  • pure p
  • sp hybrid
  • sp2 hybrid
  • sp3 hybrid
The pair of molecules forming strongest hydrogen bonds are
  • SiH4 and SiF6
  • 2)
    Chemistry-Chemical Bonding and Molecular Structure-1330.png

  • Chemistry-Chemical Bonding and Molecular Structure-1331.png
  • H2O and H2
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