Evidence Handling

Concept: In forensic document examination, experts analyze documents to determine whether they are genuine or forged. Such documents are called questioned documents. These documents may include:

• Handwritten notes
• Signatures
• Contracts
• Printed documents
• Cheques and legal papers

Step 1: Understanding the meaning of a questioned document.
A questioned document refers to any document whose origin, authorship, or genuineness is disputed or uncertain during an investigation.
Step 2: Identifying what is in doubt.
In forensic science, the main reason a document becomes questioned is because its authenticity is doubtful. Experts analyze handwriting, ink, paper, printing methods, and alterations to determine whether the document is genuine. Thus, the correct answer is:

Concept: Fingerprint powders are used in forensic investigations to develop latent fingerprints on smooth, non-porous surfaces such as glass, metal, or plastic. These powders adhere to the moisture and oily residues left by the friction ridges of the fingers. Different types of fingerprint powders include:

• Black powder
• Grey powder
• Magnetic powder
• Fluorescent powder

Step 1: Understanding grey fingerprint powder.
Grey powder is commonly used on darker surfaces where black powder may not provide sufficient contrast.
Step 2: Identifying the main component.
The main component of grey fingerprint powder is graphite. Graphite particles adhere to the oily residues in latent fingerprints, making the ridge patterns visible for examination. Thus, the correct answer is:

Concept: Handwriting analysis (forensic document examination) studies the characteristics of writing to determine authenticity or authorship of a document. Experts examine various features such as letter formation, spacing, slant, strokes, and decorative elements. Important handwriting features include:

• Letter formation and size
• Pen pressure and stroke direction
• Spacing between words and letters
• Decorative features at the ends of strokes

Step 1: Understanding decorative strokes in writing.
In handwriting and typography, small finishing strokes or decorative extensions at the ends of letters are known as serifs. These tiny projections appear at the ends of the main strokes of characters.
Step 2: Identifying the correct term.
Serifs are used to enhance readability in many writing styles and typefaces. In forensic handwriting analysis, the presence or style of serifs can help identify an individual's writing habits. Thus, the correct answer is:

Concept: In forensic investigations, physical evidence must be handled carefully to ensure that it remains authentic and admissible in court. The Chain of Custody is a systematic process used to track the collection, handling, transfer, and storage of evidence. Key elements of Chain of Custody include:

• Proper labeling and packaging of evidence
• Documentation of every person who handles the evidence
• Recording the date, time, and purpose of transfer
• Secure storage of the evidence

Step 1: Understanding the meaning of Chain of Custody.
Chain of Custody refers to the chronological documentation that records the sequence of custody, control, transfer, analysis, and disposition of physical evidence.
Step 2: Identifying its primary objective.
The main objective of maintaining a Chain of Custody is to ensure that:

• The evidence has not been tampered with.
• The integrity and authenticity of the evidence are preserved.
• The evidence remains legally admissible in court.

Thus, the correct answer is: