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question_answer1)
\[B{{F}_{3}}\] and \[N{{F}_{3}}\]both molecules are covalent, but \[B{{F}_{3}}\] is non-polar and \[N{{F}_{3}}\] is polar. Its reason is [CPMT 1989; NCERT 1980]
A)
In uncombined state boron is metal and nitrogen is gas done
clear
B)
\[B-F\]bond has no dipole moment whereas \[N-F\] bond has dipole moment done
clear
C)
The size of boron atom is smaller than nitrogen done
clear
D)
\[B{{F}_{3}}\] is planar whereas \[N{{F}_{3}}\] is pyramidal done
clear
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question_answer2)
Which one is polar molecule among the following
A)
\[C{{O}_{2}}\] done
clear
B)
\[CC{{l}_{4}}\] done
clear
C)
\[{{H}_{2}}O\] done
clear
D)
\[C{{H}_{4}}\] done
clear
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question_answer3)
If the electron pair forming a bond between two atoms A and B is not in the centre, then the bond is [AIIMS 1984]
A)
Single bond done
clear
B)
Polar bond done
clear
C)
Non-polar bond done
clear
D)
\[\pi \]bond done
clear
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question_answer4)
Which of the following liquids is not deflected by a non-uniform electrostatic field [NCERT 1978]
A)
Water done
clear
B)
Chloroform done
clear
C)
Nitrobenzene done
clear
D)
Hexane done
clear
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question_answer5)
Which of the following is non-polar [EAMCET 1983]
A)
\[{{H}_{2}}S\] done
clear
B)
\[NaCl\] done
clear
C)
\[C{{l}_{2}}\] done
clear
D)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
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question_answer6)
Polarization is the distortion of the shape of an anion by an adjacently placed cation. Which of the following statements is correct [NCERT 1982]
A)
Maximum polarization is brought about by a cation of high charge done
clear
B)
Minimum polarization is brought about by a cation of low radius done
clear
C)
A large cation is likely to bring about a large degree of polarization done
clear
D)
A small anion is likely to undergo a large degree of polarization done
clear
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question_answer7)
The bonds between \[P\] atoms and \[Cl\] atoms in \[PC{{l}_{5}}\] are likely to be [MP PMT 1987]
A)
Ionic with no covalent character done
clear
B)
Covalent with some ionic character done
clear
C)
Covalent with no ionic character done
clear
D)
Ionic with some metallic character done
clear
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question_answer8)
Two electrons of one atom A and two electrons of another atom B are utilized to form a compound AB. This is an example of [MNR 1981]
A)
Polar covalent bond done
clear
B)
Non-polar covalent bond done
clear
C)
Polar bond done
clear
D)
Dative bond done
clear
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question_answer9)
In which of the following molecule is the covalent bond most polar [AMU 1985; MP PET 2001]
A)
\[HI\] done
clear
B)
\[HBr\] done
clear
C)
\[HCl\] done
clear
D)
\[{{H}_{2}}\] done
clear
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question_answer10)
Amongst \[Cl{{F}_{3}},\,\,B{{F}_{3}}\] and \[N{{H}_{3}}\] molecules the one with non-planar geometry is [MP PMT 1999]
A)
\[Cl{{F}_{3}}\] done
clear
B)
\[N{{H}_{3}}\] done
clear
C)
\[B{{F}_{3}}\] done
clear
D)
None of these done
clear
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question_answer11)
Which of the following possesses highest melting point [CPMT 1999]
A)
Chlorobenzene done
clear
B)
o-dichlorobenzene done
clear
C)
m-dichlorobenzene done
clear
D)
p-dichlorobenzene done
clear
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question_answer12)
The polar molecule among the following is [Orissa JEE 1997]
A)
\[CC{{l}_{4}}\] done
clear
B)
\[C{{O}_{2}}\] done
clear
C)
\[C{{H}_{2}}C{{l}_{2}}\] done
clear
D)
\[C{{H}_{2}}=C{{H}_{2}}\] done
clear
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question_answer13)
Which of the following have both polar and non-polar bonds [AIIMS 1997]
A)
\[{{C}_{2}}{{H}_{6}}\] done
clear
B)
\[N{{H}_{4}}Cl\] done
clear
C)
\[HCl\] done
clear
D)
\[AlC{{l}_{3}}\] done
clear
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question_answer14)
Which of the following has a high polarising power [CET Pune 1998]
A)
\[M{{g}^{2+}}\] done
clear
B)
\[A{{l}^{3+}}\] done
clear
C)
\[N{{a}^{+}}\] done
clear
D)
\[C{{a}^{2+}}\] done
clear
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question_answer15)
Maximum covalent character is associated with the compound [RPMT 1999]
A)
\[NaI\] done
clear
B)
\[Mg{{I}_{2}}\] done
clear
C)
\[AlC{{l}_{3}}\] done
clear
D)
\[Al{{I}_{3}}\] done
clear
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question_answer16)
Polarisibility of halide ions increases in the order [DCE 1999]
A)
\[{{F}^{-}},\,\,{{I}^{-}},\,\,B{{r}^{-}},\,\,C{{l}^{-}}\] done
clear
B)
\[C{{l}^{-}},\,\,B{{r}^{-}},\,\,\,{{I}^{-}},\,\,\,{{F}^{-}}\] done
clear
C)
\[{{I}^{-}},\,\,B{{r}^{-}},\,\,C{{l}^{-}},\,\,{{F}^{-}}\] done
clear
D)
\[{{F}^{-}},\,\,C{{l}^{-}},\,\,B{{r}^{-}},\,\,{{I}^{-}}\] done
clear
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question_answer17)
According to Fajan?s rule, covalent bond is favoured by [AIIMS 1999]
A)
Large cation and small anion done
clear
B)
Large cation and large anion done
clear
C)
Small cation and large anion done
clear
D)
Small cation and small anion done
clear
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question_answer18)
Which of the following statements is correct [AMU 1999]
A)
\[S{{F}_{4}}\]is polar and non-reactive done
clear
B)
\[S{{F}_{6}}\]is non-polar and very reactive done
clear
C)
\[S{{F}_{6}}\]is a strong fluorinating agent done
clear
D)
\[S{{F}_{4}}\]is prepared by fluorinating \[SC{{l}_{2}}\]with \[NaF\] done
clear
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question_answer19)
Choose the correct statement [RPMT 2000]
A)
Amino polarisation is more pronounced by highly charged cation done
clear
B)
Small cation has minimum capacity to polarise an anion. done
clear
C)
Small anion has maximum polarizability done
clear
D)
None of these done
clear
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question_answer20)
The \[ICl\] molecule is [DPMT 2001]
A)
Purely electrovalent done
clear
B)
Purely covalent done
clear
C)
Polar with negative end on iodine done
clear
D)
Polar with negative end on chlorine done
clear
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question_answer21)
Which of the following is a polar compound [AIIMS 2001]
A)
HF done
clear
B)
HCl done
clear
C)
\[HN{{O}_{3}}\] done
clear
D)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
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question_answer22)
Which of the following has zero dipole moment [MP PMT 2002]
A)
ClF done
clear
B)
\[PC{{l}_{3}}\] done
clear
C)
\[Si{{F}_{4}}\] done
clear
D)
\[CFC{{l}_{3}}\] done
clear
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question_answer23)
Which of the following compounds has least dipole moment [RPET 2003]
A)
\[P{{H}_{3}}\] done
clear
B)
\[CHC{{l}_{3}}\] done
clear
C)
\[N{{H}_{3}}\] done
clear
D)
\[B{{F}_{3}}\] done
clear
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question_answer24)
Pauling?s electronegativity values for elements are useful in predicting [UPSEAT 2004]
A)
Polarity of bonds in molecules done
clear
B)
Position of elements in electrochemical series done
clear
C)
Co-ordination number done
clear
D)
Dipole moment of various molecules done
clear
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question_answer25)
Amongst LiCl, RbCl, \[BeC{{l}_{2}}\] and \[MgC{{l}_{2}}\] the compounds with the greatest and the least ionic character, respectively, are [UPSEAT 2002]
A)
LiCl and RbCl done
clear
B)
RbCl and \[BeC{{l}_{2}}\] done
clear
C)
RbCl and \[MgC{{l}_{2}}\] done
clear
D)
\[MgC{{l}_{2}}\] and \[BeC{{l}_{2}}\] done
clear
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question_answer26)
Bond polarity of diatomic molecule is because of [UPSEAT 2002]
A)
Difference in electron affinities of the two atoms done
clear
B)
Difference in electronegativities of the two atoms done
clear
C)
Difference in ionisation potential done
clear
D)
All of these done
clear
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