Miscellaneous Questions of Forensic Science Set-2

Miscellaneous Questions of Forensic Science Set-2

Question 1) Cadaveric spasm indicates

(A) Suicide

(B) Homicide

(C) Natural death

(D) Last act of person before death

Answer: (D)

Solution: 

• Cadaveric spasm is a condition of muscles immediately after the onset of death. Muscles become stiff and rigid. It means the last act of a person before death.
• Suicide and homicide are the manner of death.

Question 2) The following is the most acceptable method for revealing indented writing:

(A) Oblique lighting

(B) Intense lighting

(C) Rubbing with a pencil lead

(D) ESDA

Answer: (D)

Solution: Although indented writing was revealed by oblique lighting and intense lighting but, ESDA is preferred because it is a non-destructive method, and it helps in recovering non-visible microscopic indentations. It means the indented marks which are three-four below the original writing.

Question 3) ABO grouping is based on

(A) Red cell surface antigen

(B) Plasma proteins

(C) Red cell enzyme

(D) Nuclear chromatin

Answer: (A)

Solution: ABO blood grouping is a classification system of human blood based on the presence or absence of certain markers on the surface of red blood cells called antigens i.e., Antigen A and Antigen B.

Question 4) LSD is derived from which of the following plant?

(A) Cannabis sp.

(B) Papaver Somniferum

(C) Erythroxylum sp.

(D) Claviceps Purpurea

Answer: (D)

Solution: LSD (lysergic acid diethylamide) is a hallucinogenic drug derived from the fungus Claviceps purpurea. Erythroxylum sp., a tropical shrub is the source of the drug cocaine. Papaver Somniferum (opium poppy) is the source of many alkaloids like codeine, morphine, etc. Cannabis sp. Ae used as herbal drug is a source of Cannabis (marijuana).

Question 5)  One of the following is not a component of the Kastle-Meyer Test

(A) Phenolphthalein

(B) Glacial Acetic Acid

(C) Zinc dust

(D) Potassium Hydroxide

Answer: (B)

Solution: Kastle-Meyer test also known as the Phenolphthalein test is a presumptive test for blood has the following reagents-

Stock solution: Phenolphthalein

Potassium hydroxide: 20 g

Distilled water: 100 ml

Zinc dust: 20 g

Glacial acetic acid is not used in this test. It is used in TMB (tetramethyl benzidine) test for blood.

 

Question 6) __________ death is that state of body where there is complete cessation of the vital parts of body responsible to maintain life and death.

(A) Molecular

(B) Asphyxia

(C) Somatic

(D) Syncope

Answer: (C)

Solution: The correct answer is somatic death.

Somatic death is the state of the body where there is complete cessation of vital parts of body responsible to maintain life and death. It includes death of the brain stem. But several cells of body still in function after death till the onset of molecular death, it is because the cells live on residual oxygen for a variable time. The subsequent change occurs due to metabolic dysfunction and structural disintegration.

Asphyxia is a condition that occur due to interference with the respiration process due to which organs and tissues deprived of oxygen cause unconsciousness or death in severe cases.

Syncope is a medical condition for fainting or temporary loss of consciousness. It is due to drop in the amount of blood flowing to brain.    

Question 7) 

Assertion (A): Blood stains on cloth should be collected after drying in shade under room heater.

Reason (R): It causes disintegration of blood stains.

(A) Both (A) and (R) are correct.

(B) Both (A) and (R) are incorrect.

(C) (A) is correct, but (R) is incorrect.

(D) (A) is incorrect, but (R) is correct.

Answer: (D)

Solution: Assertion is wrong blood stains on cloth should not be collected after drying in shade under room heater. It results in degradation of blood cells due to excessive heat and contamination of the blood.

Question 8) Medullary Index of human hair is

(A) 0.8

(B) 0.6

(C) 0.4

(D) 0.3 or below

Answer: (D)

Solution: Medullary index is the ratio of the diameter of medulla multiplies by 100 to diameter of hair.

As we know, medulla is either absent or fragmented in human hair, so it is less than 0.3. and in animals it is continuous, so it is more than 0.5

Question 9) 

Assertion (A): Hair has paramount importance to establish the link between suspect and victim and linking both with the scene of occurrence.

Reason (R): As per Locard principle of exchange.

Codes:

(A) (A) is correct, but (R) is incorrect.

(B) Both (A) and (R) are incorrect.

(C) (R) is correct, but (A) is incorrect.

(D) Both (A) and (R) are correct.

Answer: (D)

Solution: Hair is trace evidence that can be transferred during physical contact and its presence on crime scene, on the body of a suspect or victim helps in connecting by DNA profiling method.

And Locard exchange principle states that every contact leaves a trace. It means whenever we come in contact with anything we leave our trace and carry something from that material.

Question 10) The following is considered as part of gait pattern:

(A) Step length

(B) Foot angle

(C) Walking line

(D) All of the above

Answer: (D)

Solution: Gait pattern is the person’s pattern of walking. It involves coordination and balance of muscles so that body move in proper manner.

Step length- at how much distance we put our next step. It we take a longer step distance leads to disbalance in gait pattern

Foot angle and walking line means to walk in a straight line and keep your foot at 90-degree angle.