Chemical Bonding and Molecular Structure

115 questions · Chemistry · NEET

Chemical Bonding and Molecular Structure

115 questions · Chemistry · NEET

Match List-I with List-II Choose the correct answer from the options given below : Includes table2025 · Q104 · MCQ
Identify the correct orders against the property mentioned A. $H_{2} O > NH_{3} > CHCl_{3}$ -dipole moment B. $XeF_{4} > XeO_{3} > XeF_{2}$ - number of lone pairs on central atom C. $O - H > C - H > N - O -$ …2025 · Q122 · MCQ
Given below are two statements : Statement I: A hypothetical diatomic molecule with bond order zero is quite stable. Statement II: As bond order increases, the bond length increases. In the light of the above statements, choose the most…2025 · Q95 · MCQ
Match List I with List II. Choose the correct answer from the options given below : Includes table2024 · Q101 · MCQ
Given below are two statements: Statement I: The boiling point of hydrides of Group 16 elements follow the order $H_{2} O > H_{2} Te > H_{2} Se > H_{2} S .$ …2024 · Q103 · MCQ
Intramolecular hydrogen bonding is present in2024 · Q104 · MCQ
Match List I with List II. Choose the correct answer from the options given below: Includes table2024 · Q116 · MCQ
Identify the correct answer.2024 · Q145 · MCQ
Which of the following molecules has "NON ZERO" dipole moment value?2024 · Q105 · MCQ
Arrange the following compounds in increasing order of their solubilities in chloroform: $NaCl, CH_{3} OH$ , cyclohexane, $CH_{3} CN$ 2024 · Q112 · MCQ
Identify the incorrect statement about $PCl_{5}$ .2024 · Q113 · MCQ
Match List-I with List-II: Choose the correct answer from the options given below: Includes table2024 · Q139 · MCQ
Which one of the following represents all isoelectronic species ?2023 · Q100 · MCQ
Which one of the following statements is incorrect related to Molecular Orbital Theory?2023 · Q105 · MCQ
Given below are two statements: Statement I : Hydrated chlorides and bromides of $Ca, Sr$ and $Ba$ on heating undergo hydrolysis. Statement II : Hydrated chlorides and bromides of $Be$ and…2023 · Q113 · MCQ
The correct order of dipole moments for molecules $NH_{3}, H_{2} S, CH_{4}$ and $HF$ , is:2023 · Q94 · MCQ
Taking stability as the factor, which one of the following represents correct relationship?2023 · Q103 · MCQ
Intermolecular forces are forces of attraction and repulsion between interacting particles that will include: A. dipole - dipole forces. B. dipole - induced dipole forces C. hydrogen bonding D. covalent bonding E. dispersion forces Choose…2023 · Q104 · MCQ
Amongst the following, the total number of species NOT having eight electrons around central atom in its outer most shell, is $NH_{3}, AlCl_{3}, BeCl_{2}, CCl_{4}, PCl_{5}$ :2023 · Q91 · MCQ
The correct order of energies of molecular orbitals of $N_{2}$ molecule, is2023 · Q92 · MCQ
Match List-I with List-II : Choose the correct answer from the options given below : Includes table2022 · Q103 · MCQ
The correct order of bond angles in the following compounds/species is :2022 · Q120 · MCQ
Which amongst the following is incorrect statement?2022 · Q115 · MCQ
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A) : ICI is more reactive than I2 Reason (R) : I-CI bond is weaker than I-I bond. In the light of the above statements,…2022 · Q90 · MCQ
Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions?2022 · Q97 · MCQ
Match List - I with List - II : Choose the correct answer from the options given below. Includes table2021 · Q101 · MCQ
The correct sequence of bond enthalpy of 'C-X' bond is :2021 · Q110 · MCQ
Which of the following molecules is non-polar in nature?2021 · Q124 · MCQ
BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :2021 · Q95 · MCQ
Identify a molecule which does not exist.2020 · Q113 · MCQ
Which of the following set of molecules will have zero dipole moment?2020 · Q95 · MCQ
The number of sigma ( $σ$ ) and pi ( $π$ ) bonds in pent-2-en-4-yne is -2019 · Q103 · MCQ
The manganate and permanganate ions are tetrahedral due to :2019 · Q104 · MCQ
The correct structure of tribromooctaoxide is :2019 · Q105 · MCQ
Which of the following diatomic molecular species has only $π$ bonds according to Molecular Orbital Theory?2019 · Q106 · MCQ
Consider the following species : CN+ , CN– , NO and CN. Which one of these will have the highest bond order?2018 · Q103 · MCQ
In the structure of ClF3 , the number of lone pairs of electrons on central atom ‘Cl’ is2018 · Q105 · MCQ
The species, having bond angles of 120o is2017 · Q105 · MCQ
Which of the following pairs of compounds is isostructural ?2017 · Q106 · Multiple correct
Which one of the following pairs of species have the same bond order ?2017 · Q107 · MCQ
Predict the correct order among the following :2016 · Q103 · MCQ
Consider the molecules CH4, NH3 and H2O. Which of the given statements is false?2016 · Q104 · MCQ
Which one of the following compounds shows the presence of intramolecular hydrogen bond?2016 · Q102 · MCQ
Which of the following pairs of ions is isoelectronic and isostructural ?2016 · Q103 · Multiple correct
The hybridizations of atomic orbitals of nitrogen in NO $_{2}^{+}$ , NO $_{3}^{-}$ and NH $_{4}^{+}$ respectively are2016 · Q104 · MCQ
The correct geometry and hybridization for XeF4 are2016 · Q105 · MCQ
Among the following, which one is a wrong statement ?2016 · Q106 · MCQ
In which of the following pairs, both the species are not isostructural ?2015 · Q95 · MCQ
Decreasing order of stability of O2, O2 $-$ , O2+ and O22 $-$ is2015 · Q96 · MCQ
Which of the following species contains equal number of $σ$ - and $π$ -bonds ?2015 · Q92 · MCQ
Which of the following options represents the correct bond order ?2015 · Q96 · MCQ
Maximum bond angle at nitrogen is present in which of the following ?2015 · Q97 · MCQ
The correct bond order in the following species is2015 · Q98 · MCQ
Which of the following pairs of ions are isoelectronic and isostructural ?2015 · Q99 · MCQ
Which of the following molecules has the maximum dipole moment ?2014 · Q106 · MCQ
Which one of the following species has plane triangular shape ?2014 · Q107 · MCQ
The pair of species that has the same bond order in the following is2013 · Q106 · MCQ
In which of the following pair both the species have sp3 hybridization ?2013 · Q107 · MCQ
The outer orbitals of C in ethane molecule can be considered to be hybridized to give three equivalent sp2 orbitals. The total number of sigma $(σ)$ and pi $(π)$ bonds in ethane molecule is2013 · Q108 · MCQ
In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic.2013 · Q109 · MCQ
Which of the following is electron-deficient ?2013 · Q105 · MCQ
XeF2 is isostructural with2013 · Q106 · MCQ
Dipole-induced dipole interactions are present in which of the following pairs2013 · Q107 · MCQ
Which of the following is a polar molecule?2013 · Q108 · MCQ
Which of the following is paramagnetic?2013 · Q109 · MCQ
Identify the correct order of solubility in aqueous medium.2013 · Q98 · MCQ
During change of O2 to O $_{2}^{-}$ ion, the electron adds on which one of the following orbitals ?2012 · Q79 · MCQ
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them2012 · Q80 · MCQ
Which one of the following pairs is isostructural (i.e., having the same shape and hybridization) ?2012 · Q113 · MCQ
Which of the following species contains three bond pairs and one lone pair arround the central atom ?2012 · Q114 · MCQ
Bond order of 1.5 is shown by2012 · Q115 · MCQ
The pair of species with the same bond order is2012 · Q116 · MCQ
The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description?2011 · Q56 · MCQ
Which of the following structures is the most preferred and hence of lowest energy for SO3?2011 · Q78 · MCQ
Which of the following has the minimum bond length ?2011 · Q109 · MCQ
The correct order of increasing bond length of C $-$ H, C $-$ O, C $-$ C and C $=$ C is2011 · Q110 · MCQ
Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, NO $_{2}^{-}$ . NO $_{3}^{-}$ , NH $_{2}^{-}$ , NH $_{4}^{+}$ , SCN $-$ ?2011 · Q111 · MCQ
The pairs of species of oxygen and their magnetic behavior are noted below. Which of the following presents the correct description?2011 · Q112 · MCQ
In which of the following molecules the central atom does not have sp3 hybridization?2010 · Q70 · MCQ
Some of the properties of the two species, $N O_{3}^{-}$ and $H_{3} O^{+}$ are described below. Which one of them is current?2010 · Q71 · MCQ
Which one of the following species does not exist under normal conditions?2010 · Q121 · MCQ
In which of the following pairs of molecules/ ions, the central atoms have sp2 hybridisation ?2010 · Q122 · MCQ
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 ?2010 · Q123 · MCQ
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?2009 · Q113 · MCQ
In which of the following molecules/ions BF3, NO $_{2}^{-}$ , NH $_{2}^{-}$ and H2O, the central atom is sp2 hybridised?2009 · Q114 · MCQ
According to MO theory which of the lists ranks the nitrogen species in terms of increasing bond order ?2009 · Q115 · MCQ
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them2008 · Q110 · MCQ
The correct order of increasing bond angles in the following triatomic species is2008 · Q111 · MCQ
In which of the following pairs, the two species are isostructural?2007 · Q97 · MCQ
The correct order of C $-$ O bond length among CO, CO $_{3}^{2 -}$ , CO2 is2007 · Q98 · MCQ
The electronegativity difference berween N and F is greater than that between N and H yet the dipole moment of NH3 (1.5D) is larger than that of NF3 (0.2 D). This is because2006 · Q104 · MCQ
Which of the following is not a correct statement?2006 · Q112 · MCQ
Which of the following is not isostructural with SiCl4 ?2006 · Q113 · MCQ
Which of the following species has a linear shape?2006 · Q114 · MCQ
The correct order in which the O $-$ O bond length increases in the following is2005 · Q108 · MCQ
Which of the following molecules has trigonal planar geometry?2005 · Q109 · MCQ
The surface tension of which of the following liquid is maximum ?2005 · Q110 · MCQ
The correct sequence of increasing covalent character is represented by2005 · Q125 · MCQ
Which of the following would have a permanent dipole moment?2005 · Q97 · MCQ
In a regular octahedral molecule, MX6 the number of X $-$ M $-$ X bonds at 180o is2004 · Q102 · MCQ
Among the following, the pair in which the two species are not isostructural is2004 · Q103 · MCQ
H2O is dipolar, whereas BeF2 is not. It is because2004 · Q104 · MCQ
In BrF3 molecule, the lone pairs occupy equatorial positions to minimize2004 · Q105 · MCQ
Which one of the following statements is not correct for sigma- and pi- bonds formed between two carbon atoms?2003 · Q112 · MCQ
Which of the following has p $π$ $-$ d $π$ bonding?2002 · Q110 · MCQ
In NO3 $-$ ion number of bond pair and lone pair of electrons on nitrogen atom are2002 · Q111 · MCQ
Which of the following is isoelectronic?2002 · Q112 · MCQ
Which of the following two are isostructural?2001 · Q111 · MCQ
Nitrogen forms N2, but phosphorus does not form P2, however, it converts P4, reason is2001 · Q112 · MCQ
In which of the following bond angle is maximum ?2001 · Q113 · MCQ
In X - H --- Y, X and Y both are electronegative elements. Then2001 · Q114 · MCQ
Which compound has planar structure?2000 · Q100 · MCQ
d $π$ $-$ p $π$ bond present in2000 · Q109 · MCQ
Which species does not exhibit paramagnetism?2000 · Q110 · MCQ
Right order of dissociation energy N2 and N2+ is2000 · Q111 · MCQ