Question

Arrange the following in correct steps for collection of tool marks from the crime scene.
A. Trace evidence associated with tool marks should be prevented from loss or contamination
B. Marks on metal should be covered with oil to prevent oxidation
C. Cast of tool marks should be prepared to take impression or the whole object to be transported to the crime lab
D. Close-up photography

• A. A, D, C, B
• B. D, A, B, C
• C. C, B, D, A
• D. A, C, B, D

Hint:

The universal rule for evidence collection is: \textbf{Document, then Collect.} First photograph and sketch. Then, collect the most fragile evidence (trace) before moving on to collecting the main item or making casts. Preservation of the collected item is the final step.

Answer 1

The Correct Option is A

Step 1: Initially, safeguard trace evidence. Prevent loss or contamination of trace evidence linked to tool marks to avoid destruction of microscopic details. Therefore, the first step is:
\( A \)

Step 2: Following evidence preservation, take close-up photographs of the tool marks to create a permanent record before further handling. So, the second step is: 
\( D \) 

Step 3: Subsequently, perform casting of tool marks, or transport the marked object to the lab for analysis. So, the third step is: 
\( C \) 

Step 4: Lastly, for metallic marks, apply oil to prevent oxidation and preserve them until analysis. So, the last step is: 
\( B \) 

Final Answer: 
\( \boxed{A \; \rightarrow \; D \; \rightarrow \; C \; \rightarrow \; B} \)