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## Chemical Bonding and Molecular Structure

### Chemistry

#### Previous Years Questions

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Which amongst the following is incorrect statement?
NEET 2022
Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions?
NEET 2022
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A) ...
NEET 2022
Which of the following molecules is non-polar in nature?
NEET 2021
The correct sequence of bond enthalpy of 'C-X' bond is :
NEET 2021
Match List - I with List - II : List - I List - II (a) $$PC{l_5}$$ (i) Squ...
NEET 2021
BF3 is planar and electron deficient compound. Hybridization and number of elements around the central atom, respectivel...
NEET 2021
Identify a molecule which does not exist.
NEET 2020 Phase 1
Which of the following set of molecules will have zero dipole moment?
NEET 2020 Phase 1
Which of the following diatomic molecular species has only $$\pi$$ bonds according to Molecular Orbital Theory?
NEET 2019
The correct structure of tribromooctaoxide is :
NEET 2019
The manganate and permanganate ions are tetrahedral due to :
NEET 2019
The number of sigma ($$\sigma$$) and pi ($$\pi$$) bonds in pent-2-en-4-yne is -
NEET 2019
In the structure of ClF3 , the number of lone pairs of electrons on central atom ‘Cl’ is
NEET 2018
Consider the following species : CN+ , CN– , NO and CN. Which one of these will have the highest bond order?...
NEET 2018
Which one of the following pairs of species have the same bond order ?
NEET 2017
The species, having bond angles of 120o is
NEET 2017
Consider the molecules CH4, NH3 and H2O. Which of the given statements is false? ...
NEET 2016 Phase 1
Predict the correct order among the following :
NEET 2016 Phase 1
Among the following, which one is a wrong statement ?
NEET 2016 Phase 2
The correct geometry and hybridization for XeF4 are
NEET 2016 Phase 2
The hybridizations of atomic orbitals of nitrogen in NO$$_2^ +$$, NO$$_3^ -$$&nbsp;&nbsp;and&nbsp;&nbsp;NH$$_4^ +$$&n...
NEET 2016 Phase 2
Which one of the following compounds shows the presence of intramolecular hydrogen bond?
NEET 2016 Phase 2
Which of the following species contains equal number of $$\sigma$$- and $$\pi$$-bonds ?
AIPMT 2015 Cancelled Paper
Maximum bond angle at nitrogen is present in which of the following ?
AIPMT 2015 Cancelled Paper
Which of the following pairs of ions are isoelectronic and isostructural ?
AIPMT 2015 Cancelled Paper
The correct bond order in the following species is
AIPMT 2015 Cancelled Paper
Decreasing order of stability of O2, O2$$-$$, O2+ and O22$$-$$ is...
AIPMT 2015
Which of the following options represents the correct bond order ?
AIPMT 2015 Cancelled Paper
In which of the following pairs, both the species are not isostructural ?
AIPMT 2015
Which one of the following species has plane triangular shape ?
AIPMT 2014
Which of the following molecules has the maximum dipole moment ?
AIPMT 2014
Identify the correct order of solubility in aqueous medium.
NEET 2013
In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramag...
NEET 2013 (Karnataka)
The outer orbitals of C in ethane molecule can be considered to be hybridized to give three equivalent sp2 orbitals. The...
NEET 2013 (Karnataka)
In which of the following pair both the species have sp3 hybridization ?
NEET 2013 (Karnataka)
Which of the following is paramagnetic?
NEET 2013
Dipole-induced dipole interactions are present in which of the following pairs
NEET 2013
The pair of species that has the same bond order in the following is
NEET 2013 (Karnataka)
Which of the following is a polar molecule?
NEET 2013
XeF2 is isostructural with
NEET 2013
Which of the following is electron-deficient ?
NEET 2013
During change of O2 to O$$_2^{ - }$$ ion, the electron adds on which one of the following orbitals ?
AIPMT 2012 Mains
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them
AIPMT 2012 Mains
The pair of species with the same bond order is
AIPMT 2012 Prelims
Bond order of 1.5 is shown by
AIPMT 2012 Prelims
Which of the following species contains three bond pairs and one lone pair arround the central atom ?
AIPMT 2012 Prelims
Which one of the following pairs is isostructural (i.e., having the same shape and hybridization) ?
AIPMT 2012 Prelims
The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correc...
AIPMT 2011 Mains
Which of the following structures is the most preferred and hence of lowest energy for SO3?
AIPMT 2011 Mains
The pairs of species of oxygen and their magnetic behavior are noted below. Which of the following presents the correct ...
AIPMT 2011 Prelims
Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of or...
AIPMT 2011 Prelims
The correct order of increasing bond length of C $$-$$ H, C $$-$$ O, C $$-$$ C and C$$=$$C is
AIPMT 2011 Prelims
Which of the following has the minimum bond length ?
AIPMT 2011 Prelims
Some of the properties of the two species, $$NO_3^ -$$ and $${H_3}{O^ + }$$ are described below. Which one of them i...
AIPMT 2010 Mains
In which of the following molecules the central atom does not have sp3 hybridization?
AIPMT 2010 Mains
In which one of the following species the central atom has the type of hybridization which is not the same as that prese...
AIPMT 2010 Prelims
In which of the following pairs of molecules/ ions, the central atoms have sp2 hybridisation ?
AIPMT 2010 Prelims
Which one of the following species does not exist under normal conditions?
AIPMT 2010 Prelims
In which of the following molecules/ions BF3, NO$$_2^ -$$, NH$$_2^ -$$ and H2O, the central atom is sp2 hybridised? ...
AIPMT 2009
According to MO theory which of the lists ranks the nitrogen species in terms of increasing bond order ?
AIPMT 2009
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?
AIPMT 2009
The correct order of increasing bond angles in the following triatomic species is
AIPMT 2008
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them
AIPMT 2008
The correct order of C $$-$$ O bond length among CO, CO$${_3^{2 - }}$$, CO2 is
AIPMT 2007
In which of the following pairs, the two species are isostructural?
AIPMT 2007
Which of the following species has a linear shape?
AIPMT 2006
Which of the following is not isostructural with SiCl4 ?
AIPMT 2006
Which of the following is not a correct statement?
AIPMT 2006
The correct sequence of increasing covalent character is represented by
AIPMT 2005
The surface tension of which of the following liquid is maximum ?
AIPMT 2005
Which of the following molecules has trigonal planar geometry?
AIPMT 2005
The correct order in which the O $$-$$ O bond length increases in the following is
AIPMT 2005
In BrF3 molecule, the lone pairs occupy equatorial positions to minimize
AIPMT 2004
H2O is dipolar, whereas BeF2 is not. It is because
AIPMT 2004
Among the following, the pair in which the two species are not isostructural is
AIPMT 2004
In a regular octahedral molecule, MX6 the number of X $$-$$ M $$-$$ X bonds at 180o is
AIPMT 2004
Which one of the following statements is not correct for sigma- and pi- bonds formed between two carbon atoms?
AIPMT 2003
Which of the following is isoelectronic?
AIPMT 2002
In NO3$$-$$ ion number of bond pair and lone pair of electrons on nitrogen atom are
AIPMT 2002
Which of the following has p$$\pi$$ $$-$$ d$$\pi$$ bonding?
AIPMT 2002
Nitrogen forms N2, but phosphorus does not form P2, however, it converts P4, reason is
AIPMT 2001
In which of the following bond angle is maximum ?
AIPMT 2001
In X - H --- Y, X and Y both are electronegative elements. Then
AIPMT 2001
Which of the following two are isostructural?
AIPMT 2001
Right order of dissociation energy N2 and N2+ is
AIPMT 2000
Which species does not exhibit paramagnetism?
AIPMT 2000
d$$\pi$$ $$-$$ p$$\pi$$ bond present in
AIPMT 2000

## MCQ (More than One Correct Answer)

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Which of the following pairs of compounds is isostructural ?
NEET 2017
Which of the following pairs of ions is isoelectronic and isostructural ?
NEET 2016 Phase 2

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