MDCAT Chemistry MCQ #418

A biology lab technician prepares a specimen for preservation using a 40% aqueous solution of formaldehyde. What is this industrial mixture called?

MDCAT Chemistry MCQ #418

  1. Question 1

    Q1. A biology lab technician prepares a specimen for preservation using a 40% aqueous solution of formaldehyde. What is this industrial mixture called?

    • A) Paraformaldehyde
    • B) Methanoic acid
    • C) Methylated spirit
    • D) Formalin

    Answer: Formalin

    Explanation: Formalin is specifically a 40% aqueous solution of formaldehyde. Paraformaldehyde is the solid polymer, often mistaken for the liquid solution.