The correct increasing bond angles order is
A)
\[B{{F}_{3}}<N{{F}_{3}}<P{{F}_{3}}<Cl{{F}_{3}}\]
done
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B)
\[Cl{{F}_{3}}<P{{F}_{3}}<N{{F}_{3}}<B{{F}_{3}}\]
done
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C)
\[B{{F}_{3}}=N{{F}_{3}}<P{{F}_{3}}<Cl{{F}_{3}}\]
done
clear
D)
\[B{{F}_{3}}<N{{F}_{3}}<P{{F}_{3}}<Cl{{F}_{3}}\]
done
clear
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Arrange the following in decreasing order of their bond length, \[{{O}_{2}},{{O}_{2}}^{+},{{O}_{2}}^{-}\] and \[O_{2}^{2-}\]
A)
\[O_{2}^{2-}<O_{2}^{-}<{{O}_{2}}+O_{2}^{+}\]
done
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B)
\[{{O}_{2}}<O_{2}^{2-}<O_{2}^{-}<O_{2}^{+}\]
done
clear
C)
\[O_{2}^{+}<O_{2}^{-}<O_{2}^{2-}<{{O}_{2}}\]
done
clear
D)
\[O_{2}^{+}<{{O}_{2}}<O_{2}^{-}<O_{2}^{2-}\]
done
clear
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The hybridization of atomic orbital's of nitrogen in \[NO_{2}^{+},NO_{2}^{-}\] and \[NH_{4}^{+}\]are
A)
\[s{{p}^{2}},\text{ }s{{p}^{3}}\] and \[s{{p}^{2}}\] respectively
done
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B)
\[sp,\text{ }s{{p}^{2}}\] and \[s{{p}^{3}}\] respectively
done
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C)
\[s{{p}^{2}},\text{ }sp\] and \[s{{p}^{3}}\] respectively
done
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D)
\[s{{p}^{2}},\text{ }s{{p}^{3}}\] and sp respectively
done
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Which of the following has been arranged in order of increasing covalent character?
A)
\[KCl<CaC{{l}_{2}}<AlC{{l}_{3}}<SnC{{l}_{4}}\]
done
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B)
\[SnC{{l}_{4}}<AlC{{l}_{3}}<CaC{{l}_{2}}<KCl\]
done
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C)
\[AlC{{l}_{3}}<CaC{{l}_{2}}<KCl<SnC{{l}_{4}}\]
done
clear
D)
\[CaC{{l}_{2}}<SnC{{l}_{4}}<KCl<AlC{{l}_{3}}\]
done
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In \[I{{F}_{3}}\] the bond angle of F - I - F is
A)
equal to \[{{90}^{o}}\]
done
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B)
less than \[{{90}^{o}}\]
done
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C)
greater than \[{{90}^{o}}\]
done
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D)
equal to \[{{90}^{o}}\]
done
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Hydrogen of 'N' in \[N(Si{{H}_{3}})\] is
A)
\[s{{p}^{2}}\]
done
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B)
\[s{{p}^{3}}\]
done
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C)
sp
done
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D)
Nis unhybridised
done
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View Answer play_arrow
Among the following species identify the isostructural pairs: \[N{{F}_{3}},NO_{3}^{-},B{{F}_{3}}{{H}_{3}}{{O}^{+}},H{{N}_{3}}\]
A)
\[[N{{F}_{3}},NO_{3}^{-}\,]\] and \[[B{{F}_{3}},\,\,{{H}_{3}}{{O}^{+}}]\]
done
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B)
\[[N{{F}_{3}},H{{N}_{3}}]\] and \[[N{{O}_{3}}^{-},B{{F}_{3}}]\]
done
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C)
\[[N{{F}_{3}},{{H}_{3}}{{O}^{+}}]\] and \[[N{{O}_{3}}^{-},B{{F}_{3}}]\]
done
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D)
\[[N{{F}_{3}},{{H}_{3}}{{O}^{+}}]\] and \[[H{{N}_{3}},B{{F}_{3}}]\]
done
clear
View Answer play_arrow
Which one of the following arrangements of molecules is correct on the basis of their dipole moments?
A)
\[B{{F}_{3}}>N{{H}_{3}}>N{{F}_{3}}\]
done
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B)
\[B{{F}_{3}}>N{{F}_{3}}>N{{H}_{3}}\]
done
clear
C)
\[N{{H}_{3}}>B{{F}_{3}}>N{{F}_{3}}\]
done
clear
D)
\[N{{H}_{3}}>N{{F}_{3}}>B{{F}_{3}}\]
done
clear
View Answer play_arrow
Among \[K{{O}_{2}},AlO_{2}^{-},Ba{{O}_{2}}\] and \[NO_{2}^{+}\] unpaired electron is present in
A)
\[NO_{2}^{+}\] and \[Ba{{O}_{2}}\]
done
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B)
\[K{{O}_{2}}\]and \[AlO_{2}^{-}\]
done
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C)
\[K{{O}_{2}}\] only
done
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D)
\[Ba{{O}_{2}}\] only
done
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View Answer play_arrow
Correctly match is:
A)
\[{{d}_{{{x}^{2}}-{{y}^{2}}}}\]atomic orbital - One nodal plane
done
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B)
\[{{p}_{y}}\] atomic orbital - Two nodal planes
done
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C)
\[{{\sigma }_{{{p}_{x}}}}\] molecular orbital - \[\Psi \](gerade)
done
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D)
\[\pi _{{{p}_{y}}}^{*}\] molecularorbital - \[\Psi \](ungerade)
done
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View Answer play_arrow
Choose the correct order of bond angle of the following
A)
x > z > y
done
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B)
x > y > z
done
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C)
z > y > x
done
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D)
y > x > z
done
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View Answer play_arrow
Which of the following is not formed?
A)
\[BeF_{4}^{2-}\]
done
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B)
\[BeF_{3}^{-}\]
done
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C)
\[BF_{4}^{-}\]
done
clear
D)
\[BF_{6}^{3-}\]
done
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View Answer play_arrow
Which one shows maximum hydrogen bonding?
A)
\[{{H}_{2}}O\]
done
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B)
\[{{H}_{2}}Se\]
done
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C)
\[{{H}_{2}}S\]
done
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D)
HF
done
clear
View Answer play_arrow
Number of lone pairs around phosphorus in \[PC{{l}_{5}},PCl_{4}^{+}\] and \[PCl_{6}^{-}\] are respectively
A)
0, 1, 2
done
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B)
0, 0, 0
done
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C)
1, 2, 3
done
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D)
0, 2, 1
done
clear
View Answer play_arrow
During steam distillation of a mixture of o-nitrophenol and p-nitrophenol
A)
vapours of o-nitrophenol are carried by steam because of its lower boiling point due to chelation.
done
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B)
vapours of o-nitrophenols are carried by steam because of its lower boiling point and solubility in steam.
done
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C)
vapours of o-nitrophenol are carried by steam because its boiling point is reduced by steam.
done
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D)
vapours of p-nitrophenol are carried by steam because of its lower boiling point.
done
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View Answer play_arrow
The bond between carbon atom (1) and carbon atom (2) in compound \[N\equiv \overset{1}{\mathop{C}}\,-\overset{2}{\mathop{C}}\,H=C{{H}_{2}}\] involves the hybrid as
A)
\[s{{p}^{2}}\] and \[s{{p}^{2}}\]
done
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B)
\[s{{p}^{3}}\] and sp
done
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C)
sp and \[s{{p}^{2}}\]
done
clear
D)
sp and sp
done
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View Answer play_arrow
Which of the following structure of \[Cl{{F}_{3}}\] is most stable?
A)
done
clear
B)
done
clear
C)
done
clear
D)
All the three have equivalent stability
done
clear
View Answer play_arrow
Which compound contains both ionic and covalent bonds?
A)
Sodium nitrate
done
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B)
Ammonia
done
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C)
Methane
done
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D)
Potassium chloride
done
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View Answer play_arrow
Which of following statement is true?
A)
Absolutely pure water does not contain any ions
done
clear
B)
London forces is directly proportional to more number of loosely held electron
done
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C)
Allene is polar due to its non-planar structure
done
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D)
\[C{{H}_{3}}OC{{H}_{3}}\] is less volatile than \[{{C}_{2}}{{H}_{5}}OH\] due to higher molecular weight.
done
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View Answer play_arrow
Correct order of bond energy is
A)
\[{{N}_{2}}>N_{2}^{+}>N_{2}^{-}>N_{2}^{2-}\]
done
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B)
\[N_{2}^{+}>N_{2}^{-}>N_{2}^{2-}>{{N}_{2}}\]
done
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C)
\[{{N}_{2}}>N_{2}^{+}=N_{2}^{-}>N_{2}^{2-}\]
done
clear
D)
\[N_{2}^{-}>N_{2}^{{}}=N_{2}^{+}>N_{2}^{2-}\]
done
clear
View Answer play_arrow
Which of the following molecule is not having perfect geometrical shape.
A)
\[PC{{l}_{3}}{{F}_{2}}\]
done
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B)
\[C{{F}_{4}}\]
done
clear
C)
\[B{{F}_{2}}Cl\]
done
clear
D)
\[{{[Si{{F}_{6}}]}^{2-}}\]
done
clear
View Answer play_arrow
The orbital picture of a triplet carbene is :
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
The molecule that will have minimum dipole moment is
A)
\[C{{H}_{3}}Cl\]
done
clear
B)
\[C{{H}_{2}}Cl\]
done
clear
C)
\[CHC{{l}_{3}}\]
done
clear
D)
\[CFC{{l}_{3}}\]
done
clear
View Answer play_arrow
Which of the following option is correct about \[N{{O}_{2}}\And Cl{{O}_{2}}?\] (i) Both are paramagnetic species (ii) Both compounds dimerised readily (iii) Both have \[s{{p}^{2}}\] hybridisation (iv) Both have Bent shape.
A)
(i), (ii)
done
clear
B)
(i), (iii), (iv)
done
clear
C)
(ii), (iii), (iv)
done
clear
D)
only (i)
done
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View Answer play_arrow
The structure of \[I{{F}_{7}}\] is
A)
pentagonal bipyramid
done
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B)
square pyramid
done
clear
C)
trigonal bipyramid
done
clear
D)
octahedral
done
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View Answer play_arrow
Which of the following is correct regarding ionization potential?
A)
\[O_{2}^{2+}>NO\]
done
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B)
\[O_{2}^{2+}<NO\]
done
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C)
\[O_{2}^{{}}<NO\]
done
clear
D)
\[O_{2}^{2+}=NO\]
done
clear
View Answer play_arrow
In which of the following sets, each member has linear shape:
A)
\[N_{3}^{-},\text{ }I_{3}^{+},\text{ }Xe{{F}_{2}}\]
done
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B)
\[NO_{2}^{+},\text{ }O_{3}^{{}},\text{ }{{C}_{2}}{{H}_{2}}\]
done
clear
C)
\[N_{3}^{-},\text{ }I_{3}^{-},\text{ }NO_{2}^{+}\]
done
clear
D)
\[BeC{{l}_{2}},\text{ }Xe{{F}_{2}},\text{ }ClO_{2}^{-}\]
done
clear
View Answer play_arrow
What is not true about ice?
A)
It has open cage like structure
done
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B)
It has less density than water
done
clear
C)
Each O atom is surrounded by 4 H atoms
done
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D)
Each O atom has four H-bonds around it
done
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View Answer play_arrow
Arrange the following compounds in increasing order of their ionic character: \[SnC{{l}_{2}},SnC{{l}_{4}},SiC{{l}_{4}},Sn{{F}_{4}},Sn{{F}_{2}}\]
A)
\[Sn{{F}_{2}}<SnC{{l}_{2}}<Sn{{F}_{4}}<SnC{{l}_{4}}<SiC{{l}_{4}}\]
done
clear
B)
\[Sn{{F}_{2}}<SnC{{l}_{2}}<Sn{{F}_{4}}<SiC{{l}_{4}}<SnC{{l}_{4}}\]
done
clear
C)
\[SiC{{l}_{4}}<SnC{{l}_{4}}<Sn{{F}_{4}}<SnC{{l}_{2}}<Sn{{F}_{2}}\]
done
clear
D)
\[SnC{{l}_{4}}<Sn{{F}_{4}}<SnC{{l}_{2}}<Sn{{F}_{2}}<SiC{{l}_{4}}\]
done
clear
View Answer play_arrow
Bond length of ethane (I), ethene (II), acetylene (III), and benzene (IV) follows the order:
A)
\[I>II>III>IV\]
done
clear
B)
\[I>II>IV>III\]
done
clear
C)
\[I>IV>II>III\]
done
clear
D)
\[III>IV>II>I\]
done
clear
View Answer play_arrow
Amongst the following, the total number of species which does/do not exist is : \[S{{F}_{6}},B{{F}_{6}}^{3-},S{{F}_{4}},O{{F}_{4}},Al{{F}_{6}}^{3-},P{{H}_{5}},PC{{l}_{5}},NC{{l}_{5}},SC{{l}_{6}}\]
A)
9
done
clear
B)
5
done
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C)
6
done
clear
D)
8
done
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View Answer play_arrow
Most favorable condition for ionic bonding are:
A)
low charge on ions, large cations, small anions
done
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B)
low charge on ions, large cations, large anions
done
clear
C)
high charge on ions, small cations, large anions
done
clear
D)
high charge on ions, large cations, small anions
done
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View Answer play_arrow
In which of the following mixtures, the London dispersion force acts as major intermolecular force of attraction?
A)
Sodium chloride and water.
done
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B)
Cyciohexane and carbontetrachloride.
done
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C)
Water and ethyl alcohol.
done
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D)
Benzene and acetone.
done
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View Answer play_arrow
Which of the following is incorrect?
A)
One of the favourable conditions for the formation of an anion is high negative value of electron gain enthalpy of an element.
done
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B)
Ionic bonds are non-directional whereas covalent bonds are directional in nature.
done
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C)
One of the favourable conditions for the formation of ionic bonds is low lattice energy.
done
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D)
Ionic compounds have high melting and boiling points and are soluble in polar solvents.
done
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View Answer play_arrow
Which combination is best explained by the coordinate covalent bond?
A)
\[{{H}^{+}}+{{H}_{2}}O\]
done
clear
B)
\[Cl+Cl\]
done
clear
C)
\[Mg+\frac{1}{2}{{O}_{2}}\]
done
clear
D)
\[{{H}_{2}}+{{I}_{2}}\]
done
clear
View Answer play_arrow