Chemical Bonding Practice Questions
HSC/SSC (Bangladesh) · HSC Chemistry · 138 free MCQs with instant results and detailed explanations.
138
Total
38
Easy
67
Medium
33
Hard
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Sample Questions from Chemical Bonding
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Q1
Easy
Which of the following compounds is formed by the transfer of electrons?
A.
Cl2
B.
NaCl
C.
CH4
D.
CO2
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Correct Answer: B
Sodium chloride (NaCl) is formed by the transfer of electrons from sodium to chlorine, leading to the formation of positive and negative ions that attract each other.
Q2
Easy
Which of the following correctly describes a covalent bond?
A.
A bond formed by the transfer of electrons.
B.
A bond formed by the sharing of electron pairs.
C.
A bond that involves only metal atoms.
D.
A bond that does not involve any electrons.
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Correct Answer: B
A covalent bond is characterized by the sharing of electron pairs between atoms, allowing them to attain stable electron configurations.
Q3
Easy
Which type of bonding is present in sodium chloride (NaCl)?
A.
Covalent bonding
B.
Ionic bonding
C.
Metallic bonding
D.
Hydrogen bonding
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Correct Answer: B
Sodium chloride (NaCl) is formed by ionic bonding, which occurs due to the transfer of an electron from sodium to chlorine, resulting in the formation of positively and negatively charged ions.
Q4
Medium
What is the shape of a molecule with four electron pairs around the central atom and no lone pairs?
A.
Bent
B.
Tetrahedral
C.
Trigonal planar
D.
Octahedral
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Correct Answer: B
A molecule with four electron pairs around the central atom and no lone pairs adopts a tetrahedral shape due to the specific geometry that minimizes repulsion between the electron pairs.
Q5
Medium
Which of the following compounds contains a coordinate bond?
A.
NaCl
B.
NH4Cl
C.
H2O
D.
CO2
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Correct Answer: B
In NH4Cl, the ammonium ion (NH4+) is formed through a coordinate bond where one atom donates both electrons to form the bond, demonstrating the concept of coordination.
Q6
Medium
Which type of hybridization occurs in ethylene (C2H4)?
A.
sp
B.
sp2
C.
sp3
D.
sp3d
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Correct Answer: B
Ethylene (C2H4) exhibits sp2 hybridization where one s orbital and two p orbitals mix to form three sp2 hybrid orbitals, which are used to form sigma bonds.
Q7
Medium
Which of the following molecules has the highest electronegativity difference between its atoms?
A.
HCl
B.
NaCl
C.
CH4
D.
CO2
Show Answer & Explanation
Correct Answer: B
NaCl has the highest electronegativity difference between sodium (Na) and chlorine (Cl), leading to a strong ionic bond, while the other options have smaller differences.
Q8
Hard
Which of the following compounds exhibits ionic bonding due to significant electronegativity difference between its constituent elements?
A.
NaCl
B.
CO2
C.
CH4
D.
H2O
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Correct Answer: A
NaCl exhibits ionic bonding because sodium (Na) has a low electronegativity and chlorine (Cl) has a high electronegativity, resulting in the complete transfer of an electron from Na to Cl.
Q9
Hard
In a molecule of sulfur hexafluoride (SF6), what type of hybridization occurs in the central sulfur atom?
A.
sp3d2
B.
sp3
C.
sp2
D.
d2sp3
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Correct Answer: A
The hybridization of the central sulfur atom in SF6 is sp3d2, which involves one s, three p, and two d orbitals to accommodate six bonding pairs of electrons.
Q10
Hard
Which of the following statements accurately describes the hybridization involved in the formation of ethylene (C2H4)?
A.
Both carbon atoms undergo sp3 hybridization.
B.
Both carbon atoms undergo sp2 hybridization.
C.
One carbon atom undergoes sp2 and the other sp3 hybridization.
D.
Both carbon atoms undergo sp hybridization.
Show Answer & Explanation
Correct Answer: B
In ethylene (C2H4), each carbon atom is bonded to two hydrogens and the other carbon atom, requiring three sigma bonds. This configuration is achieved through sp2 hybridization, where one s and two p orbitals mix to form three equivalent sp2 hybrid orbitals, leaving one unhybridized p orbital for the pi bond.
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Chemical Bonding — HSC/SSC (Bangladesh) HSC Chemistry Practice Questions Online
This page contains 138 practice MCQs for the chapter Chemical Bonding in HSC/SSC (Bangladesh) HSC Chemistry. The questions are organized by difficulty — 38 easy, 67 medium, 33 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.