Silver nitrate reacts with sodium chloride in latent fingerprint sweat residues, forming silver chloride. Ultraviolet light exposure darkens the silver chloride, revealing the fingerprint. This technique is especially effective on porous surfaces.
Match the LIST-I with LIST-II
| LIST-I | LIST-II |
|---|---|
| A. Ridges | III. The raised portion of the friction skin of the fingers |
| B. Type Lines | I. Two most inner ridges which start parallel, diverge and surround or tend to surround the pattern area |
| C. Delta | IV. The ridge characteristics nearest to the point of divergence of type lines |
| D. Enclosure | II. A single ridge bifurcates and reunites to enclose some space |