Read the passage carefully and answer the following questions (1-7)-
It had the time when dates of the exam of 8th standard students was about to declare. A heinous crime was taken place inside the school. A series of bloody footprints was seen going outside from the washroom. When everyone arrived there a dead body of a student was found inside the washroom and the blood pool was seen on the floor. Blood spattering was found on the walls & mirror of the washroom. FIR was lodged immediately without disturbing the seen. So, the police came to the scene to investigate it along with the I.O. During investigation, investigator noticed that the tap of washbasin was open. It was also noticed that the neck of the body was been cut by the culprit which caused death. After further investigation a knife was also found at the crime scene.
Q1. Which among the following is not the type of blood stain?
A.
Impact stain
B.
Active stain
C.
Transfer stain
D.
Passive stain
E.
Projected stain
ANSWER-B
EXPLANATION
Passive stains- It is the result of
gravity acting on an injured body. Examples are drop, flow and pool.
Transfer stains- forms when objects come into contact with existing bloodstains and leaving wipes, swipes or pattern transfers. Examples are bloody fingerprint or a smear from a body being dragged etc.
Impact stains-Also known as projected stain. It forms when blood projecting through the air due to internal blood pressure. Examples are spatter, but may also include gushes, splashes and arterial spurts.
Q2. What do you understand by back-spatter?
A. Blood drops that traveled in the same direction of the external force applied
B. Blood drops that traveled in the opposite direction of the internal force applied
C. Blood drops that traveled in the opposite direction of the external force applied
D. Blood drops that traveled in the same direction of the internal force applied
ANSWER-C
EXPLANATION
Back-spatter
A bloodstain pattern resulting from blood drops that traveled in the opposite direction of the external force applied. The best example of back-spatter is an entrance wound created by a projectile.
Q3. A smaller bloodstain that originated during the formation of the parent stain as a result of blood impacting a surface is known as?
A.
Satellite stain
B.
Serum stain
C.
Daughter stain
D.
Perimeter stain
E.
Saturation stain
ANSWER-A
EXPLANATION
Satellite Stain- smaller bloodstain
that originated during the formation of the parent stain as a result of blood
impacting a surface.
Perimeter Stain- altered stain that consists of the peripheral characteristics of the original stain.
Saturation Stain - bloodstain resulting from the accumulation of liquid blood in an absorbent material.
Serum Stain – stain resulting from the liquid portion of blood (serum) that separates during coagulation.
Q4. Which among the following is the correct formula for determination of the angle of impact?(A= angle of impact)
ANSWER-B
Q5. Which among the following is useful to determine the direction of blood stain formation?
A.
Head of blood stain
B.
Length of blood stain
C.
Width of blood stain
D.
Tail of blood stain
E.
Satellite stain
ANSWER-D
Q6. Which among the following surface makes greater distortion of blood stain in comparison to others?
A.
Floor tiles
B.
Floor marble
C.
Bed sheet
D.
Carpet
E.
Distortion depend only on
height
ANSWER-D
EXPLANATION
Smooth surface- such as tile,
marble or linoleum, will cause little distortion of this spherical shaped drop
due to surface tension of blood.
Rough surface- such as carpet or concrete, disrupts the surface tension and causes the drops to break into several parts.
Q7. Tail of satellite blood stain is in which direction with respect to the parent blood stain?
A.
Opposite to parent
blood stain
B.
Same direction of
parent blood stain
C.
Lateral to parent
blood stain
D.
Tail absent
ANSWER-A
EXPLANATION
Generally tail of blood stain is in the same direction of travel, but here is satellite blood stain is its exception because its tail is in opposite direction of direction of travel.
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