Q.1 What is the primary goal of crime scene investigation?
To apprehend suspects immediately
To collect and preserve evidence
To interrogate witnesses
To conduct a media briefing
Explanation - The main goal of crime scene investigation is to systematically collect, document, and preserve evidence for analysis and legal proceedings.
Correct answer is: To collect and preserve evidence
Q.2 Which of the following is considered a direct evidence at a crime scene?
Fingerprints
DNA sample
Eyewitness testimony
Bloodstain pattern
Explanation - Direct evidence directly proves a fact without inference, such as eyewitness testimony describing what they saw.
Correct answer is: Eyewitness testimony
Q.3 What is the first step when arriving at a crime scene?
Collecting evidence
Securing the scene
Interviewing witnesses
Taking photographs
Explanation - Securing the crime scene prevents contamination and ensures safety while preserving the integrity of evidence.
Correct answer is: Securing the scene
Q.4 Which professional is primarily responsible for analyzing physical evidence collected from a crime scene?
Crime scene investigator
Forensic psychologist
Forensic pathologist
Detective
Explanation - Crime scene investigators collect and analyze physical evidence to support criminal investigations.
Correct answer is: Crime scene investigator
Q.5 Why are photographs taken before evidence is collected?
To share on social media
To provide a visual record of the scene
To confuse suspects
To identify witnesses
Explanation - Photographs document the original condition of the scene and evidence, which is crucial for investigations and court proceedings.
Correct answer is: To provide a visual record of the scene
Q.6 Which of the following is considered trace evidence?
A murder weapon
A large blood pool
Hair strands
A footprint in the mud
Explanation - Trace evidence refers to small, often microscopic material transferred during the commission of a crime, such as hair, fibers, or paint chips.
Correct answer is: Hair strands
Q.7 What does 'chain of custody' refer to in forensic investigation?
The order in which investigators arrive at a scene
The documented process tracking evidence from collection to court
The sequence of criminal events
The priority list of suspects
Explanation - Chain of custody ensures that evidence is accounted for at all times and maintains its integrity for legal proceedings.
Correct answer is: The documented process tracking evidence from collection to court
Q.8 Which of these is NOT typically part of a crime scene sketch?
Scale measurements
Position of evidence
Witness statements
Room layout
Explanation - A crime scene sketch is a visual representation including measurements, evidence, and layout; witness statements are documented separately.
Correct answer is: Witness statements
Q.9 Blood spatter analysis helps investigators determine:
The motive of the crime
The weapon used
The time of death and positions of people
The suspect’s age
Explanation - Blood spatter patterns provide clues about the events during a crime, including positions and movements of victim and suspect.
Correct answer is: The time of death and positions of people
Q.10 Which method is commonly used to lift fingerprints from surfaces?
Casting with plaster
Powder dusting
DNA swabbing
Photographing alone
Explanation - Fingerprint powder adheres to oils left on surfaces, allowing investigators to lift and preserve prints for analysis.
Correct answer is: Powder dusting
Q.11 A forensic entomologist studies:
Soil composition at a crime scene
Insects to estimate time of death
Fingerprints
Digital evidence
Explanation - Forensic entomologists analyze insect activity on a corpse to help determine the postmortem interval.
Correct answer is: Insects to estimate time of death
Q.12 What is the purpose of collecting control samples at a crime scene?
To confuse the suspect
To serve as a comparison with evidence
To test witness honesty
To photograph the scene
Explanation - Control samples are uncontaminated samples from the scene used to compare with collected evidence to detect foreign material.
Correct answer is: To serve as a comparison with evidence
Q.13 Which of the following is an example of circumstantial evidence?
Video footage of a crime
DNA from a hair at the scene
A suspect confessing
A witness identifying a suspect
Explanation - Circumstantial evidence requires inference to connect it to a fact; DNA found at a scene suggests presence but does not directly prove the crime.
Correct answer is: DNA from a hair at the scene
Q.14 What is the main risk if a crime scene is not secured promptly?
Evidence can be contaminated or lost
Suspects may flee
Witnesses may forget details
Media may arrive first
Explanation - Failure to secure the scene can lead to contamination, destruction, or loss of critical evidence.
Correct answer is: Evidence can be contaminated or lost
Q.15 What does a forensic pathologist primarily determine?
Suspect identity
Cause and manner of death
Witness credibility
Crime scene layout
Explanation - Forensic pathologists examine bodies to determine how, when, and why someone died.
Correct answer is: Cause and manner of death
Q.16 Which type of evidence is most likely to degrade quickly if not collected properly?
Digital files
Fingerprints on glass
Biological samples like blood
Hair strands
Explanation - Biological evidence is highly perishable and must be preserved under proper conditions to prevent degradation.
Correct answer is: Biological samples like blood
Q.17 Which of the following is a common method to document a crime scene?
Sketching, photographing, and note-taking
Only interviewing witnesses
Collecting evidence first
Holding press conferences
Explanation - Documentation involves multiple methods to capture details accurately for later analysis and court presentation.
Correct answer is: Sketching, photographing, and note-taking
Q.18 What is Locard's Exchange Principle?
Every crime scene is unique
Every contact leaves a trace
Witness testimony is unreliable
DNA can solve all crimes
Explanation - Locard's Principle states that perpetrators will always leave something behind and take something away from a crime scene.
Correct answer is: Every contact leaves a trace
Q.19 Which tool is essential for collecting small trace evidence?
Magnifying glass and tweezers
Camera and notebook
Handcuffs and flashlight
Plastic bag and rope
Explanation - Fine tools allow investigators to carefully collect tiny materials without contamination.
Correct answer is: Magnifying glass and tweezers
Q.20 Which of the following best describes a secondary crime scene?
The primary location where the crime occurred
A location related to the crime but not the main scene
Where the suspect is arrested
Where witnesses are interviewed
Explanation - Secondary crime scenes are places connected to the crime, such as where evidence is discarded or a victim is moved.
Correct answer is: A location related to the crime but not the main scene
Q.21 Which evidence type can provide information about a suspect's habits or patterns?
Digital footprints
Shoeprints
Blood spatter
All of the above
Explanation - Digital, physical, and biological evidence can all reveal behavioral patterns of a suspect.
Correct answer is: All of the above
Q.22 Why is it important to wear gloves while handling evidence?
To stay clean
To prevent contamination of evidence
To look professional
To avoid fingerprints being photographed
Explanation - Gloves protect evidence from being contaminated by investigators’ DNA or fingerprints.
Correct answer is: To prevent contamination of evidence
Q.23 Which of the following is most important for maintaining evidence integrity?
Proper collection, labeling, and storage
Collecting as quickly as possible
Only photographing items
Interviewing witnesses first
Explanation - Maintaining evidence integrity involves careful collection, labeling, storage, and documentation for forensic analysis.
Correct answer is: Proper collection, labeling, and storage
Q.24 What is the primary role of forensic investigators at a crime scene?
Solving the crime immediately
Documenting, collecting, and analyzing evidence
Arresting suspects
Conducting legal trials
Explanation - Forensic investigators focus on evidence handling rather than making arrests or legal judgments.
Correct answer is: Documenting, collecting, and analyzing evidence
Q.25 Which of the following can help determine if a wound was inflicted before or after death?
Blood type analysis
Rigor mortis examination
Toxicology report
Witness statements
Explanation - Forensic experts examine body changes such as rigor mortis and livor mortis to determine wound timing relative to death.
Correct answer is: Rigor mortis examination