NEET
Chemistry
Chemical Bonding and Molecular Structure
Previous Years Questions

Match List-I with List-II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-fami...
The correct order of bond angles in the following compounds/species is :
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...
Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions?
Which amongst the following is incorrect statement?
BF3 is planar and electron deficient compound. Hybridization and number of elements around the central atom, respectively are :
Match List - I with List - II : List - I List - II (a) $$PC{l_5}$$ (i) Square pyramidal (b) ...
The correct sequence of bond enthalpy of 'C-X' bond is :
Which of the following molecules is non-polar in nature?
Which of the following set of molecules will have zero dipole moment?
Identify a molecule which does not exist.
The number of sigma ($$\sigma$$) and pi ($$\pi$$) bonds in pent-2-en-4-yne is -
The manganate and permanganate ions are tetrahedral due to :
The correct structure of tribromooctaoxide is :
Which of the following diatomic molecular species has only $$\pi$$ bonds according to Molecular Orbital Theory?
Consider the following species : CN+ , CN– , NO and CN. Which one of these will have the highest bond order?
In the structure of ClF3 , the number of lone pairs of electrons on central atom ‘Cl’ is
The species, having bond angles of 120o is
Which one of the following pairs of species have the same bond order ?
Which one of the following compounds shows the presence of intramolecular hydrogen bond?
The hybridizations of atomic orbitals of nitrogen in NO$$_2^ +$$, NO$$_3^ -$$  and  NH$$_4^ +$$  respectively are
The correct geometry and hybridization for XeF4 are
Among the following, which one is a wrong statement ?
Predict the correct order among the following :
Consider the molecules CH4, NH3 and H2O. Which of the given statements is false?
In which of the following pairs, both the species are not isostructural ?
Decreasing order of stability of O2, O2$$-$$, O2+ and O22$$-$$ is
Which of the following options represents the correct bond order ?
Maximum bond angle at nitrogen is present in which of the following ?
The correct bond order in the following species is
Which of the following pairs of ions are isoelectronic and isostructural ?
Which of the following species contains equal number of $$\sigma$$- and $$\pi$$-bonds ?
Which of the following molecules has the maximum dipole moment ?
Which one of the following species has plane triangular shape ?
The pair of species that has the same bond order in the following is
In which of the following pair both the species have sp3 hybridization ?
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 $$\left... In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic. Which of the following is electron-deficient ? XeF2 is isostructural with Dipole-induced dipole interactions are present in which of the following pairs Which of the following is a polar molecule? Which of the following is paramagnetic? Identify the correct order of solubility in aqueous medium. During change of O2 to O$$_2^{ - }$$ion, the electron adds on which one of the following orbitals ? Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them Which one of the following pairs is isostructural (i.e., having the same shape and hybridization) ? Bond order of 1.5 is shown by Which of the following species contains three bond pairs and one lone pair arround the central atom ? The pair of species with the same bond order is Which of the following structures is the most preferred and hence of lowest energy for SO3? The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description? Which of the following has the minimum bond length ? The correct order of increasing bond length of C$$-$$H, C$$-$$O, C$$-$$C and C$$=$$C is Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, NO$$_2^ - $$. NO$$_3^...
The pairs of species of oxygen and their magnetic behavior are noted below. Which of the following presents the correct description?
Some of the properties of the two species, $$NO_3^ -$$ and $${H_3}{O^ + }$$ are described below. Which one of them is current?
In which of the following molecules the central atom does not have sp3 hybridization?
In which of the following pairs of molecules/ ions, the central atoms have sp2 hybridisation ?
Which one of the following species does not exist under normal conditions?
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 ?
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?
In which of the following molecules/ions BF3, NO$$_2^ -$$, NH$$_2^ -$$ and H2O, the central atom is sp2 hybridised? ...
According to MO theory which of the lists ranks the nitrogen species in terms of increasing bond order ?
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them
The correct order of increasing bond angles in the following triatomic species is
In which of the following pairs, the two species are isostructural?
The correct order of C $$-$$ O bond length among CO, CO$${_3^{2 - }}$$, CO2 is
Which of the following is not a correct statement?
Which of the following is not isostructural with SiCl4 ?
Which of the following species has a linear shape?
The correct order in which the O $$-$$ O bond length increases in the following is
Which of the following molecules has trigonal planar geometry?
The surface tension of which of the following liquid is maximum ?
The correct sequence of increasing covalent character is represented by
In a regular octahedral molecule, MX6 the number of X $$-$$ M $$-$$ X bonds at 180o is
H2O is dipolar, whereas BeF2 is not. It is because
Among the following, the pair in which the two species are not isostructural is
In BrF3 molecule, the lone pairs occupy equatorial positions to minimize
Which one of the following statements is not correct for sigma- and pi- bonds formed between two carbon atoms?
Which of the following has p$$\pi$$ $$-$$ d$$\pi$$ bonding?
In NO3$$-$$ ion number of bond pair and lone pair of electrons on nitrogen atom are
Which of the following is isoelectronic?
Which of the following two are isostructural?
Nitrogen forms N2, but phosphorus does not form P2, however, it converts P4, reason is
In which of the following bond angle is maximum ?
In X - H --- Y, X and Y both are electronegative elements. Then
d$$\pi$$ $$-$$ p$$\pi$$ bond present in
Which species does not exhibit paramagnetism?
Right order of dissociation energy N2 and N2+ is

## MCQ (More than One Correct Answer)

Which of the following pairs of compounds is isostructural ?
Which of the following pairs of ions is isoelectronic and isostructural ?
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