Iodine Fuming - Fingerprint Enhancement Technique

What state is iodine in at room temperature?

• Liquid

• Plasma

• Gas

• Solid

Why is the beaker sealed during the fingerprint development process?

• To reduce the reaction time

• To change the color of the fingerprints

• To prevent vapor escape

• To speed up the reaction

How long does it take for the iodine vapor to develop fingerprints on the paper?

• 15-20 minutes

• 1-2 minutes

• 5-10 minutes

• 30-35 minutes

What is the main purpose of using a fixing solution in fingerprint development?

• To clean the beaker

• To speed up development

• To change the fingerprint color

• To create a permanent record

What color do the fingerprints turn after applying the fixing solution?

• Red

• Brown

• Blue

• Green

What happens to the fingerprints if they are not fixed after being developed?

• They disappear completely

• They become permanent

• They change color

• They fade quickly

What is the final color of the developed fingerprints after applying the developer solution?

• Black

• Dark blue

• Light blue

• Dark brown

What is the purpose of comparing developed fingerprints with database records?

• To check the quality of paper

• To practice fingerprint development

• To test the effectiveness of iodine

• To identify unknown individuals