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  • Electrology Licensing Exam
  • Formaldehyde is an active gas found in what substance?
Multiple choice

Formaldehyde is an active gas found in what substance?

  1. lye

  2. sodium hydroxide

  3. hydrochloric acid

  4. formalin

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Formalin is a solution of formaldehyde gas dissolved in water. It is commonly used as a disinfectant and preservative.

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