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Roles of Forensic Chemists in Criminal Investigation

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Roles of Forensic Chemists in Criminal Investigation

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Questions and Answers

What information can the identification of an accelerant like gasoline or kerosene during a fire investigation provide?

It was an accidental fire caused by faulty wiring

The fire was intentionally set (correct)

The fire was due to a natural disaster

The cause of the fire cannot be determined

How does the identification of RDX in an explosive investigation impact the suspect list?

Increases the suspect list to include all demolition experts

Narrows down the suspect list to individuals with a military connection (correct)

Has no impact on the suspect list

Excludes military personnel from the suspect list

What role do forensic chemists play in drug or alcohol cases according to the text?

They carry out arrests based on suspicion

They provide legal advice to investigators

They conduct psychological evaluations on suspects

They help confirm or refute investigators' suspicions (correct)

What does the detection of specific poisons during a poisoning investigation help detectives with?

Identifying potential suspects Signup and view all the answers

How does the identification of TNT in an investigation differ from the identification of RDX or C-4?

It broadens the suspect list due to various civilian uses Signup and view all the answers

What is the main advantage of using FTIR spectroscopy in forensic chemistry?

It is a quick and easy non-destructive process Signup and view all the answers

Why might FTIR analysis be unacceptable for identifying novel mixtures?

Because novel mixtures can be difficult to resolve due to the cumulative nature of the response Signup and view all the answers

In forensic chemistry, what is one factor forensic chemists consider when choosing an instrument for examination?

The length of time the instrument will take to examine a substance Signup and view all the answers

What is one limitation of using AAS (Atomic Absorption Spectroscopy) in forensic chemistry?

It requires destructive analysis which can limit further testing on the same sample Signup and view all the answers

Why do forensic chemists prefer using non-destructive methods first in examinations?

To preserve evidence for further examination Signup and view all the answers