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Free download in PDF Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER and other competitive exams. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. These short solved questions or quizzes are provided by Gkseries./p>
(1)
In which of the following molecule/ion all the bonds are not equal?
[A]
XeF4
[B]
BF4-
[C]
C2H4
[D]
SiF4
(2)
Which molecule/ion out of the following does not contain unpaired electrons?
[A]
N2+
[B]
O2
[C]
O22-
[D]
B2
(3)
Number of π bonds and σ bonds in the following structure is–
[A]
6, 19
[B]
4, 20
[C]
5, 19
[D]
5, 20
(4)
Which of the following species has tetrahedral geometry?
[A]
BH4-
[B]
NH2-
[C]
CO32-
[D]
H3O+
(5)
In NO3-ion, the number of bond pairs and lone pairs of electrons on the nitrogen atom is
[A]
2, 2
[B]
3, 1
[C]
1, 3
[D]
4, 0
(6)
In PO43- ion the formal charge on the oxygen atom of P–O bond is
[A]
+ 1
[B]
– 1
[C]
– 0.75
[D]
+ 0.75
(7)
Hydrogen bonds are formed in many compounds e.g., H2O, HF, NH3. The boiling point of such compounds depends to a large extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of the boiling points of the above compounds is :
[A]
HF > H2O > NH3
[B]
H2O > HF > NH3
[C]
NH3 > HF > H2O
[D]
NH3 > H2O > HF
(8)
The types of hybrid orbitals of nitrogen in NO2+, NO3- and NH4+respectively are expected to be
[A]
sp, sp3 and sp2
[B]
sp, sp2 and sp3
[C]
sp2, sp and sp3
[D]
sp2, sp3 and sp
(9)
Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of Does the following have the highest dipole moment?
[A]
CO2
[B]
HI
[C]
H2O
[D]
SO2
(10)
Isostructural species are those which have the same shape and hybridisation. Among the given species identify the isostructural pairs.
[A]
[NF3 and BF3]
[B]
[BF4- and NH4+]
[C]
[BCl3 and BrCl3]
[D]
[NH3 and NO3-]
(11)
Which one has a pyramidal shape?
[A]
SO3
[B]
PCl3
[C]
CO32-
[D]
NO3–
(12)
pπ– dπ bonding is present in which molecule
[A]
SO32-
[B]
CO32-
[C]
NO3–
[D]
BO33-
(13)
Which of the molecules does not have a permanent dipole moment?
[A]
SO3
[B]
SO2
[C]
H2S
[D]
CS2
(14)
The formal charge and P-O bond order in PO43- respectively are
[A]
0.6, -0.75
[B]
-0.75, 1.25
[C]
1.0, -0.75
[D]
1.25, -3
(15)
Find the pair with sp2 hybridisation of the central molecule
[A]
NH3 and NO2–
[B]
BF3 and NH2–
[C]
BF3 and NO2–
[D]
NH2– and H2O
(16)
MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°?
[A]
four
[B]
two
[C]
three
[D]
six
(17)
Find the molecule with the maximum dipole moment
[A]
CH4
[B]
NH3
[C]
CO2
[D]
NF3
(18)
Sp3d2 hybridization is present in [Co(NH3)63+], find its geometry
[A]
octahedral geometry
[B]
square planar geometry
[C]
tetragonal geometry
[D]
tetrahedral geometry
Answer: octahedral geometry
(19)
Molecules are held together in a crystal by
[A]
hydrogen bond
[B]
electrostatic attraction
[C]
Van der Waal’s attraction
[D]
dipole-dipole attraction
Answer: Van der Waal’s attraction
(20)
C-O bond length is minimum in
[A]
CO2
[B]
CO32-
[C]
HCOO–
[D]
CO
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