Mock Test Set-25 (Forensic Science)

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Mock Test Set-25 (Forensic Science)

1. During autopsy, which method is considered most accurate for examining the coronary

arteries?

a) Longitudinal slicing from apex to base

b) Opening chambers in direction of blood flow

c) Serial transverse sections of coronary arteries

d) Dissection from aortic root to periphery

Answer: c) Serial transverse sections of coronary arteries

Explanation: Serial transverse slicing of the coronary arteries allows precise identification of

occlusions, atherosclerosis, and thrombi, which are crucial in cases of sudden cardiac death.

2. Which of the following tissues is most resistant to putrefaction and remains intact for forensic

examination even in advanced decomposition?

a) Brain

b) Lung

c) Cornea

d) Uterus

Answer: d) Uterus

Explanation: Among all internal organs, uterus in females and prostate in males are most resistant to putrefaction, and their identification is helpful in determining sex in decomposed bodies.

3. Hymenal rupture is NOT definitive proof of sexual intercourse because:

a) Hymen may not rupture even after repeated intercourse

b) Hymen only ruptures due to pregnancy

c) It can rupture only during childbirth

d) It regenerates over time

Answer: a) Hymen may not rupture even after repeated intercourse

Explanation: The hymen is variable in structure, and elastic hymens may remain intact even after

repeated intercourse. Conversely, rupture may occur from non-sexual causes (e.g., cycling,

gymnastics).

4. Which of the following is NOT considered essential while preparing the medico-legal report of

an alleged rape victim?

a) Collection of vaginal swabs

b) Estimation of vaginal pH

c) Documentation of genital injuries

d) Determination of consent

Answer: d) Determination of consent

Explanation: Consent is a legal question, not a medical one. The doctor must record findings

objectively (injuries, swabs, physical condition) without interpreting whether the act was consensual.

5. What is the significance of acid phosphatase detection in vaginal secretions during a sexual

offence examination?

a) Indicates presence of epithelial cells

b) Proves presence of blood

c) Confirms presence of semen

d) Measures pH of secretions

Answer: c) Confirms presence of semen

Explanation: Acid phosphatase is an enzyme found in high concentration in semen. Its detection

helps establish recent ejaculation, particularly when spermatozoa are absent due to vasectomy or

azoospermia.

6. In an adult male alleged to be involved in a rape case, which of the following findings most

strongly supports recent sexual activity?

a) Presence of smegma

b) Presence of pubic hair

c) Absence of sperm in the urine

d) Presence of smegma-free penis with congested glans

Answer: d) Presence of smegma-free penis with congested glans

Explanation: Freshly washed or absent smegma, congested glans, and abrasions or injuries on penis indicate recent sexual activity, which may be relevant in establishing physical involvement.

7. In medico-legal terms, what does the "two-finger test" violate according to Supreme Court directives?

a) Right to privacy

b) Right against self-incrimination

c) Right to dignity under Article 21

d) Right to free speech

Answer: c) Right to dignity under Article 21

Explanation: The Supreme Court of India (2013) held the two-finger test as unscientific, violating a woman’s right to privacy and dignity under Article 21 of the Constitution.

8. In cases of sodomy, which of the following anal findings strongly suggests passive habitual

submission?

a) Radial tears around the anal margin

b) Congestion and edema of anal canal

c) Thickened, keratinized perianal skin

d) Presence of blood-stained feces

Answer: c) Thickened, keratinized perianal skin

Explanation: In habitual passive sodomy, the anal skin shows hyperkeratosis, thickening, and loss of rugosity, reflecting repeated penetration over time.

9. What is the legal term for sexual intercourse with one’s own wife who is under 18 years of

age?

a) Rape under Section 376 IPC

b) Adultery under Section 497 IPC

c) Marital rape – Not punishable

d) Statutory rape as per Section 375 IPC

Answer: d) Statutory rape as per Section 375 IPC

Explanation: After the 2017 Supreme Court ruling, intercourse with wife under 18 years is

considered rape under Section 375 IPC, irrespective of marriage.

10. Which of the following biological specimens is LEAST useful for DNA profiling in a sexual

assault investigation conducted within 24 hours of the alleged incident?

a) Semen-stained vaginal swab

b) Pulled scalp hair

c) Blood from a stained bedsheet

d) Cut fingernails from victim

Answer: b) Pulled scalp hair

Explanation: Scalp hair usually lacks root sheaths and thus provides poor DNA yield compared to

semen, blood, or epithelial DNA under fingernails from defensive actions.