1. What type of bond is formed when two atoms share a pair of electrons?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: b) Covalent bond
2. In an ionic bond, electrons are:
a) Shared equally between atoms
b) Shared unequally between atoms
c) Transferred from one atom to another
d) Delocalized over a lattice
Answer: c) Transferred from one atom to another
3. What type of bond is characterized by a “sea of electrons” that are free to move around?
a) Covalent bond
b) Ionic bond
c) Metallic bond
d) Hydrogen bond
Answer: c) Metallic bond
4. Which type of bond is typically formed between a metal and a non-metal?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: a) Ionic bond
5. What is the primary characteristic of covalent bonds?
a) Transfer of electrons
b) Sharing of electrons
c) Formation of positive and negative ions
d) Formation of a lattice structure
Answer: b) Sharing of electrons
6. Which of the following bonds is the weakest?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: d) Hydrogen bond
7. What determines the strength of a covalent bond?
a) The number of electrons shared
b) The type of metal involved
c) The size of the atoms involved
d) The lattice structure
Answer: a) The number of electrons shared
8. Which type of bond involves the attraction between positively charged metal ions and delocalized electrons?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: c) Metallic bond
9. What is the bond angle in a tetrahedral molecular geometry?
a) 90°
b) 120°
c) 180°
d) 109.5°
Answer: d) 109.5°
10. Which type of bond is formed between hydrogen and a highly electronegative atom such as fluorine, oxygen, or nitrogen?
a) Covalent bond
b) Ionic bond
c) Metallic bond
d) Hydrogen bond
Answer: d) Hydrogen bond
11. In which type of bonding do electrons move freely throughout the structure, leading to high electrical conductivity?
a) Ionic bonding
b) Covalent bonding
c) Metallic bonding
d) Hydrogen bonding
Answer: c) Metallic bonding
12. What is the main feature of an ionic bond?
a) Equal sharing of electrons
b) Transfer of electrons
c) Formation of a molecule
d) Overlapping of orbitals
Answer: b) Transfer of electrons
13. Which of the following is not a characteristic of metallic bonds?
a) High electrical conductivity
b) High melting and boiling points
c) Formation of positive ions
d) Transfer of electrons
Answer: d) Transfer of electrons
14. What type of bond is formed when two atoms share three pairs of electrons?
a) Single bond
b) Double bond
c) Triple bond
d) Quadruple bond
Answer: c) Triple bond
15. In a polar covalent bond, the electrons are:
a) Shared equally
b) Shared unequally
c) Transferred completely
d) Free to move
Answer: b) Shared unequally
16. What type of bond is present in a water molecule (H₂O)?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: b) Covalent bond
17. Which property is commonly associated with ionic compounds?
a) High melting and boiling points
b) High electrical conductivity in solid form
c) Malleability
d) Low solubility in water
Answer: a) High melting and boiling points
18. In which type of bonding do atoms achieve a full outer shell of electrons by sharing pairs of electrons?
a) Ionic bonding
b) Covalent bonding
c) Metallic bonding
d) Hydrogen bonding
Answer: b) Covalent bonding
19. What is the shape of a molecule with a central atom bonded to two other atoms with no lone pairs on the central atom?
a) Linear
b) Bent
c) Tetrahedral
d) Trigonal planar
Answer: a) Linear
20. What kind of bond occurs between two atoms with a large difference in electronegativity?
a) Covalent bond
b) Ionic bond
c) Metallic bond
d) Hydrogen bond
Answer: b) Ionic bond
21. In a covalent bond, what is the main factor that determines bond length?
a) The size of the atoms
b) The bond order
c) The number of electrons shared
d) The type of metal involved
Answer: a) The size of the atoms
22. Which bond is likely to be the shortest in a molecule?
a) Single bond
b) Double bond
c) Triple bond
d) Quadruple bond
Answer: c) Triple bond
23. What is the term for a molecule or ion that has an uneven distribution of charge, leading to a dipole moment?
a) Nonpolar
b) Polar
c) Ionic
d) Covalent
Answer: b) Polar
24. What type of bonding is present in a diamond?
a) Ionic bonding
b) Covalent bonding
c) Metallic bonding
d) Hydrogen bonding
Answer: b) Covalent bonding
25. In which type of bond do atoms share electrons equally?
a) Ionic bond
b) Polar covalent bond
c) Nonpolar covalent bond
d) Metallic bond
Answer: c) Nonpolar covalent bond
26. What type of bond is formed between two non-metal atoms with similar electronegativities?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: b) Covalent bond
27. What is the term for a bond formed by the attraction between a positive ion and the electrons of a metal lattice?
a) Covalent bond
b) Ionic bond
c) Metallic bond
d) Hydrogen bond
Answer: c) Metallic bond
28. Which type of bond involves the sharing of electrons in a “sea” of delocalized electrons?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: c) Metallic bond
29. What is the result of a covalent bond when two atoms have different electronegativities?
a) Pure covalent bond
b) Nonpolar covalent bond
c) Polar covalent bond
d) Ionic bond
Answer: c) Polar covalent bond
30. Which type of bond is characterized by the formation of a lattice of positive ions surrounded by a “sea” of electrons?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: c) Metallic bond