-
question_answer1)
Which molecules has zero dipole moment [AIIMS 1980, 82, 91; Roorkee 2000; MH CET 2001]
A)
\[{{H}_{2}}O\] done
clear
B)
\[C{{O}_{2}}\] done
clear
C)
\[HF\] done
clear
D)
\[HBr\] done
clear
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question_answer2)
In the following which one have zero dipole moment [DPMT 1985]
A)
\[B{{F}_{3}}\] done
clear
B)
\[CC{{l}_{4}}\] done
clear
C)
\[BeC{{l}_{2}}\] done
clear
D)
All of these done
clear
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question_answer3)
Which molecule has the largest dipole moment [CPMT 1991]
A)
\[HCl\] done
clear
B)
\[HI\] done
clear
C)
\[HBr\] done
clear
D)
\[HF\] done
clear
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question_answer4)
The unequal sharing of bonded pair of electrons between two atoms in a molecule causes [EAMCET 1986]
A)
Dipole done
clear
B)
Radical formation done
clear
C)
Covalent bond done
clear
D)
Decomposition of molecule done
clear
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question_answer5)
Which of the following will show least dipole character [NCERT 1975; Kurukshetra CEE 1998]
A)
Water done
clear
B)
Ethanol done
clear
C)
Ethane done
clear
D)
Ether done
clear
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question_answer6)
Which of the following molecules will show dipole moment [NCERT 1972, 74; DPMT 1985]
A)
Methane done
clear
B)
Carbon tetrachloride done
clear
C)
Chloroform done
clear
D)
Carbon dioxide done
clear
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question_answer7)
Which of the following compounds possesses the dipole moment [NCERT 1978; EAMCET 1983; MP PMT 1995]
A)
Water done
clear
B)
Boron trifluoride done
clear
C)
Benzene done
clear
D)
Carbon tetrachloride done
clear
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question_answer8)
Which bond angle \[\theta \]would result in the maximum dipole moment for the triatomic molecule \[YXY\] [AIIMS 1980]
A)
\[\theta ={{90}^{o}}\] done
clear
B)
\[\theta ={{120}^{o}}\] done
clear
C)
\[\theta ={{150}^{o}}\] done
clear
D)
\[\theta ={{180}^{o}}\] done
clear
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question_answer9)
Which of the following would have a permanent dipole moment [CBSE PMT 2005]
A)
\[B{{F}_{3}}\] done
clear
B)
\[Si{{F}_{4}}\] done
clear
C)
\[S{{F}_{4}}\] done
clear
D)
\[Xe{{F}_{4}}\] done
clear
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question_answer10)
Carbon tetrachloride has no net dipole moment because of [IIT 1982, 83; MP PMT 1985, 91; EAMCET 1988; AMU 1999]
A)
Its planar structure done
clear
B)
Its regular tetrahedral structure done
clear
C)
Similar sizes of carbon and chlorine atoms done
clear
D)
Similar electron affinities of carbon and chlorine done
clear
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question_answer11)
The molecule which has the largest dipole moment amongst the following [MNR 1983]
A)
\[C{{H}_{4}}\] done
clear
B)
\[CHC{{l}_{3}}\] done
clear
C)
\[CC{{l}_{4}}\] done
clear
D)
\[CH{{I}_{3}}\] done
clear
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question_answer12)
Positive dipole moment is present in [MNR 1986; MP PET 2000]
A)
\[CC{{l}_{4}}\] done
clear
B)
\[{{C}_{6}}{{H}_{6}}\] done
clear
C)
\[B{{F}_{3}}\] done
clear
D)
\[HF\] done
clear
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question_answer13)
The polarity of a covalent bond between two atoms depends upon [AMU 1982]
A)
Atomic size done
clear
B)
Electronegativity done
clear
C)
Ionic size done
clear
D)
None of the above done
clear
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question_answer14)
Pick out the molecule which has zero dipole moment [CPMT 1989; EAMCET 1993; MP PMT 1999]
A)
\[N{{H}_{3}}\] done
clear
B)
\[{{H}_{2}}O\] done
clear
C)
\[BC{{l}_{3}}\] done
clear
D)
\[S{{O}_{2}}\] done
clear
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question_answer15)
Zero dipole moment is present in [DPMT 1986; IIT 1987]
A)
\[N{{H}_{3}}\] done
clear
B)
\[{{H}_{2}}O\] done
clear
C)
cis 1, 2-dichloroethene done
clear
D)
trans 1, 2-dichloroethene done
clear
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question_answer16)
Which of the following is the most polar [AFMC 1988]
A)
\[CC{{l}_{4}}\] done
clear
B)
\[CHC{{l}_{3}}\] done
clear
C)
\[C{{H}_{3}}OH\] done
clear
D)
\[C{{H}_{3}}Cl\] done
clear
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question_answer17)
Which one has minimum (nearly zero) dipole moment [IIT Screening 1994; CBSE PMT 1996]
A)
Butene-1 done
clear
B)
cis butene-2 done
clear
C)
trans butene-2 done
clear
D)
2-methyl-1-propene done
clear
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question_answer18)
Which one of the following is having zero dipole moment [RPMT 1997; EAMCET 1988; MNR 1991]
A)
\[CC{{l}_{4}}\] done
clear
B)
\[C{{H}_{3}}Cl\] done
clear
C)
\[C{{H}_{3}}F\] done
clear
D)
\[CHC{{l}_{3}}\] done
clear
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question_answer19)
Which of the following molecules does not possess a permanent dipole moment [CBSE PMT 1994]
A)
\[{{H}_{2}}S\] done
clear
B)
\[S{{O}_{2}}\] done
clear
C)
\[C{{S}_{2}}\] done
clear
D)
\[S{{O}_{3}}\] done
clear
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question_answer20)
Which of the following has zero dipole moment [CPMT 1997; AFMC 1998; CBSE PMT 2001]
A)
\[C{{H}_{2}}C{{l}_{2}}\] done
clear
B)
\[C{{H}_{4}}\] done
clear
C)
\[N{{H}_{3}}\] done
clear
D)
\[P{{H}_{3}}\] done
clear
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question_answer21)
Fluorine is more electronegative than either boron or phosphorus. What conclusion can be drawn from the fact that \[B{{F}_{3}}\] has no dipole moment but \[P{{F}_{3}}\] does [Pb. PMT 1998]
A)
\[B{{F}_{3}}\]is not spherically symmetrical but \[P{{F}_{3}}\] is done
clear
B)
\[B{{F}_{3}}\]molecule must be linear done
clear
C)
The atomic radius of \[P\] is larger than the atomic radius of \[B\] done
clear
D)
The \[B{{F}_{3}}\] molecule must be planar triangular done
clear
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question_answer22)
Which molecule does not show zero dipole moment [RPET 1997, 99]
A)
\[B{{F}_{3}}\] done
clear
B)
\[N{{H}_{3}}\] done
clear
C)
\[CC{{l}_{4}}\] done
clear
D)
\[C{{H}_{4}}\] done
clear
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question_answer23)
The dipole moment of HBr is \[1.6\times {{10}^{-30}}\]cm and interatomic spacing is 1Å. The % ionic character of HBr is [MP PMT 2000]
A)
7 done
clear
B)
10 done
clear
C)
15 done
clear
D)
27 done
clear
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question_answer24)
Non-polar solvent is [RPET 2000]
A)
Dimethyl sulphoxide done
clear
B)
Carbon tetrachloride done
clear
C)
Ammonia done
clear
D)
Ethyl alcohol done
clear
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question_answer25)
Which shows the least dipole moment [UPSEAT 2001; DPMT 1982]
A)
\[CC{{l}_{4}}\] done
clear
B)
\[CHC{{l}_{3}}\] done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}OH\] done
clear
D)
\[C{{H}_{3}}COC{{H}_{3}}\] done
clear
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question_answer26)
Which molecule has zero dipole moment [UPSEAT 2001]
A)
\[{{H}_{2}}O\] done
clear
B)
AgI done
clear
C)
\[PbS{{O}_{4}}\] done
clear
D)
HBr done
clear
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question_answer27)
The dipole moment is zero for the molecule [IIT 1989; MP PMT 2002]
A)
Ammonia done
clear
B)
Boron trifluoride done
clear
C)
Sulphur dioxide done
clear
D)
Water done
clear
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question_answer28)
\[{{N}_{2}}\] is less reactive than \[C{{N}^{-}}\]due to [UPSEAT 2003]
A)
Presence of more electrons in orbitals done
clear
B)
Absence of dipole moment done
clear
C)
Difference in spin quantum no done
clear
D)
None of these done
clear
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question_answer29)
In a polar molecule, the ionic charge is \[4.8\times {{10}^{-10}}\] e.s.u. If the inter ionic distance is one Å unit, then the dipole moment is [MH CET 2003]
A)
41.8 debye done
clear
B)
4.18 debye done
clear
C)
4.8 debye done
clear
D)
0.48 debye done
clear
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question_answer30)
Which of the following is a polar compound [Pb. CET 2000]
A)
\[HCl\] done
clear
B)
\[{{H}_{2}}Se\] done
clear
C)
\[C{{H}_{4}}\] done
clear
D)
\[HI\] done
clear
View Solution play_arrow
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question_answer31)
Which of the following has no dipole moment [DCE 2002]
A)
\[C{{O}_{2}}\] done
clear
B)
\[S{{O}_{3}}\] done
clear
C)
\[{{O}_{3}}\] done
clear
D)
\[{{H}_{2}}O\] done
clear
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question_answer32)
Which of the following is non-polar [DCE 2002]
A)
\[PC{{l}_{5}}\] done
clear
B)
\[PC{{l}_{3}}\] done
clear
C)
\[S{{F}_{6}}\] done
clear
D)
\[I{{F}_{7}}\] done
clear
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question_answer33)
Identify the non-polar molecule in the set of compounds given : \[HCl,\,HF,\,{{H}_{2}},\,HBr\] [UPSEAT 2004]
A)
\[{{H}_{2}}\] done
clear
B)
\[HCl\] done
clear
C)
\[HF,\,HBr\] done
clear
D)
\[HBr\] done
clear
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question_answer34)
Dipole moment is shown by [IIT 1986]
A)
1, 4-dichlorobenzene done
clear
B)
\[cis\] 1, 2-dichloroethene done
clear
C)
\[trans\]1, 2-dichloroethene done
clear
D)
\[trans\]1, 2-dichloro-2-pentene done
clear
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question_answer35)
If HCl molecule is completely polarized, so expected value of dipole moment is 6.12D (deby), but experimental value of dipole moment is 1.03D. Calculate the percentage ionic character [Kerala CET 2005]
A)
17 done
clear
B)
83 done
clear
C)
50 done
clear
D)
Zero done
clear
E)
90 done
clear
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