Engineering Entrance Sample Papers

Chemical Bonding Questions Bank for JEE

Chemical Bonding and Molecular Structure Question Bank

Questions on Chemical Bonding for Practice

Question 1
Number of sigma bonds in P4O10  is
A
16
B
17
C
7
D
6
Question 2
Percentage of s-character in sp3 hybrid orbital is
A
50
B
25
C
75
D
66
Question 3
As compared to pure atomic orbitals, hybrid orbitals have
A
Same energy
B
Low energy
C
None of these
D
High energy
Question 4
Which of the following molecules will show dipole moment?
A
Chloroform
B
Carbon dioxide
C
Carbon tetrachloride
D
Methane
Question 5
The geometry of sulphur trioxide molecule is
A
Pyramidal
B
Square planar
C
Tetrahedral
D
Trigonal planar
Question 6
Sodium chloride is an ionic compound whereas hydrogen chloride is a gas because
A
Sodium is reactive
B
Covalent bond is stronger than ionic bond
C
Hydrogen chloride is a gas
D
Covalent bond is weaker than ionic bond
Question 7
The electronegativity of C, H, O, N and S are 2.5, 2.1, 3.5, 3.0 and 2.5 respectively. Which of the following bond is most polar
A
O – H
B
C – H
C
N – H
D
S – H
Question 8
In the formation of NaCl from Na and Cl

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A
Sodium loses electron and chlorine accepts electron
B
Sodium and chlorine both give electrons
C
Sodium and chlorine both accept electrons
D
Sodium accepts electron and chlorine loses electron
Question 9
According to Fajan’s rule, covalent bond is favoured by
A
Large cation and small anion
B
Small cation and large anion
C
Large cation and large anion
D
Small cation and small anion
Question 10
Which one of the following statements is true for ammonium ion?
A
H atoms are situated at the corners of a square
B
H atoms are situated at the corners of a tetrahedron
C
All bonds are coordinate covalent
D
All bonds are ionic
Question 11
Which among the following elements has the tendency to form covalent compounds?
A
Be
B
Mg
C
Ba
D
Ca
Question 12
Which one in the following contains ionic as well as covalent bond?
A
KCN
B
HCl
C
KCl
D
CCl
Question 13
The solution of sugar in water contains

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A
Free ions
B
Free molecules
C
Free atoms and free molecules
D
Free atoms
Question 14
A electrovalent compound is made up of
A
Neutral atoms
B
Electrically charged atoms or group of atoms
C
Electrically charged molecules
D
Neutral molecules
Question 15
The percentage s-character of the hybrid orbitals in methane, ethene and ethyne are respectively
A
50, 75, 100
B
25, 50, 75
C
25, 33, 50
D
10, 20, 40
Question 16
The main reaction during electrovalent bond formation is
A
Redox reaction
B
Addition reaction
C
Elimination reaction
D
Substitution reaction
Question 17
The bond that exists between NH3 and BF3 is called
A
Hydrogen
B
Coordinate
C
Electrovalent
D
Covalent
Question 18
The dipole moment is zero for the molecule

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A
Boron trifluoride
B
Water
C
Sulphur dioxide
D
Ammonia
Question 19
XeF2  molecule is

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A
Square planar
B
Pyramidal
C
Triangular planar
D
Linear
Question 20
The valency of phosphorus in H3PO4 is
A
1
B
4
C
5
D
2
There are 20 questions to complete.

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