JEE Questions for Chemistry Chemical Bonding And Molecular Structure Quiz 10 - MCQExams.com


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    Chemistry-Chemical Bonding and Molecular Structure-1275.png

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Consider the following compounds
I. chloroethene
II. benzene
III. 1, 3-butadiene
IV. 1, 3, 5-hexatriene
All the carbon atoms are sp2 hybridised in
  • I and II
  • I, III and IV
  • I, II and IV
  • III and IV
  • I, II, III and IV
Consider the following molecules or ions
Chemistry-Chemical Bonding and Molecular Structure-1278.png
  • I, II and V
  • I and II
  • Only II
  • I, II, III and IV
  • I, II, III, IV and V
Match Column I and Column II and pick out correct matching codes from the given choices.
Chemistry-Chemical Bonding and Molecular Structure-1279.png
  • A = 5, B = 4, C = 3, D = 2, E = 1
  • A = 5, B = 3, C = 4, D = 2, E = 1
  • A = 5, B = 3, C = 4, D = 1, E = 2
  • A = 4, B = 3, C = 5, D = 2, E = 1
  • A = 3, B = 4, C = 1, D = 5, E = 2
The correct sequence of hybridisation of methane, ethene and acetylene is
  • sp, sp2 , sp3
  • sp2, sp3, sp
  • sp3, sp2 , sp
  • sp3 , sp, sp2
A molecule (X ) has
I. four sigma bonds formed by the overlap of sp2 and s -orbitals
II. one sigma bond formed by sp2 and sp2 orbitals and
III. one π bond formed by px and pz orbitals. Which of the following is X?
  • C2 H6
  • C2 H3 Cl
  • C2 H2 Cl2
  • C2 H4
sp3 d hybridisation results in
  • a square planar molecule
  • an octahedron molecule
  • a trigonal bipyramidal molecule
  • a tetrahedron molecule
Hybridisation of the underline atom changes in

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    Chemistry-Chemical Bonding and Molecular Structure-1282.png

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  • in all cases
Among LiCl, BeCl2, BCl3 and CCl4, the covalent bond character follows the order

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    Chemistry-Chemical Bonding and Molecular Structure-1285.png

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Which one of the following has the shortest carbon carbon bond length ?
  • Benzene
  • Ethene
  • Ethyne
  • Ethane
Which type of bond is not present in HNO2 molecule
  • Covalent
  • Co-ordinate
  • Ionic
  • Ionic as well as co-ordinate
The type of bonding in HCl molecule is
  • Pure covalent
  • Polar covalent
  • Highly polar
  • Hydrogen bonding
The percentage of s – character in the hybrid orbitals sp, sp2 and sp3 follows the pattern
  • sp3 > sp2 > sp
  • sp > sp2 > sp3
  • sp = sp2 > sp3
  • sp = sp2 = sp3
Which of the following has zero dipole moment?
  • ClF
  • PCl3
  • SiF4
  • CFCl3
Which of the following will have a low heat of fusion ?
  • a covalent solid
  • metallic solid
  • an ionic solid
  • a molecular solid
Which one of the following hydrogen halides has the lowest boiling point ?
  • HF
  • HCl
  • HBr
  • HI
The structure and hybridization of Si (CH3)4 is
  • bent sp
  • trigonal, sp2
  • octahedral, sp3d
  • tetrahedral,sp3
Which of the following has the highest dipole moment ?
  • AsH3
  • SbH3
  • PH3
  • NH3
The hydrogen bond is strongest in
  • F – H…O
  • F - H….F
  • O - H…S
  • O - H…N
The hybridization of atomic orbitals of nitrogen in
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  • sp2, sp3and sp2 respectively
  • sp, sp2 and sp3 respectively
  • sp2, sp and sp3 respectively
  • sp2, sp3 and sp respectively
Which of the following is not paramagnetic?

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  • CO

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  • NO
The common features among the species CN− ,CO and NO+ are
  • bond order three and isoelectronic
  • bond order three and weak field ligands
  • bond order two and π-acceptors
  • isoelectronic and weak field ligands
In which of the following species is the underlined carbon having sp3 - hybridisation ?

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B10C2H12 is isoelectronic with

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    Chemistry-Chemical Bonding and Molecular Structure-1302.png

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Which of the following is ionic
  • HCl
  • CHCl3
  • IF5
  • KI
When molecule is form by chemical bonding between atoms then
  • nucleous of combining atoms are participate
  • valence electrons and inner cell electrons are participate
  • only valence electrons of combining atoms are participate
  • only inner cell electrons of combining atoms are participate
Which factor is not responsible for the formation of ionic bond?
  • crystal lattice energy
  • density
  • ionisation enthalpy
  • electron gain enthalpy
According to valence-bond theory which magnetic property oxygen possess ?
  • Paramagnetic
  • Ferrimagnetic
  • Diamagnetic
  • Anti Ferromagnetic
Who was proposed valence–bond theory ?
  • Mulliken
  • Lenus Pauling
  • Hittler and Londan
  • Hund
Which of the following sentence is incorrect for covalent bond ?
  • Strength of covalent bond depends upon overlapping at atomic orbitals
  • Covalent bond is not directional
  • There is sharing of electrons between atoms bonded by covalent bond
  • Covalent bond is formed between atoms having less difference in their electronegativity
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