Which chemical method used to develop fingerprints on porous surfaces, such as paper or cardboard?
A. Dye-Stain
B. Ninhydrin
C. Cyanoacrylate
D. Fluorescent Powders
Answer:B
Which chemical method used to develop fingerprints on porous surfaces, such as paper or cardboard?
A. Dye-Stain B. Ninhydrin C. Cyanoacrylate D. Fluorescent Powders
Explanation: Ninhydrin is a chemical commonly used to develop fingerprints on porous surfaces, such as paper or cardboard, by reacting with the amino acids present in sweat residues to create a visible purple-colored print.