# Solved papers for NEET Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना NEET PYQ-Chemical Bonding Molecular

### done NEET PYQ-Chemical Bonding Molecular Total Questions - 92

• question_answer1) In $PO_{4}^{3-}$ ion, the formal charge on each oxygen atom and $P-O$ bond order respectively are: [AIPMT 1998]

A)
$-\text{ }0.75,\text{ }0.6$

B)
$-\text{ }0.75,\text{ }1.0$

C)
$-\text{ }0.75,\text{ }1.25$

D)
$-\text{ }3,\text{ }1.25$

• question_answer2) The number of anti-bonding electrons in $O_{2}^{2-}$ molecular ion on the basis of molecular orbital theory is (Atomic no. of O is 8):                                                                                                          [AIPMT 1998]

A)
5

B)
2

C)
4

D)
6

• question_answer3) The most suitable method of the separation of a mixture of ortho and para-nitrophenol mixed in the ratio of 1 : 1 is:                  [AIPMT 1999]

A)
distillation

B)
crystallization

C)
vaporization

D)
colour spectrum

• question_answer4) The type of hybridisation of boron in diborane is:                                       [AIPMT 1999]

A)
sp-hybridisation

B)
$s{{p}^{2}}$-hybridisation

C)
$s{{p}^{3}}$-hybridisation

D)
$s{{p}^{3}}{{d}^{2}}$-hybridisation

• question_answer5) Which one of the following is planar?

A)
$Xe{{F}_{4}}$

B)
$Xe{{O}_{4}}$

C)
$Xe{{O}_{3}}F$

D)
$Xe{{O}_{3}}{{F}_{2}}$

• question_answer6) Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding? [AIPMT 2000]

A)
$N{{H}_{3}}$

B)
${{H}_{2}}O$

C)
HCl

D)
HF

• question_answer7) Among the following the electron deficient compound is:                             [AIPMT 2000]

A)
$BC{{l}_{3}}$

B)
$CC{{l}_{4}}$

C)
$PC{{l}_{5}}$

D)
$BeC{{l}_{2}}$

• question_answer8) The relationship between the dissociation energy of ${{N}_{2}}$ and $N_{2}^{+}$ is:                  [AIPMT 2000]

A)
dissociation energy of $N_{2}^{+}>$ dissociation energy of $N_{2}^{+}$

B)
dissociation energy of ${{N}_{2}}=$ dissociation energy of $N_{2}^{+}$

C)
dissociation energy of ${{N}_{2}}>$ dissociation energy of $N_{2}^{+}$

D)
dissociation energy of ${{N}_{2}}$ can either be lower or higher than the dissociation energy of $N_{2}^{+}$

• question_answer9) Which one of   the following is not paramagnetic?                                                   [AIPMT 2000]

A)
NO

B)
$N_{2}^{+}$

C)
CO

D)
$O_{2}^{-}$

• question_answer10) Which of the following two are isostructural?                                                           [AIPMT 2001]

A)
$Xe{{F}_{2}},\,IF_{2}^{-}$

B)
$N{{H}_{3}},\,B{{F}_{3}}$

C)
$CO_{3}^{2-},\,SO_{3}^{2-}$

D)
$PC{{l}_{5}},\,IC{{l}_{5}}$

• question_answer11) In which of the following, bond angle is maximum?                                    [AIPMT 2001]

A)
$N{{H}_{3}}$

B)
$NH_{4}^{+}$

C)
$PC{{I}_{3}}$

D)
$SC{{l}_{2}}$

• question_answer12) In $X-H.......Y,\,\,X$ and Y both are electronegative elements:                    [AIPMT 2001]

A)
electron density on X will increase and on H will decrease

B)
in both electron density will increase

C)
in both electron density will decrease

D)
on X electron density will decrease and at H increase

• question_answer13) Main axis of a diatomic molecule is z, molecular orbital ${{p}_{x}}$ and ${{p}_{y}}$ overlaps to form, which of the orbital?                                                                                                                               [AIPMT 2001]

A)
$\pi -$molecular orbital

B)
$\sigma -$molecular orbital

C)
$\delta -$molecular orbital

D)
No bond will form

• question_answer14) In $NO_{3}^{-}$ ion number of bond pair and lone pair of electron on nitrogen atom are:   [AIPMT 2002]

A)
2, 2

B)
3, 1

C)
1, 3

D)
4, 0

• question_answer15) Among the following, the pair in which the two species are not isostructural, is:                                    [AIPMT (S) 2004]

A)
$Si{{F}_{4}}$ and $S{{F}_{4}}$

B)
$IO_{3}^{-}$ and $Xe{{O}_{3}}$

C)
$B{{H}_{4}}$ and $NH_{4}^{+}$

D)
$PF_{6}^{-}$ and $SF_{6}^{{}}$

• question_answer16) In a regular octahedral molecule, $M{{X}_{6}}$ the number of $X-M-X$ bonds at 180° is:    [AIPMT (S) 2004]

A)
three

B)
two

C)
six

D)
four

• question_answer17) ${{H}_{2}}O$ is dipolar, whereas $Be{{F}_{2}}$ is not. It is because:                      [AIPMT (S) 2004]

A)
the electro negativity of F is greater than that of O

B)
${{H}_{2}}O$ involves hydrogen bonding whereas$Be{{F}_{2}}$  is a discrete molecule

C)
${{H}_{2}}O$is linear and $Be{{F}_{2}}$ is angular

D)
${{H}_{2}}O$ is angular and $Be{{F}_{2}}$ is linear

• question_answer18) In $Br{{F}_{3}}$ molecule, the lone pairs occupy equatorial positions to minimize:               [AIPMT (S) 2004]

A)
lone pair-bond pair repulsion only

B)
bond pair-bond pair repulsion only

C)
lone pair-lone pair repulsion and lone pair-bond pair repulsion

D)
lone pair-lone pair repulsion only

• question_answer19) The correct order in which the $O-O$ bond length increases in the following is:                       [AIPMT (S) 2005]

A)
${{H}_{2}}{{O}_{2}}<{{O}_{2}}<{{O}_{3}}$

B)
${{O}_{3}}<{{H}_{2}}{{O}_{2}}<{{O}_{2}}$

C)
${{O}_{2}}<{{O}_{3}}<{{H}_{2}}{{O}_{2~}}$

D)
${{O}_{2}}<{{H}_{2}}{{O}_{2}}<{{O}_{3}}$

• question_answer20) Which of the following molecules has trigonal planar geometry?              [AIPMT (S) 2005]

A)
$I{{F}_{3}}~~$

B)
$PC{{l}_{3}}$

C)
$N{{H}_{3}}$

D)
$B{{F}_{3}}$

• question_answer21) The correct sequence of increasing covalent character is represented by:                                 [AIPMT (S) 2005]

A)
$LiCl<NaCl<BeC{{l}_{2}}$

B)
$~BeC{{l}_{2}}<NaCl<LiCl$

C)
$~NaCl<LiCl<BeC{{l}_{2}}$

D)
$BeC{{l}_{2}}<LiCl<NaCl$

• question_answer22) Which of the following is the electron deficient molecule?                       [AIPMT (S) 2005]

A)
${{B}_{2}}{{H}_{6}}$

B)
${{C}_{2}}{{H}_{6}}$

C)
$P{{H}_{3}}$

D)
$Si{{H}_{4}}$

• question_answer23) The surface tension of which of the following liquid is maximum?           [AIPMT (S) 2005]

A)
${{H}_{2}}O$

B)
${{C}_{6}}{{H}_{6}}$

C)
$C{{H}_{3}}OH$

D)
${{C}_{2}}{{H}_{5}}OH$

• question_answer24) Which of the following would have a permanent dipole moment?                                   [AIPMT (S) 2005]

A)
$B{{F}_{3}}$

B)
$Si{{F}_{4}}$

C)
$S{{F}_{4}}$

D)
$Xe{{F}_{4}}$

• question_answer25) Which one of the following oxides is expected to exhibit paramagnetic behaviour?                   [AIPMT (S) 2005]

A)
$C{{O}_{2}}$

B)
$S{{O}_{2}}$

C)
$Cl{{O}_{2}}$

D)
$Si{{O}_{2}}$

• question_answer26) In which of the following molecules are all the bonds not equal?            [AIPMT (S) 2006]

A)
$Cl{{F}_{3}}$

B)
$B{{F}_{3}}$

C)
$Al{{F}_{3}}$

D)
$N{{F}_{3}}$

• question_answer27) The electronegativity difference between N and F is greater than that between N and H yet the dipole moment of $N{{H}_{3}}$ (1.5 D) is larger than that of $N{{F}_{3}}$ (0.2 D). This is because:            [AIPMT (S) 2006]

A)
in $N{{H}_{3}}$ as well as in $N{{F}_{3}}$ the atomic dipole and bond dipole are in the same direction

B)
in $N{{H}_{3}}$ the atomic dipole and bond dipole are in the same direction whereas in $N{{F}_{3}}$ these are in opposite directions

C)
in $N{{H}_{3}}$ as well as $N{{F}_{3}}$ the atomic dipole and bond dipole are in opposite directions

D)
in $N{{H}_{3}}$ the atomic dipole and bond dipole are in the opposite directions whereas in $N{{F}_{3}}$these are in the same directions

• question_answer28) The correct order regarding the electronegativity of hybrid orbitals of carbon is:                        [AIPMT(S) 2006]

A)
$sp>s{{p}^{2}}<s{{p}^{3}}$

B)
$sp>s{{p}^{2}}>s{{p}^{3}}$

C)
$sp<s{{p}^{2}}>s{{p}^{3}}$

D)
$sp<s{{p}^{2}}<s{{p}^{3}}$

• question_answer29) Which of the following species has a linear shape?

A)
$NO_{2}^{-}$

B)
$S{{O}_{2}}$

C)
$NO_{2}^{+}$

D)
${{O}_{3}}$

• question_answer30) Which of the following is not isostructural with$SiC{{l}_{4}}$?                               [AIPMT (S) 2006]

A)
$SC{{l}_{4}}$

B)
$SO_{4}^{2-}$

C)
$PO_{4}^{3-}$

D)
$NH_{4}^{+}$

• question_answer31) The correct order of $C-O$ bond length among $CO,\,\,CO_{3}^{2-},\,C{{O}_{2}}$ is:          [AIPMT (S) 2007]

A)
$C{{O}_{2}}<CO_{3}^{2-}<CO$

B)
$CO<CO_{3}^{2-}<C{{O}_{2}}$

C)
$CO_{3}^{2-}<C{{O}_{2}}<CO~$

D)
$CO<C{{O}_{2}}<CO_{3}^{2-}$

• question_answer32) In which of the following pairs, the two species are iso-structural?                                              [AIPMT (S) 2007]

A)
$S{{F}_{4}}$ and $Xe{{F}_{4}}$

B)
$SO_{3}^{2-}$ and $NO_{3}^{-}$

C)
$B{{F}_{3}}$ and $N{{F}_{3}}$

D)
$BrO_{3}^{-}$ and $Xe{{O}_{3}}$

• question_answer33) The angular shape of ozone molecule $({{O}_{3}})$ consists of                      [AIPMT (S) 2008]

A)
1 sigma and 2 pi bonds

B)
2 sigma and 2 pi bonds

C)
1 sigma and 1 pi bonds

D)
2 sigma and 1 pi bonds

• question_answer34) The correct order of increasing bond angles in the following triatomic species is                         [AIPMT (S) 2008]

A)
$NO_{2}^{-}<NO_{2}^{+}<N{{O}_{2}}$

B)
$NO_{2}^{-}<N{{O}_{2}}<NO_{2}^{+}$

C)
$NO_{2}^{+}<N{{O}_{2}}<NO_{2}^{-}$

D)
$NO_{2}^{+}<NO_{2}^{-}<N{{O}_{2}}$

• question_answer35) Four diatomic species are listed below in different sequences. Which of these presents the correct order of their increasing bond order?                                                                                        [AIPMT (S) 2008]

A)
$O_{2}^{-}<NO<C_{2}^{2-}<He_{2}^{+}$

B)
$NO<C_{2}^{2-}<O_{2}^{-}He_{2}^{+}$

C)
$C_{2}^{2-}<He_{2}^{+}<NO<O_{2}^{-}$

D)
$He_{2}^{+}<O_{2}^{-}<NO<C_{2}^{2-}$

• question_answer36) In the hydrocarbon                                                                                                                      [AIPMT (S) 2008] $\underset{6}{\mathop{C{{H}_{3}}}}\,-\underset{5}{\mathop{CH}}\,=\underset{4}{\mathop{CH}}\,-\underset{3}{\mathop{C{{H}_{2}}}}\,-\underset{2}{\mathop{C}}\,\equiv \underset{1}{\mathop{CH}}\,$ The state of hybridisation of carbons 1, 3 and 5 are in the following sequence

A)
$~s{{p}^{2}},sp,\text{ }s{{p}^{3}}$

B)
$sp,\text{ }s{{p}^{3}},\text{ }s{{p}^{2}}$

C)
$sp,\text{ }s{{p}^{2}},\text{ }s{{p}^{3}}$

D)
$s{{p}^{3}},s{{p}^{2}},\text{ }sp$

• question_answer37) According to MO theory which of the following lists ranks the nitrogen species in tends of increasing bond order?       [AIPMT (S) 2009]

A)
$\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,=\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,+\text{H}-\xrightarrow[{}]{{}}\text{H}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{H}$

B)
$\text{mo}{{\text{l}}^{\text{-1}}}$

C)
$\text{mo}{{\text{l}}^{\text{-1}}}$

D)
$\text{mo}{{\text{l}}^{\text{-1}}}$

• question_answer38) The state of hybridization of $\text{mo}{{\text{l}}^{\text{-1}}}$ and $1.77\times {{10}^{-5}}$is in the following sequence                                                                                                            [AIPMT (S) 2009]

A)
$sp,\text{ }s{{p}^{3}},\text{ }s{{p}^{2}}$ and $s{{p}^{3}}$

B)
$s{{p}^{3}},\text{ }s{{p}^{2}},\text{ }s{{p}^{2}}$ and sp

C)
$sp,\text{ }s{{p}^{2}},\text{ }s{{p}^{2}}$ and $s{{p}^{3}}$

D)
$sp,s{{p}^{2}},\text{ }s{{p}^{3}}$ and $s{{p}^{2}}$

• question_answer39) In the case of alkali metals, the covalent character decreases in the order             [AIPMT (S) 2009]

A)
$MCl>Ml>MBr>MF$

B)
$MF>MCl>MBr>Ml$

C)
$MF>MCl>MI>MBr$

D)
$Al>MBr>MCl>MF$

• question_answer40) In which of the following molecules/ions $B{{F}_{3}},\,NO_{2}^{-},\,NH_{2}^{-}$ and ${{H}_{2}}O$, the central atom is sp2 hybridised?                                                                                                   [AIPMT (S) 2009]

A)
$NO_{2}^{-}$ and$NH_{2}^{-}$

B)
$NH_{2}^{-}$ and ${{H}_{2}}O$

C)
$NO_{2}^{-}$ and ${{H}_{2}}O$

D)
$B{{F}_{2}}$ and $NO_{2}^{-}$

• question_answer41) What is the dominant intermolecular force or bond that must be overcome in converting liquid $C{{H}_{3}}OH$ to a gas?                                                                                                                        [AIPMT (S) 2009]

A)
Hydrogen bonding

B)
Dipole-dipole interaction

C)
Covalent bonds

D)
London dispersion force

• question_answer42) In which of the following pairs of molecules/ions, the central atoms have sp2 hybridization?       [AIPMT (S) 2010]

A)
$NO_{2}^{-}$ and $N{{H}_{3}}$

B)
$BF_{3}^{{}}$ and $NH_{2}^{-}$

C)
$NH_{2}^{-}$ and $H_{2}^{{}}O$

D)
$BF_{3}^{{}}$ and

• question_answer43) Which one of the following species does not exist under normal conditions?                             [AIPMT (S) 2010]

A)
x$Be_{2}^{+}$

B)
$Be_{2}^{{}}$

C)
${{B}_{2}}$

D)
$Li_{2}^{{}}$

• question_answer44) The correct order of increasing bond angles in the following species is      [AIPMT (S) 2010]

A)
$C{{l}_{2}}O<Cl{{O}_{2}}<ClO_{2}^{-}$

B)
$C{{l}_{2}}O<C{{l}_{2}}O<ClO_{2}^{-}$

C)
$C{{l}_{2}}O<ClO_{2}^{-}<ClO_{2}^{{}}$

D)
$ClO_{2}^{-}<C{{l}_{2}}O<ClO_{2}^{{}}$

• question_answer45) In which one of the following species the central atom has the type of hybridization which is not the same as that present in the other three?                                                                                [AIPMT (S) 2010]

A)
$S{{F}_{4}}$

B)
$I_{3}^{-}$

C)
$SbCl_{5}^{2-}$

D)
$PC{{l}_{5}}$

• question_answer46) In which of the following molecules the central atom does not have sp3 hybridisation?  [AIPMT (M) 2010]

A)
$C{{H}_{4}}$

B)
$S{{F}_{4}}$

C)
$BF_{4}^{-}$

D)
$NH_{4}^{+}$

• question_answer47) Some of the properties of the two species, $NO_{3}^{-}$and ${{H}_{3}}O_{{}}^{+}$ are described below. Which one of them is correct?                                                                                                              [AIPMT (M) 2010]

A)
Dissimilar in hybridisation for the central atom with different structures

B)
Isostructural with same hybridisation for the central atom

C)
Isostructural with different hybridization for the central atom

D)
Similar in hybridisation for the central atom with different structures

• question_answer48)  Considering the state of hybridisation of carbon atoms, find out the molecule among the following which is linear.                                                                                                                           [AIPMT (S) 2011]

A)
$C{{H}_{3}}-C\equiv C-C{{H}_{3}}$

B)
$C{{H}_{2}}=CH-C{{H}_{2}}-C\equiv CH$

C)
$C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}$

D)
$C{{H}_{3}}-CH=CH-C{{H}_{3}}$

• question_answer49)   Which of the two ions from the list given below, have the geometry that is explained by the same hybridisation of orbitals, $NO_{2}^{-},NO_{3}^{-},$$NH_{2}^{-},$$NH_{4}^{+},$$SC{{N}^{-}}?$              [AIPMT (S) 2011]

A)
$NH_{4}^{-}$ and $NO_{3}^{-}$

B)
$SCN_{{}}^{+}$ and $NO_{2}^{-}$

C)
$NO_{2}^{-}$ and $NH_{2}^{-}$

D)
$NO_{2}^{-}$ and $NH_{3}^{-}$

• question_answer50) Which of the following compounds has the lowest melting point?                        [AIPMT (S) 2011]

A)
$CaB{{r}_{2}}$

B)
$Ca{{l}_{2}}$

C)
$Ca{{F}_{2}}$

D)
$CaC{{l}_{2}}$

• question_answer51) Which of the following has the minimum bond length?                                      [AIPMT (S) 2011]

A)
$O_{2}^{-}$

B)
$O_{2}^{2-}$

C)
$O_{2}^{{}}$

D)
$O_{2}^{+}$

• question_answer52) The correct order of increasing bond length of $C-H,C-O,C-C$ and $C=C$ is                        [AIPMT (S) 2011]

A)
$C-C<C=C<C-O<C-H$

B)
$C-O<C-H<C-C<C=C$

C)
$C-H<C-O<C-C<C=C$

D)
$C-H<C=C<C-O<C-C$

• question_answer53) Which of the following structures is the most preferred and hence of lowest energy for$S{{O}_{3}}$? [AIPMT (M) 2011]

A)

B)

C)

D)

• question_answer54) The pairs of species of oxygen and their magnetic behaviors are noted below. Which of the following presents the correct description?                                                                                                           [AIPMT (M) 2011]

A)
$O_{2}^{-},O_{2}^{2-}-$Both diamagnetic

B)
${{O}^{+}},\,O_{2}^{2-}-$Both paramagnetic

C)
$O_{2}^{+},\,{{O}_{2}}-$ Both paramagnetic

D)
$O_{{}}^{{}},O_{2}^{2-}-$Both paramagnetic

• question_answer55) Which one of the following pairs is  isostructural (i.e., having the same shape and hybridization)? [AIPMT (S) 2012]

A)
$[BC{{l}_{3}}\,\text{and}\,BrC{{l}_{3}}]$

B)
$[N{{H}_{3}}\,\text{and}\,NO_{3}^{-}]$

C)
$[N{{F}_{3}}\,\text{and}\,B{{F}_{3}}]$

D)
$[BF_{4}^{-}\,\text{and}\,NH_{4}^{+}]$

• question_answer56) Bond order of 1.5 is shown by                                                                  [AIPMT (S) 2012]

A)
$O_{2}^{+}$

B)
$O_{2}^{-}$

C)
$O_{2}^{2-}$

D)
$O_{2}^{{}}$

• question_answer57) Which of the following species contains three bond pairs and one lone pair around the central atom? [AIPMT (S) 2012]

A)
${{H}_{2}}O$

B)
$B{{F}_{3}}$

C)
$NH_{2}^{-}$

D)
$PC{{l}_{3}}$

• question_answer58) The pair of species with the same bond order is                                                                   [AIPMT (S) 2012]

A)
$O_{2}^{2-},{{B}_{2}}$

B)
$O_{2}^{+},N{{O}^{+}}$

C)
$NO,CO$

D)
${{N}_{2}},{{O}_{2}}$

• question_answer59) During change of ${{O}_{2}}$ to $O_{2}^{-}$ ion, the electron adds on which one of the following orbitals?                                                                                                                                                [AIPMT (M) 2012]

A)
$\overset{\text{*}}{\mathop{\text{ }\!\!\pi\!\!\text{ }}}\,$orbital

B)
$\text{ }\!\!\pi\!\!\text{ }$orbital

C)
$\overset{\text{*}}{\mathop{\sigma }}\,$orbital

D)
$\overset{{}}{\mathop{\sigma }}\,$

• question_answer60)  Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them.                                   [AIPMT (M) 2012]

A)
$NO<O_{2}^{-}<C_{2}^{2-}<He_{2}^{+}$

B)
$O_{2}^{-}<NO<C_{2}^{2-}<He_{2}^{+}$

C)
$C_{2}^{2-}<He_{2}^{+}<O_{2}^{-}<NO$

D)
$He_{2}^{+}<O_{2}^{-}<NO<C_{2}^{2-}$

• question_answer61) Dipole-induced dipole interactions are present in which of the following pairs?  [NEET 2013]

A)
${{H}_{2}}O$ and alcohol

B)
$C{{l}_{2}}$ and $CC{{l}_{4}}$

C)
$HCl$ and $He$ atoms

D)
$Si{{F}_{4}}$ and $He$atoms

• question_answer62) Which   of   the   following   is paramagnetic?                                                                     [NEET 2013]

A)
$CO$

B)
$O_{2}^{-}$

C)
$C{{N}^{-}}$

D)
$N{{O}^{+}}$

• question_answer63) Identify the correct order of solubility in aqueous medium.                                                    [NEET 2013]

A)
$CuS\,>\,Zn\,>\,N{{a}_{2}}S$

B)
$ZnS\,>\,N{{a}_{2}}S\,\,>\,CuS$

C)
$N{{a}_{2}}S\,\,>\,CuS\,>ZnS$

D)
$N{{a}_{2}}S\,\,>\,ZnS\,>\,CuS$

• question_answer64) $Xe{{F}_{2}}$ is structural with                                                                                     [NEET 2013]

A)
$Te{{F}_{2}}$

B)
$lCl_{2}^{-}$

C)
$SbC{{l}_{3}}$

D)
$BaC{{l}_{2}}$

• question_answer65) Which one of the following molecules contain no $\text{ }\!\!\pi\!\!\text{ -}$bond?                             [NEET 2013]

A)
$C{{O}_{2}}$

B)
${{H}_{2}}O$

C)
$S{{O}_{2}}$

D)
$N{{O}_{2}}$

• question_answer66) Which of the following is a polar molecule?                                                                         [NEET 2013]

A)
$B{{F}_{3}}$

B)
$S{{F}_{4}}$

C)
$Si{{F}_{4}}$

D)
$Xe{{F}_{4}}$

A)
6 p-orbitals and 6 unpaired electrons

B)
7 p-orbitals and 6 unpaired electrons

C)
7 p-orbitals and 7 unpaired electrons

D)
6 p-orbitals and 7 unpaired electrons

• question_answer68) Which of the following molecules has the maximum dipole moment?                                            [AIPMT 2014]

A)
$C{{O}_{2}}$

B)
$C{{H}_{4}}$

C)
$N{{H}_{3}}$

D)
$N{{F}_{3}}$

• question_answer69) Which one of the following species has plane triangular shape?                                              [AIPMT 2014]

A)
${{N}_{3}}$

B)
$NO_{3}^{-}$

C)
$N{{O}_{2}}$

D)
$C{{O}_{2}}$

• question_answer70) Which of the following species contains equal number of $\sigma$ and $\pi$-bonds?                         [NEET 2015 ]

A)
$HCO_{3}^{-}$

B)
$Xe{{O}_{4}}$

C)
${{(CN)}_{2}}$

D)
$C{{H}_{2}}{{(CN)}_{2}}$

• question_answer71) Which of the following pairs of ions are isoelectronic and isostructural?                                   [NEET 2015]

A)
$CO_{3}^{2-},SO_{3}^{2-}$

B)
$ClO_{3}^{-},\,CO_{3}^{2-}$

C)
$SO_{3}^{2-},NO_{3}^{-}$

D)
$ClO_{3}^{-},SO_{3}^{2-}$

• question_answer72) Which of the following options represents the correct bond order?                                           [NEET 2015 ]

A)
$O_{2}^{-}>{{O}_{2}}>O_{2}^{+}$

B)
$O_{2}^{-}<{{O}_{2}}<O_{2}^{+}$

C)
$O_{2}^{-}>{{O}_{2}}<O_{2}^{+}$

D)
$O_{2}^{-}<{{O}_{2}}>O_{2}^{+}$

• question_answer73) Maximum bond angle at nitrogen is present in which of the following?                                                [NEET 2015 ]

A)
$N{{O}_{2}}$

B)
$NO_{2}^{-}$

C)
$NO_{2}^{+}$

D)
$NO_{3}^{-}$

• question_answer74) The correct bond order in the following species is                                                                     [NEET 2015 ]

A)
$O_{2}^{2+}>O_{2}^{+}>O_{2}^{-}$

B)
$O_{2}^{2+}<O_{2}^{-}<O_{2}^{+}$

C)
$O_{2}^{+}>O_{2}^{-}<O_{2}^{2+}$

D)
$O_{2}^{-}<O_{2}^{+}>O_{2}^{2+}$

• question_answer75)  The total number of $\pi -$bond electrons in the following structure is                                        [NEET 2015]

A)
4

B)
8

C)
12

D)
16

• question_answer76) .In which of the following pairs, both the species are not isostructural?                        [NEET 2015 (Re)]

A)
$SiC{{l}_{4}},PCl_{4}^{+}$

B)
Diamond, carbide

C)
$N{{H}_{3}},P{{H}_{3}}$

D)
$Xe{{F}_{4}},Xe{{O}_{4}}$

• question_answer77) Decreasing order of stability of ${{O}_{2}},O_{2}^{-},O_{2}^{+}$ and $O_{2}^{2-}$is          [NEET 2015 (Re)]

A)
$O_{2}^{+}>{{O}_{2}}>O_{2}^{-}>O_{2}^{2-}$

B)
$O_{2}^{2-}>O_{2}^{-}>{{O}_{2}}>O_{2}^{+}$

C)
${{O}_{2}}>O_{2}^{+}>O_{2}^{2-}>O_{2}^{-}$

D)
$O_{2}^{-}>O_{2}^{2-}>O_{2}^{+}>{{O}_{2}}$

• question_answer78) Consider the molecules $C{{H}_{4}},N{{H}_{3}}$ and ${{H}_{2}}O$. Which of the given statements is false?       [NEET - 2016]

A)
The $HCH$ bond angle in $C{{H}_{4}},$ the $HN$bond angle in $N{{H}_{3}},$ and the $HOH$ bond angle in ${{H}_{2}}O$ are all greater than ${{90}^{o}}$

B)
The $HOH$ bond angle in ${{H}_{2}}O$ is larger than the $HCH$ bond angle in $C{{H}_{4}}$

C)
The $HOH$ bond angle in ${{H}_{2}}O$ is smaller than the x$HNH$ bond angle in $N{{H}_{3}}$

D)
The $HCH$ bond angle in $C{{H}_{4}}$ is larger than the $HNH$ bond angle in $N{{H}_{3}}$

• question_answer79) Predict the correct order among the following:                                                         [NEET - 2016]

A)
lone pair- lone pair > lone pair - bond pair bond pair - bond pair

B)
lone pair - lone pair > bond pair - bond pair lone pair - bond pair

C)
bond pair - bond pair > lone pair - bond  pair lone pair - lone pair

D)
lone pair - bond pair > bond pair - bond pair lone pair - lone pair

• question_answer80)  Match the compounds given in column I with the hybridisation and shape given in column II and mark the correct option.                                                                                                                                                  [NEET - 2016]
 Column-I Column -II [a] $Xe{{F}_{6}}$ (i) Distorted octahedral [b] $Xe{{O}_{3}}$ (ii) Square planar [c] $XeO{{F}_{4}}$ (iii) Pyramidal [d] $Xe{{F}_{4}}$ (iv) Square pyramidal
Code :-

A)
 [a] (i) (iii) (iv) (ii)

B)
 [b] (i) (ii) (iv) (iii)

C)
 [c] (iv) (iii) (i) (ii)

D)
 [d] (iv) (i) (ii) (iii)

• question_answer81) The pair of electron in the given carbanion, $C{{H}_{3}}C\equiv {{C}^{\,O-}},$ is present in which of the following orbitals?                                                                                                                                     [NEET - 2016]

A)
2p

B)
$s{{p}^{3}}$

C)
$s{{p}^{2}}$

D)
sp

• question_answer82) Which of the following pairs of compounds is isoelectronic and isostructural?   [NEET-2017]

A)
$I{{F}_{3}},Xe{{F}_{2}}$

B)
$BeC{{l}_{2}},Xe{{F}_{2}}$

C)
$Te{{l}_{2}},Xe{{F}_{2}}$

D)
$IBr_{2}^{-},Xe{{F}_{2}}$

• question_answer83)  Match the interhalogen compounds of column I with the geometry in column II and assign the correct code [NEET-2017] Column-I Column -II [a] $XX'$ (i) T-shape [b] $XX_{3}^{'}$ (ii) Pentagonal bipyramidal [c] $XX_{5}^{'}$ (iii) Linear [d] $XX_{7}^{'}$ (iv) Square-pyramidal (v) Tetrahedral
Code:

A)
 [a] (iv) (iii) (ii) (i)

B)
 [b] (iii) (iv) (i) (ii)

C)
 [c] (iii) (i) (iv) (ii)

D)
 [d] (v) (iv) (iii) (ii)

• question_answer84) The species, having bond angles of ${{120}^{o}}$ is                                                       [NEET-2017]

A)
$BC{{l}_{3}}$

B)
$P{{H}_{3}}$

C)
$CI{{F}_{3}}$

D)
$NC{{l}_{3}}$

• question_answer85) Which one of the following pairs of species have the same bond order?                                               [NEET-2017]

A)
${{N}_{2}}O_{2}^{-}$

B)
$CO,NO$

C)
${{O}_{2}},N{{O}^{+}}$

D)
$C{{N}^{-}},CO$

• question_answer86) In the structure of $\text{Cl}{{\text{F}}_{\text{3}}}$, the number of lone pair of electrons on central atom $\text{ }\!\!'\!\!\text{ Cl }\!\!'\!\!\text{ }$ is                                                                               [NEET - 2018]

A)
Four

B)
Two

C)
One

D)
Three

• question_answer87) Which of the following molecules represents the order of hybridisation $\text{s}{{\text{p}}^{\text{2}}}\text{, s}{{\text{p}}^{\text{2}}}\text{, sp, sp}$from left to right atoms?                           [NEET - 2018]

A)
$\text{C}{{\text{H}}_{\text{2}}}\text{=CH-CH=C}{{\text{H}}_{\text{2}}}$

B)
$\text{C}{{\text{H}}_{\text{2}}}\text{=CH-C}\equiv \text{CH}$

C)
$\text{HC}\equiv \text{C-C}\equiv \text{CH}$

D)
$\text{C}{{\text{H}}_{\text{3}}}\text{-CH=CH-C}{{\text{H}}_{\text{3}}}$

• question_answer88)  Consider the following species : $\text{C}{{\text{N}}^{\text{+}}}\text{, C}{{\text{N}}^{\text{--}}}\text{, NO and CN}$ Which one of these will have the highest bond order?                                                          [NEET - 2018]

A)
$\text{C}{{\text{N}}^{\text{+}}}$

B)
$\text{C}{{\text{N}}^{\text{--}}}$

C)
NO

D)
CN

• question_answer89) Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is   $1{{s}^{2}}\text{ }2{{s}^{2}}\text{ }2{{p}^{3}}$, the simplest formula for this compound is                                                                                                                                                              [NEET - 2018]

A)
$\text{M}{{\text{g}}_{\text{2}}}\text{X}$

B)
$\text{Mg}{{\text{X}}_{2}}$

C)
$\text{M}{{\text{g}}_{2}}{{\text{X}}_{3}}$

D)
$\text{M}{{\text{g}}_{3}}{{\text{X}}_{2}}$

• question_answer90) Which of the following diatomic molecular species has only $\pi$ bonds according to Molecular Orbital Theory?                                                                                                                               [NEET 2019]

A)
${{C}_{2}}$

B)
$B{{e}_{2}}$

C)
${{O}_{2}}$

D)
${{N}_{2}}$

• question_answer91) Which of the following set of molecules will have zero dipole moment?                       [NEET 2020]

A)
Boron trifluoride, hydrogen fluoride, carbon dioxide, 1, 3-dichlorobenzene

B)
Nitrogen trifluoride, beryllium difluoride, water, 1, 3-dichlorobenzene

C)
Boron trifluoride, beryllium difluoride, carbon dioxide, 1, 4-dichlorobenzene

D)
Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene

• question_answer92) Identify a molecule which does not exist.                                                                            [NEET 2020]

A)
$L{{i}_{2}}$

B)
${{C}_{2}}$

C)
${{O}_{2}}$

D)
$H{{e}_{2}}$