Multiple choice

The reagent used to detect fingerprints is

  1. N-Methylmorpholine

  2. Ninhydrin

  3. Phosgene

  4. Phosphorus tribromide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ninhydrin (2,2-Dihydroxyindane-1,3-dione) is a chemical used to detect ammonia or primary and secondary amines. Ninhydrin is most commonly used to detect fingerprints, as the terminal amines of lysine residues in peptides and proteins sloughed off in fingerprints react with ninhydrin.

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