Question

Formula H₂O is of the chemical compound –

• A. Air
• B. Water
• C. Earth
• D. None of these

Hint:

H₂O = Water (2 Hydrogen + 1 Oxygen) CO₂ = Carbon Dioxide NaCl = Salt CH₄ = Methane NH₃ = Ammonia Remember: The subscript tells the number of atoms of that element in one molecule.

Answer 1

The Correct Option is B

The question asks about the chemical compound represented by the formula H₂O. Understanding the molecular structure of compounds is vital in chemistry, particularly in identifying everyday substances.

H₂O is a chemical formula composed of two hydrogen (H) atoms and one oxygen (O) atom. This combination forms a single molecule of water. Hence, the correct answer is "Water."

Let's examine why the other options are incorrect:

• Air: Air is a mixture of gases, primarily nitrogen (N) and oxygen (O), along with small amounts of argon (Ar), carbon dioxide (CO₂), and other gases. It does not have a fixed chemical formula.
• Earth: The term "earth" refers to the planet itself or soil, consisting of various minerals and compounds. It has no singular chemical formula.
• None of these: This option is incorrect since H₂O corresponds to water.

Thus, the correct answer is "Water," represented by the formula H₂O.