Forensic Blood Detection Techniques

The video tutorial explores the evolution of blood stain analysis, highlighting the use of Hemas sticks and luminol in detecting blood. It discusses the chemical reactions involved and introduces emerging technologies like infrared cameras that may enhance future forensic investigations. Despite technological advancements, blood remains a crucial element in solving violent crimes.

What has been the primary method for understanding blood's unique properties over the years?

• Microscopic analysis

• Genetic engineering

• Trial and error

• Advanced technology

What is the main chemical in hemas sticks that reacts with blood?

• Hydrogen peroxide

• Sodium chloride

• Luminol

• Tetramethylbenzidine

How do hemas sticks indicate the presence of blood?

• By vibrating

• By producing a smell

• By changing color

• By emitting a sound

What elements make up luminol?

• Carbon, hydrogen, sulfur, phosphorus

• Hydrogen, oxygen, sulfur, nitrogen

• Carbon, hydrogen, oxygen, nitrogen

• Carbon, nitrogen, sulfur, phosphorus

What happens when luminol reacts with blood?

• It emits a glowing light

• It changes color

• It produces a sound

• It releases a gas

What is a limitation of luminol in blood detection?

• It may be replaced by more advanced tools

• It cannot detect old blood stains

• It only works in daylight

• It requires a large amount of blood

What new technology is being developed to detect blood traces?

• Microwave detectors

• X-ray machines

• Infrared cameras

• Ultraviolet cameras

What is the primary advantage of the new forensic camera over luminol?

• It can detect invisible blood traces

• It is more portable

• It is cheaper

• It works faster

What will always provide insights into violent crimes, regardless of technology?

• Fingerprinting

• Blood

• DNA analysis

• Eyewitness accounts