Question 1: In India, the first central Forensic Science laboratory was established in Calcutta in:
- A) 1952
- B) 1957
- C) 1962
- D) 1965
Answer
B) 1957
The first central Forensic Science Laboratory in India was established in Calcutta (now Kolkata) in 1957. This marked the beginning of organized forensic science services in the country. The establishment of this laboratory was a significant step in the development of forensic sciences in India, providing support in the investigation of crimes and fostering forensic science education and research.
Question 2: The first fingerprint bureau of the world was established in:
- A) Calcutta
- B) London
- C) Paris
- D) Madras
Answer
A) Calcutta
The first fingerprint bureau in the world was established in Calcutta (now Kolkata), India, in 1897. This pioneering move by the British colonial authorities in India marked the beginning of the use of fingerprints as a scientific method of identification and investigation in criminal cases.
Question 3: Match the following:
| List-I | List-II |
|---|---|
| (a) H.L Bami | (i) Teaching of forensic Science in India |
| (b) D P Jatar | (ii) Forensic Anthropology |
| (c) Krogman | (iii) Serology |
| (d) Barbara Dodd | (iv) Central Forensic Science laboratory of India |
Code: (a) (b) (c) (d)
- A) (i) (iii) (iv) (ii)
- B) (i) (iii) (iv) (ii)
- C) (ii) (i) (iv) (iii)
- D) (i) (ii) (iii) (iv)
Answer
D) (i) (ii) (iii) (iv)
Explanation: The correct matching is:
- (a) H.L. Bami – (i) Teaching of forensic Science in India
- (b) D.P. Jatar – (ii) Forensic Anthropology
- (c) Krogman – (iii) Serology
- (d) Barbara Dodd – (iv) Central Forensic Science laboratory of India
H.L. Bami was a pioneer in the teaching of forensic science in India. D.P. Jatar made significant contributions to the field of forensic anthropology. Krogman is known for his work in serology, and Barbara Dodd was associated with the Central Forensic Science Laboratory of India.
Question 4: Arrange the following steps of criminal investigation in a proper sequence.
- (i) Collection of physical evidence
- (ii) Photography and sketching
- (iii) Protection of scene of crime
- (iv) Recording of FIR
Code:
- A) (i), (iii), (iv) and (ii) are correct
- B) (ii), (i), (iv) and (iii) are correct
- C) (iv), (iii), (ii) and (i) are correct
- D) (iii), (ii), (iv) and (i) are correct
Answer
C) (iv), (iii), (ii) and (i) are correct
Explanation: The proper sequence of steps in a criminal investigation is:
- (iv) Recording of FIR (First Information Report)
- (iii) Protection of the scene of crime
- (ii) Photography and sketching
- (i) Collection of physical evidence
The first step is to record the FIR, which initiates the investigation process. This is followed by securing and protecting the crime scene to prevent contamination or alteration of evidence. Once the scene is secured, photography and sketching are carried out to document the scene and evidence. Finally, physical evidence is collected for further analysis.
Question 5: In the case of poisoning of a living person, the following physical evidences are collected and preserved:
- (i) Vomit
- (ii) Excreta
- (iii) Viscera
- (iv) Blood
Code:
- A) (i), (ii) and (iv) are correct
- B) (i), (ii) and (iii) are correct
- C) (ii), (iii) and (iv) are correct
- D) (i), (ii), (iii) and (iv) are correct
Answer
A) (i), (ii) and (iv) are correct
Explanation: In cases of suspected poisoning of a living person, the following physical evidences are collected and preserved for analysis:
- (i) Vomit
- (ii) Excreta
- (iv) Blood
These samples are crucial for identifying the presence of toxic substances and determining the cause of poisoning. Vomit and excreta may contain traces of the poison, while blood analysis can provide information about the concentration of the toxic substance in the body.
Question 6: Neutron Activation Analysis is used to identify the following:
- A) Ink
- B) Drugs
- C) Blood
- D) Toxic heavy metals
Answer
D) Toxic heavy metals
Explanation: Neutron Activation Analysis (NAA) is a nuclear analytical technique used to identify and quantify trace amounts of elements, particularly toxic heavy metals, in various samples. It is especially useful for detecting heavy metals in environmental, forensic, and biological samples due to its high sensitivity and accuracy.
Question 7: Assertion (A): Infra Red spectrometry provides an absolute identity of an organic compound
Reason (R): It gives the molecular structure of the compound
- A) Both (A) and (R) are true
- B) Both (A) and (R) are false
- C) (A) is true but (R) is false
- D) (A) is false but (R) is true
Answer
A) Both (A) and (R) are true
Explanation: Infrared (IR) spectrometry is a technique used to identify organic compounds by analyzing their molecular structure. The IR spectrum of a compound is unique and provides an absolute identity of the compound. Additionally, the IR spectrum reveals information about the molecular structure, such as the presence of specific functional groups and bond types, allowing for the determination of the compound’s molecular structure.
Question 8: Match the following:
| List-I | List-II |
|---|---|
| (a) Gel electrophoresis | (i) Examination of synthetic fibre |
| (b) Polarising microscope | (ii) Matching of firing pin mark |
| (c) Atomic Absorption Spectroscopy | (iii) Enzyme typing |
| (d) Comparison microscope | (iv) Estimation of metals |
Code: (a) (b) (c) (d)
- A) (i) (ii) (iii) (iv)
- B) (iii) (i) (iv) (ii)
- C) (iv) (iii) (ii) (i)
- D) (ii) (iii) (iv) (i)
Answer
B) (iii) (i) (iv) (ii)
Explanation: The correct matching is:
- (a) Gel electrophoresis – (iii) Enzyme typing
- (b) Polarising microscope – (i) Examination of synthetic fibre
- (c) Atomic Absorption Spectroscopy – (iv) Estimation of metals
- (d) Comparison microscope – (ii) Matching of firing pin mark
Gel electrophoresis is used for enzyme typing, polarizing microscopes are used to examine synthetic fibers, atomic absorption spectroscopy is used for estimating metal concentrations, and comparison microscopes are used for matching firing pin marks on bullets or cartridge cases.
Question 9: Activation analysis can be done by
- (i) Neutron
- (ii) Proton
- (iii) Alpha particles
- (iv) Photon
Code:
- A) (i), (ii) and (iv) are correct
- B) (ii), (iii) and (iv) are correct
- C) (i), (ii) and (iii) are correct
- D) (i), (iii) and (iv) are correct
Answer
C) (i), (ii) and (iii) are correct
Explanation: Activation analysis is a technique used to identify and quantify trace elements in a sample by bombarding it with neutrons, protons, or alpha particles. This process induces artificial radioactivity in the sample, and the resulting radioactive emissions are analyzed to determine the elemental composition.
- (i) Neutron Activation Analysis (NAA) is a common technique that uses neutrons to induce radioactivity.
- (ii) Proton Activation Analysis (PAA) uses protons for the same purpose.
- (iii) Alpha particle Activation Analysis (APA) utilizes alpha particles to induce radioactivity.
However, photon activation analysis is not a common technique as photons do not typically induce radioactivity in the sample.
Question 10: Atomizer is used in
- A) UV Spectrophotometry
- B) IR Spectrophotometry
- C) Atomic Absorption Spectrophotometry
- D) Neuton Activation Analysis
Answer
C) Atomic Absorption Spectrophotometry
Explanation: An atomizer is a device used in atomic absorption spectrophotometry (AAS) to convert the liquid sample into an atomic vapor. The atomizer is responsible for breaking down the sample into individual atoms, which can then absorb the specific wavelength of light emitted by the light source in the AAS instrument.
Atomizers are not used in UV spectrophotometry, IR spectrophotometry, or neutron activation analysis as these techniques do not require converting the sample into an atomic vapor.
Question 11: The absorption elution method for blood stains examination was first introduced by
- A) Zeltsch
- B) Fiori
- C) Siracusa
- D) coombs
Answer
C) Siracusa
Explanation: The absorption-elution method for examining blood stains was first introduced by Siracusa. This method is used to identify the presence of blood and to determine the blood group from dried blood stains. It involves extracting the blood residue from the stained material, allowing the blood components to be analyzed further.
Question 12: ‘Y-STR’s helps in determining
- A) Paternity
- B) Maternity
- C) Time since death
- D) None of the above
Answer
A) Paternity
Explanation: Y-STRs (Y-chromosomal Short Tandem Repeats) are genetic markers found on the Y chromosome, which is present only in males. Y-STR analysis is particularly useful in determining paternity, as the Y chromosome is passed down from father to son. By comparing the Y-STR profiles of a alleged father and son, paternity can be confirmed or excluded.
Question 13: Sex of an individual from blood can be determined by
- (i) X,Y Chromosome
- (ii) Barr bodies
- (iii) Protein pattern
- (iv) Testerone/Estroidil Ratio
Code:
- A) (i), (ii) and (iv) are correct
- B) (i), (iii) and (iv) are correct
- C) (ii), (iii) and (iv) are correct
- D) (i), (ii) and (iii) are correct
Answer
A) (i), (ii) and (iv) are correct
Explanation: The sex of an individual can be determined from blood samples by analyzing the following factors:
- (i) X,Y Chromosome: Females have two X chromosomes, while males have one X and one Y chromosome.
- (ii) Barr bodies: These are condensed, inactivated X chromosomes found in female cells.
- (iv) Testerone/Estroidil Ratio: Testosterone levels are higher in males, while estrogen levels are higher in females.
The protein pattern alone is not sufficient to determine the sex of an individual from blood.
Question 14: Match the following:
| List-I | List-II |
|---|---|
| (a) kell | (i) Serum protein |
| (b) Acid phosphatase | (ii) W B C |
| (c) Heptoglobin | (iii) Red cell antigen |
| (d) H L A | (iv) Red cell isoenzymes |
Code: (a) (b) (c) (d)
- A) (i) (ii) (iii) (iv)
- B) (iii) (iv) (i) (ii)
- C) (ii) (iii) (i) (iv)
- D) (iv) (ii) (iii) (i)
Answer
B) (iii) (iv) (i) (ii)
Explanation: The correct matching is:
- (a) kell – (iii) Red cell antigen
- (b) Acid phosphatase – (iv) Red cell isoenzymes
- (c) Heptoglobin – (i) Serum protein
- (d) H L A – (ii) W B C (White Blood Cells)
Kell is a red cell antigen, acid phosphatase is a red cell isoenzyme, heptoglobin is a serum protein, and HLA (Human Leukocyte Antigen) is associated with white blood cells.
Question 15: Arrange the following techniques of forensic serology as per the increasing chronological order:
- (i) DNA profile
- (ii) Blood group
- (iii) Genome structure
- (iv) HLA typing
Code:
- A) (i), (ii), (iii) and (iv) are correct
- B) (ii), (i), (iv) and (iii) are correct
- C) (iv), (ii), (iii) and (i) are correct
- D) (ii), (iv), (i) and (iii) are correct
Answer
B) (ii), (i), (iv) and (iii) are correct
Explanation: The increasing chronological order of the techniques of forensic serology is as follows:
- (ii) Blood group
- (i) DNA profile
- (iv) HLA typing
- (iii) Genome structure
Blood group determination was one of the earliest techniques used in forensic serology, followed by DNA profiling. HLA typing and the analysis of genome structure are more recent advancements in the field.
Question 16: Match the examination methods of list I with the suitable items in list II
| List-I | List-II |
|---|---|
| (a) Distillation | (i) Parathion |
| (b) Solvent extraction | (ii) Chloroform |
| (c) Spot test examination | (iii) Sankhia (Arsenic Trioxide) |
| (d) Dry ashing test | (iv) Cyanide |
Code: (a) (b) (c) (d)
- A) (i) (ii) (iii) (iv)
- B) (iv) (i) (ii) (iii)
- C) (ii) (i) (iv) (iii)
- D) (i) (iii) (ii) (iv)
Answer
C) (ii) (i) (iv) (iii)
Explanation: The correct matching is:
- (a) Distillation – (ii) Chloroform
- (b) Solvent extraction – (i) Parathion
- (c) Spot test examination – (iv) Cyanide
- (d) Dry ashing test – (iii) Sankhia (Arsenic Trioxide)
Distillation is used for the examination of volatile substances like chloroform. Solvent extraction is employed for the analysis of non-volatile substances like parathion. Spot tests are used for the rapid detection of substances like cyanide, and dry ashing is a technique used for the detection of inorganic substances like arsenic trioxide.
Question 17: Duquenoi’s levine test is used for
- A) Cocaine
- B) Heroin
- C) LSD
- D) Marijuana
Answer
D) Marijuana
Explanation: The Duquenois-Levine test, also known as the Duquenois-Levine reagent test, is a color test used to preliminarily identify the presence of marijuana (cannabis) in samples. The test involves treating the sample with a specific reagent, and a positive result is indicated by the development of a distinct blue-violet color, suggesting the presence of cannabinoids, the active compounds found in marijuana.
Question 18: In chronic Arsenic poisoning, the following are preserved for chemical analysis
- (i) Clothes
- (ii) Vomit
- (iii) Hair
- (iv) Nail clippings
Code:
- A) (i) and (ii) are correct
- B) (ii) and (iii) are correct
- C) (i) and (iii) are correct
- D) (iii) and (iv) are correct
Answer
D) (iii) and (iv) are correct
Explanation: In cases of chronic arsenic poisoning, hair and nail clippings are preserved for chemical analysis. Arsenic tends to accumulate in hair and nails over time, making these samples valuable for detecting long-term exposure to arsenic. Clothes and vomit may be relevant in acute poisoning cases but are not typically preserved for chronic arsenic poisoning analysis.
Question 19: Match the following:
| List-I | List-II |
|---|---|
| (a) Codeine | (i) Dhatura |
| (b) Hyoscine | (ii) Nuxvomica |
| (c) Atropine | (iii) Opium |
| (d) Strychnine | (iv) Atropa Belladona |
Code: (a) (b) (c) (d)
- A) (i) (iii) (iv) (ii)
- B) (iii) (i) (iv) (ii)
- C) (ii) (iii) (iv) (i)
- D) (iv) (i) (ii) (iii)
Answer
B) (iii) (i) (iv) (ii)
Explanation: The correct matching is:
- (a) Codeine – (iii) Opium
- (b) Hyoscine – (i) Dhatura
- (c) Atropine – (iv) Atropa Belladona
- (d) Strychnine – (ii) Nuxvomica
Codeine is an alkaloid found in opium. Hyoscine is derived from the plant Datura (Dhatura). Atropine is obtained from the plant Atropa Belladona, and strychnine is a poisonous alkaloid found in the seeds of the Nuxvomica plant.
Question 20: Phosphine is liberated from
- A) Methyel parathion
- B) Endosulphan
- C) Aluminium phosphide
- D) Ethyel parathion
Answer
C) Aluminium phosphide
Explanation: Phosphine (PH3) is a highly toxic gas that is liberated from aluminum phosphide, a solid fumigant. Aluminum phosphide is used as a pesticide and insecticide, and when it comes into contact with moisture or acids, it decomposes and releases phosphine gas. The liberation of phosphine from aluminum phosphide can cause severe poisoning and is a potential hazard in forensic investigations involving this compound.
Question 21: Stass otto process is used for the extraction of:
- A) Ethnol from blood
- B) Poision from viscera
- C) Ptylin from Saliva
- D) Uric Acid from urine
Answer
B) Poision from viscera
Explanation: The Stass-Otto process, also known as the Stas-Otto method, is a classical procedure used for the extraction and detection of alkaloids and other toxic substances from biological materials, particularly viscera (internal organs). This process involves a series of chemical extractions and purification steps to isolate and concentrate the toxic substances present in the viscera, aiding in their identification and analysis.
Question 22: A k 47 catridge is a following type cartridge
- A) Rimmed
- B) Rimless
- C) Semi rimless
- D) Belted
Answer
B) Rimless
Explanation: The AK-47 (Avtomat Kalashnikova) cartridge is a rimless cartridge. In a rimless cartridge, the base of the cartridge case has no rim, and the cartridge is held in place by the extractor groove cut into the cartridge case. This design is commonly used in modern rifle and machine gun cartridges, including the 7.62×39mm cartridge used in the AK-47 rifle.
Question 23: Assertion (A): The range of fire in a shotgun can be determined by the dispersion of pellets
Reason (R): The dispersion of pellets decreases with the increase in range of fire
- A) Both (A) and (R) are true
- B) Both (A) and (R) are false
- C) (A) is false but (R) is true
- D) (A) is true but (R) is false
Answer
D) (A) is true but (R) is false
Explanation:
Assertion (A) is true: The range of fire in a shotgun can be determined by the dispersion of pellets.
Question 24: Arrange the following firearms in an increasing chronological order
- (i) AK-47
- (ii) Match lock gun
- (iii) Percussion lock gun
- (iv) Flint lock gun
Code:
- A) (ii), (iv), (iii) and (i) are correct
- B) (i), (ii), (iii) and (iv) are correct
- C) (ii), (i), (iii) and (iv) are correct
- D) (iv), (ii), (iii) and (i) are correct
Answer
A) (ii), (iv), (iii) and (i) are correct
Explanation: The correct chronological order of the firearms is:
- (ii) Match lock gun
- (iv) Flint lock gun
- (iii) Percussion lock gun
- (i) AK-47
The match lock was one of the earliest firearms, followed by the flint lock, and then the percussion lock. The AK-47 is a modern assault rifle that came much later in the 20th century.
Question 25: Match the following
| List-I | List-II |
|---|---|
| (a) RDX | (i) 2, 4, 6 Trinitrotoluene |
| (b) TNT | (ii) Cyclotetra methylene tetra nitra amine |
| (c) PETN | (iii) Cyclo tri-methylene trinitra amine |
| (d) HMX | (iv) Penta erythritol tetranitrate |
Code: (a) (b) (c) (d)
- A) (i) (ii) (iii) (iv)
- B) (iv) (i) (ii) (iii)
- C) (iii) (i) (iv) (ii)
- D) (ii) (iii) (i) (iv)
Answer
C) (iii) (i) (iv) (ii)
Explanation: The correct matching is:
- (a) RDX – (iii) Cyclo tri-methylene trinitra amine
- (b) TNT – (i) 2, 4, 6 Trinitrotoluene
- (c) PETN – (iv) Penta erythritol tetranitrate
- (d) HMX – (ii) Cyclotetra methylene tetra nitra amine
RDX is the abbreviation for Cyclotrimethylenetrinitramine, TNT stands for 2,4,6-Trinitrotoluene, PETN is Pentaerythritol tetranitrate, and HMX is Cyclotetramethylene tetranitramine.