Chemical Bonding – Ionic and Covalent Bonds MCQs

1. What type of bond is formed when electrons are transferred from one atom to another?
(A) Covalent bond
(B) Metallic bond
(C) Ionic bond
(D) Hydrogen bond

2. A covalent bond involves the:
(A) Transfer of electrons
(B) Sharing of protons
(C) Sharing of electrons
(D) Loss of neutrons

3. Which of the following compounds contains an ionic bond?
(A) H₂O
(B) CO₂
(C) NaCl
(D) CH₄

4. Which type of elements typically form covalent bonds?
(A) Metals only
(B) Nonmetals only
(C) Metals and metalloids
(D) Metals and nonmetals

5. What is the result of a covalent bond between two atoms?
(A) A positively charged ion
(B) A negatively charged ion
(C) A molecule
(D) A crystal lattice

6. Which of the following is a characteristic of ionic compounds?
(A) Low melting point
(B) Poor electrical conductivity in molten form
(C) Generally soluble in non-polar solvents
(D) High melting and boiling points

7. Which of the following is a property of covalent compounds?
(A) Good conductor in solid state
(B) High melting point
(C) Exist as gases, liquids, or soft solids
(D) Form crystal lattices

8. In an ionic bond, the metal atom:
(A) Gains electrons
(B) Shares electrons
(C) Loses electrons
(D) Does not react

9. Which of the following best describes a polar covalent bond?
(A) Equal sharing of electrons
(B) Unequal sharing of electrons
(C) Complete transfer of electrons
(D) No electron interaction

10. What kind of bond is formed between two hydrogen atoms?
(A) Polar covalent
(B) Nonpolar covalent
(C) Ionic
(D) Metallic