Basic Wastewater Operator Practice Exam 2025 – All-in-One Guide to Master Your Certification!

Question: 1 / 400

What is the chemical formula for sulfuric acid?

HNO3

HCl

NaOH

H2SO4

Sulfuric acid is a strong acid with the chemical formula H2SO4. It consists of two hydrogen (H) atoms, one sulfur (S) atom, and four oxygen (O) atoms. This structure contributes to its highly corrosive nature and versatility in various chemical reactions, making it one of the most important industrial chemicals.

In contrast, other options represent different compounds: HNO3 is nitric acid, effective in nitration and metal etching; HCl is hydrochloric acid, commonly used in cleaning and pH adjustment; and NaOH is sodium hydroxide, a strong base used in soap-making and other processes. Understanding these distinctions is critical for wastewater treatment operations, as the handling and implications of each chemical differ significantly.

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