Please be patient as the PDF generation may take upto a minute.

Which of the following is not isostructural with SiCl₄? 
1. SCl₄     
2. SO₄^{2-
3. PO₄3-}
4. NH₄⁺

In the molecular orbital diagram for ${\mathrm{O}}_2^{+}$ ion. the HOMO is :-
(1) $\sigma$ MO orbital
(2) π MO orbital
(3)  π^* MO orbital
(4) $\stackrel{*}{\sigma }$ MO orbital

A molecule having the maximum dipole moment among the following is -
1. CO₂
2. CH₄
3. NH₃
4. NF₃

XeF₂ is isostructural with : 
1. TeF₂
2. ICI₂^-
3. SbCl₃
4. BCl₃

The correct statement about carbene $\left(C{H}_2\right)$ is:
(1) In singlet carbene, carbon is $s{p}_2$-hybridized whereas in triplet carbene, carbon is sp-hybridized
(2) Triplet carbene is less stable than singlet carbene
(3) Stability of halocarbenes is: CHF>CHCL>CHBr
(4) None of the above

Which ionic compound has the largest amount of lattice energy?
$\left(a\right) NaF \left(b\right)Al{F}_3$
$\left(c\right)AIN \left(d\right)Mg{F}_2$

The incorrect order of the force of attraction among the given species is :
1. HI > HBr> ${\mathrm{Cl}}_2$
2. ${\mathrm{CCl}}_4>{\mathrm{CH}}_2{\mathrm{Cl}}_2>{\mathrm{CH}}_3\mathrm{Cl}>{\mathrm{CH}}_4$
3. n- Pentane > iso-Pentane > neo-Pentane
4. ${\mathrm{OH}}_2>\mathrm{O}{\left({\mathrm{CH}}_3\right)}_2>{\mathrm{OBr}}_2$

Inorganic benzene reacts with HCl to form a compound ${\mathrm{B}}_3{\mathrm{N}}_3{\mathrm{H}}_9{\mathrm{Cl}}_3$. The protonation occurs at:
(1) B-atom 
(2) N-atom
(3) First at B-atom then rearrangers into N-atom 
(4) First N-atom then rearrangers into B-atom 

The correct statement about hydrolysis of ${\mathrm{BCl}}_3$ and ${\mathrm{NCl}}_3$ is-
1. ${\mathrm{NCl}}_3$ is hydrolysed and gives $\mathrm{HOCl}$ but ${\mathrm{BCl}}_3$ is not hydrolysed
2. Both ${\mathrm{NCl}}_3$ and ${\mathrm{BCl}}_3$ on hydrolysis gives $\mathrm{HCl}$
3. ${\mathrm{NCl}}_3$ on hydrolysis gives $\mathrm{HOCl}$  but ${\mathrm{BCl}}_3$ gives $\mathrm{HCl}$
4. Both ${\mathrm{NCl}}_3$ and ${\mathrm{BCl}}_3$ on hydrolysis gives $\mathrm{HOCl}$

The incorrect order of boiling point is-
1. ${\mathrm{H}}_2\mathrm{O} > {\mathrm{CH}}_3\mathrm{OH}$             
2. $\mathrm{N}{\left({\mathrm{CH}}_3\right)}_3< \mathrm{NH}{\left({\mathrm{CH}}_3\right)}_2$
3. ${\mathrm{H}}_3{\mathrm{PO}}_4> {\mathrm{Me}}_3{\mathrm{PO}}_4$         
4. ${\mathrm{CH}}_3{\mathrm{N}}_3> {\mathrm{HN}}_3$

Which of the following species contains maximum number of atoms in 'XY' plane?
  $1. Xe{F}_{2 }$
$2. S{F}_6$
$3. I{F}_{3 }$
$4. All$

Select the correct statement:
(a)$HS{O}_5^{-}$ ion has one $\mathrm{S}—\mathrm{O}—\mathrm{H}$ linkage
(b) Number of $\mathrm{B}—\mathrm{O}—\mathrm{B}$ linkages in Borax is equal to number of $\mathrm{P}—\mathrm{O}—\mathrm{P}$ linkages in ${\mathrm{P}}_4{\mathrm{O}}_{10}$
(c) Hybridization of both sulphur on $\left({\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_5\right)$ (pyrosulphurous acid) is name but oxidization state of both sulphur are different
(d) Tetra -Polyphosphoric has four $\mathrm{P}—\mathrm{O}—\mathrm{P}$ and no $\mathrm{P}—\mathrm{P}$ linkage

Select the incorrect statement about ${\mathrm{N}}_2{\mathrm{F}}_{4 }\mathrm{and} {\mathrm{N}}_2{\mathrm{H}}_4$:
(i) In${\mathrm{N}}_2{\mathrm{F}}_4$, d-orbitals are contracted by electronegative fluorine atoms, but d-orbitals contaraction is not possible by H-atom in ${\mathrm{N}}_2{\mathrm{H}}_4$
(ii) The N-N bond energy in ${\mathrm{N}}_2{\mathrm{F}}_4$ is lesser than N-N bond energy in ${\mathrm{N}}_2{\mathrm{H}}_4$
(iii) The N-N bond length in ${\mathrm{N}}_2{\mathrm{F}}_4$ is more than that in ${\mathrm{N}}_2{\mathrm{H}}_4$
(iv) The N-N bond length in ${\mathrm{N}}_2{\mathrm{F}}_4$ is less than that in ${\mathrm{N}}_2{\mathrm{H}}_4$
Choose the correct code:
(a) (i),(ii) and (iii)                                        (b) (i) and (iii)
(c) (ii) and (iv)                                            (d) (ii) and (iii)

Which statement is true about the most stable Lewis structure for $C{S}_2$ ?
(1) There are no lone pairs in molecule 
(2) All bonds are double bonds 
(3) The central atom does not have an octet of electrons 
(4) A sulfur atom must be the central atom for the stucture to be stable 

If two different non axial d-orbitals having 'xz' nodal plane form $\mathrm{\pi }$ bond by overlaping each other then internuclear axis will be :
1. x         2. y
3. z         4. They don't form $\mathrm{\pi }$ bond

On the left are given decreasing orders of elements for a certain property and on the right side is given the property. The incorrect order for the given properties is:
1. ${\mathrm{AlF}}_3>\mathrm{MgO}>{\mathrm{MgF}}_2$    : Lattice energy
2. $\mathrm{Li}>\mathrm{Na}>\mathrm{Al}>\mathrm{Mg}$       : Electron affinity
3. ${\mathrm{PF}}_5>$ ${\mathrm{SF}}_6$ $>$ ${\mathrm{SiF}}_4$      : Lewis acidic character
4. ${\mathrm{SiCl}}_4>{\mathrm{SiBr}}_4$ $>{\mathrm{SiI}}_4$   : Decreasing ionic character

Cis-butene dioic acid $\stackrel{{\mathrm{K}}_{{\mathrm{a}}_1}\{-{\mathrm{H}}^{+}\}}{\rightleftharpoons }{{\mathrm{X}}^{-}}_1\stackrel{{\mathrm{K}}_{{\mathrm{a}}_2}\{-{\mathrm{H}}^{+}\}}{\rightleftharpoons }{\mathrm{X}}_2^{2-}$
Trans-butene dioic acid $\stackrel{{\mathrm{K}}_{{\mathrm{a}}_1}\text{'}\{-{\mathrm{H}}^{+}\}}{\rightleftharpoons }{{\mathrm{Y}}^{-}}_1\stackrel{{\mathrm{K}}_{{\mathrm{a}}_2}·\{-{\mathrm{H}}^{+}\}}{\rightleftharpoons }{\mathrm{Y}}_2^{2-}$
The incorrect statement regarding above the information is:
(1) ${\mathrm{X}}_2^{2-}$ species is more basic than ${\mathrm{Y}}_2^{2-}$ species 
(2) ${\mathrm{X}}_1^{-}$ species is more basic than ${\mathrm{Y}}_1^{-}$ species
(3) ${\mathrm{K}}_{\mathrm{a}1}$ is greater than $\mathrm{K}{\text{'}}_{\mathrm{a}2}$ 
(4) $\mathrm{K}{\text{'}}_{\mathrm{a}2}$ is greater than $\mathrm{K}{\text{'}}_{\mathrm{a}2}$

A diatomic molecule has a dipole moment of 1.2 D. If its bond length is equal to 10 ^-10 m , then the fraction of an electronic charge on each atom will be:
1. 42%
2. 52%
3. 37%
4. 25%

Valency is best described as:
1. Total electrons in an atom
2. Atomicity of an element
3. Oxidation number of an element
4. Combining capacity of an element

Compounds that have a maximum value of lattice energy among the following, is:
 

The correct order of covalent bond character among
LiCl, BeCl₂, BCl₃ and CCl₄, is:
1. LiCl < BeCl₂ > BCl₃ > CCl₄
2. LiCl > BeCl₂ < BCl₃ < CCl₄
3. LiCl < BeCl₂ < BCl₃ < CCl₄
4. LiCl > BeCl₂ > BCl₃ > CCl₄

Which of the following has  $\mathrm{p\pi } -\mathrm{d\pi }$ bonding?
1. ${\mathrm{NO}}_3^{-}$
2. ${\mathrm{SO}}_3^{2-}$
3. ${\mathrm{BO}}_3^{3-}$
4.${\mathrm{CO}}_3^{2-}$

The number of sigma bonds in P₄O₁₀ is 
1. 6
2. 16
3. 20
4. 7

Which of the following species contains equal number of $\mathrm{\sigma }$ and $\mathrm{\pi }$ bonds?
1. ${\mathrm{HCO}}_3^{-}$                                   
2. XeO₄
3. (CN)₂                                     
4. CH₂(CN)₂

H.O.M.O. (Highest Occupied Molecular Orbital) of CO molecular is :
(1) Non-bonding M.O. with slight antibonding character
(2) Non-bonding M.O. with slight bonding character
(3) Pure non-bonding M.O.
(4) None of the above