UGC NTA NET/JRF Exam, Forensic Science, June-2025

Total Questions: 100

81. 0.303 inch rifle, which was most commonly used in the police forces in India, had which of the following action:

1. Lever action weapon
2. Slide action weapon
3. Hinge action weapon
4. Bolt action weapon

Correct Answer: 4. Bolt action weapon

Solution:

The .303 British Lee-Enfield-issued widely to Indian police and military-uses a manual bolt. The shooter lifts and pulls the bolt to extract/ eject the spent case, then pushes it forward to chamber the next round. This action is prized for reliability, strength, and good accuracy.

82. Arrange in sequence, the putrefaction of internal organs in reverse action:

A. Brain
B. Mucosa of trachea and larynx
C. Stomach and intestine
D. Spleen
E. Liver
Choose the correct answer from the options given below:

Correct Answer: 5. (*)

Solution:

Standard forward order of internal organ putrefaction (earliest → latest) is generally: B (larynx/trachea) → C (stomach & intestine) → D (spleen) → E (liver) → A (brain).

The question asks for the reverse order (latest → earliest), which should therefore be: A→ E → D → С → В.

None of the four choices match A, E, D, C, B, so the correct response is that no option provided is accurate.

83. What is meant by 'over-text' while referring to secret writing?

1. The invisible writing
2. The visible writing
3. Extraneous marking
4. Perforation marks

Correct Answer: 2. The visible writing

Solution:

In secret writing, over-text is the ordinary, visible text written on the page to mask the presence of hidden/invisible "under-text". It's camouflage for clandestine messages (e.g., invisible ink) so the document appears innocuous.

84. Match List-I with List-II:

List-I	List-II
A. ABO blood grouping	I. Electrophoresis
B. Blood proteins	II. Benzidine test
C. Gm and Inv system	III. Agglutination
D. Blood stain	IV. Antibody neutralization method

Choose the correct answer from the options given below:

1. A-III, B-IV, C-I, D-II
2. A-II, B-III, C-IV, D-I
3. A-III, B-I, C-IV, D-II
4. A-I, B-III, C-IV, D-II

Correct Answer: 3. A-III, B-I, C-IV, D-II

Solution:

A. ABO grouping → III (Agglutination): ABО types are identified by agglutination with specific antisera.

B. Blood proteins → I (Electrophoresis): Serum/plasma proteins are separated by charge/size.

C. Gm & Inv system → IV (Antibody neutralization): Immunoglobulin allotypes are typed via neutralization methods.

D. Blood stain → II (Benzidine test): A classic presumptive test exploiting hemoglobin's peroxidase-like activity.

85. Which of the following is a red cell enzyme?

1. Protease
2. Sucrase
3. Amylase
4. Haptoglobin

Correct Answer: 1. Protease

Solution:

Of the choices, the only category that correctly maps to enzymes present in red cells is protease (RBCs contain proteolytic activities such as calpain/proteasomal components).

Sucrase is a brush-border intestinal enzyme, amylase is chiefly salivary/pancreatic (forensic marker for saliva, not RBC), and haptoglobin is a plasma glycoprotein (hemoglobin-binding), not an enzyme.

86. After death of humans, tissues and cells survive for a varying period depending upon their oxygen requirement, and when these individual tissues and cells die, it is termed as:

1. Somatic death
2. Brain death
3. Positional death
4. Molecular death

Correct Answer: 4. Molecular death

Solution:

Somatic death is the complete and irreversible cessation of life functions of the organism as a whole. After somatic death, individual tissues and cells continue to survive for a variable time depending on their oxygen demand.

When they eventually die, this process is called molecular death. Hence, the correct term for tissue/cell-level death after somatic death is molecular death.

87. The amount of degree of yaw depends upon which of the following:

A. Length of the cartridge case
B. Rate of the twist of the barrel
C. Density of the air
D. Diameter and cross-sectional density of the bullet
E. Length of the barrel
Choose the correct answer from the options given below:

1. B, C, D only
2. A, B, E only
3. C, D, A only
4. B, D, E only

Correct Answer: 1. B, C, D only

Solution:

The yaw of a bullet is its deviation from its straight axis during flight. The amount or degree of yaw depends on:

Rate of twist of the barrel (B): Determines the spin stabilization of the bullet.

Density of the air (C): Higher density increases air resistance, which can increase yaw.

Diameter and cross-sectional density of the bullet (D): Affects bullet stability and resistance in flight.

Not significantly dependent on cartridge case length (A) or barrel length (E).

88. Match List-I with List-II:

List-I	List-II
A. Scratches	I. Laceration
B. Contusions	II. Incised wound
C. Split	III. Bruises
D. Cuts	IV. Abrasions

Choose the correct answer from the options given below:

1. A-IV, B-III, C-I, D-II
2. A-II, B-IV, C-III, D-I
3. A-I, B-III, C-II, D-IV
4. A-IV, B-I, C-III, D-II

Correct Answer: 1. A-IV, B-III, C-I, D-II

Solution:

Scratches → IV (Abrasions): Superficial damage to skin surface.

Contusions → III (Bruises): Discoloration caused by blood leakage under the skin due to blunt trauma.

Split → I (Laceration): Tearing of tissue due to blunt force.

Cuts → II (Incised wound): Clean wounds caused by sharp-edged instruments.

89. ABH group specific substances are found in which of these:

A. Hair root of secretor
B. Saliva of non-secretor
C. Semen of secretor
D. Vaginal secretion of non-secretor
Choose the correct answer from the options given below:

1. А, В only
2. А, C only
3. A, D only
4. B, D only

Correct Answer: 2. А, C only

Solution:

Secretors: About 80% of people are secretors, meaning they secrete ABH blood group-specific substances into body fluids such as saliva, semen, vaginal fluid, sweat.

Therefore, hair root of secretor (A) and semen of secretor (C) contain ABH substances. Non-secretors do not secrete ABH substances into body fluids, so (B) saliva of non-secretor and (D) vaginal secretion of non-secretor will not contain them.

90. Which part of The Constitution of India deals with Fundamental Rights?

1. Part I
2. Part III
3. Part IV
4. Part V

Correct Answer: 2. Part III

Solution:

The Fundamental Rights are enshrined in Part III (Articles 12-35) of the Constitution of India.

They guarantee civil liberties such as equality, freedom, rights against exploitation, freedom of religion, cultural and educational rights, and constitutional remedies.