Latent fingerprints, which are invisible to the naked eye, are made visible using methods like iodine fuming. This technique involves exposing the surface to iodine vapors, which react with oils and sweat residues in the fingerprint, creating a temporary visual impression. Neutron Activation Analysis and casting are unrelated to fingerprint development.
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: