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Latent fingerprints can be detected by

Question and options

Latent fingerprints can be detected by
  1. Benzidine test
  2. Brentamine fast blue test
  3. Isoenzyme marker
  4. Ninhydrin reagent

Answer and explanation

Correct answer: D - Ninhydrin reagent
Ninhydrin reacts with amino acids in sweat residues to develop latent fingerprints on porous surfaces. Benzidine is a blood test, Brentamine fast blue a seminal acid phosphatase test.

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