JKSSB Assistant Scientific Officer (Ballistics) 2024 Solved Question Paper

Question 1

The prime work of investigating officer is based on which of the following principle?

Accepted Answer

Option B: Principle of exchange. Locard's Principle of Exchange states that 'every contact leaves a trace', which forms the fundamental basis of crime scene investigation.

Question 2

Mark the proper sequence of tasks to be completed in a crime scene.

i. Packaging of physical evidence
ii. Securing the scene
iii. Collecting physical evidence
iv. Recognizing physical evidence

Accepted Answer

Option C: ii, iv, iii, i. The correct sequence is: first secure the scene (ii), then recognize/identify evidence (iv), then collect the evidence (iii), and finally package it (i).

Question 3

The Latin word for body of crime is:

Accepted Answer

Option D: corpus delicti. Corpus delicti is a Latin term meaning 'body of the crime', which refers to the principle that a crime must be proven to have occurred before a person can be convicted.

Question 4

A witness who wants the accused to be behind bars for the committed crime is called as

Accepted Answer

Option A: Interested witness. An interested witness is one who has a personal interest in the outcome of the case or in seeing the accused convicted.

Question 5

Which of the following are the basic principles of forensic science?

i. Principle of Exchange
ii. Principle of comparison
iii. Principle of Analysis

Accepted Answer

Option D: i, ii and iii. Forensic science is based on several laws and principles, including the Principle of Exchange (Locard), the Principle of Comparison, and the Principle of Analysis.

Question 6

Which of the following techniques are used to observe psychosomatic changes?

i. Polygraphy
ii. Psychological Stress Evaluator
iii. Brain fingerprinting

Accepted Answer

Option A: i and ii. Polygraphy and the Psychological Stress Evaluator (PSE) measure physiological responses (autonomic nervous system activity) related to psychological stress (psychosomatic changes). Brain fingerprinting measures cognitive brainwaves (P300), which are cognitive/recognition-based rather than psychosomatic/emotional.

Question 7

Match the following:

*List-I (Institution offering courses in forensic science)*
i. Osmania University
ii. Dr. Harisingh Gour University
iii. Bundelkhand University
iv. National Forensic Science University

*List-II (Location)*
a. Sagar, Madhya Pradesh
b. Delhi
c. Hyderabad, Telangana
d. Jhansi, Uttar Pradesh

Accepted Answer

Option C: i-c, ii-a, iii-d, iv-b. The correct matches are: Osmania University is in Hyderabad (i-c); Dr. Harisingh Gour University is in Sagar, MP (ii-a); Bundelkhand University is in Jhansi, UP (iii-d); NFSU has a campus in Delhi (iv-b).

Question 8

Match the following:

*List-I (NFSU Campus)*
i. Bhopal
ii. Delhi
iii. Dharwad
iv. Gandhinagar

*List-II (Number of Departments)*
a. 2
b. 3
c. 6
d. 16

Accepted Answer

Option B: i-a, ii-c, iii-b, iv-d. As per the university configuration, the matching is: Bhopal campus has 2 departments (i-a); Delhi campus has 6 departments (ii-c); Dharwad campus has 3 departments (iii-b); and the main Gandhinagar campus has 16 departments (iv-d).

Question 9

For its use in dissemination of justice, forensic psychology is divided into

i. Clinical
ii. Experimental
iii. Cognitive

Accepted Answer

Option D: i, ii and iii. Forensic psychology encompasses the clinical application (assessment/therapy), experimental research on legal issues, and cognitive studies (such as memory reliability and lie detection) used in justice delivery.

Question 10

Which of the following are the principles of fingerprint analysis?

i. Universal
ii. Individual
iii. Classifiable

Accepted Answer

Option B: ii and iii. The core scientific principles/laws of fingerprint analysis are that fingerprints are Individual (unique to each person) and Classifiable (based on systematic ridge patterns). While prints are virtually universal to humans, 'Universal' is not defined as a core principle of fingerprint identification compared to individuality and classifiability.

Question 11

Which of the following techniques of fingerprint development can be used for porous surfaces?

i. Cyanoacrylate fuming
ii. Silver nitrate method
iii. Ninhydrin method

Accepted Answer

Option B: ii and iii. Silver nitrate and Ninhydrin methods are chemical development techniques used specifically for porous surfaces like paper and cardboard. Cyanoacrylate (superglue) fuming is used for non-porous surfaces like plastic and glass.

Question 12

The Directorate of Forensic Science Services was bifurcated from BPR & D based on the recommendations of

i. Malimath Committee
ii. Padmanabhaiah Committee
iii. National Human Rights Commission

Accepted Answer

Option B: ii and iii. The bifurcation of the Directorate of Forensic Science Services (DFSS) from the Bureau of Police Research & Development (BPR&D) in 2002 was based on the recommendations of the Padmanabhaiah Committee on Police Reforms and the National Human Rights Commission (NHRC).

Question 13

Match the following:

*List-I (CFSL)*
i. Bhopal
ii. Delhi
iii. Hyderabad
iv. Kolkata

*List-II (Year of Establishment)*
a. 1957
b. 1967
c. 1968
d. 2011

Accepted Answer

Option A: i-d, ii-c, iii-b, iv-a. The correct establishment years are: Kolkata CFSL was established in 1957 (iv-a); Hyderabad CFSL in 1967 (iii-b); Delhi CFSL in 1968 (ii-c); and Bhopal CFSL in 2011 (i-d).

Question 14

Arrange the following Forensic Institution as per their year of establishment from older to latest.

a. GEQD Calcutta
b. CFPB Calcutta
c. CFPB, New Delhi
d. GEQD Hyderabad
e. GEQD Shimla

Accepted Answer

Option B: b, e, a, d, c. The correct chronological order of establishment is: CFPB Calcutta (1897) -> GEQD Shimla (1906) -> GEQD Calcutta (1964) -> GEQD Hyderabad (1968) -> CFPB New Delhi (1973). This corresponds to order: b, e, a, d, c.

Question 15

Match the following:

*List-I (State FSL)*
i. Bombay
ii. Delhi
iii. Madras
iv. Srinagar

*List-II (Year of Establishment)*
a. 1958
b. 1959
c. 1964
d. 1993

Accepted Answer

Option C: i-a, ii-d, iii-b, iv-c. The correct matching is: Bombay FSL was established in 1958 (i-a); Delhi FSL in 1993 (ii-d); Madras FSL in 1959 (iii-b); and Srinagar FSL in 1964 (iv-c).

Question 16

Specimen of material collected from crime scene for comparing with the questioned material is called as

Accepted Answer

Option D: Control Sample. A control sample is a specimen of material collected from the crime scene (e.g. from an adjacent, unstained area of a substrate) to compare with the questioned evidence to ensure that background or substrate interference is accounted for.

Question 17

According to Bichat, mode of death due to failure of circulatory system is called as

Accepted Answer

Option D: Syncope. Xavier Bichat classified modes of death into a 'tripod of life'. Failure of the circulatory system (heart) is called Syncope, failure of the nervous system (brain) is Coma, and failure of the respiratory system (lungs) is Asphyxia.

Question 18

The best material to collect liquid samples of suspected accelerants found at crime scene is

Accepted Answer

Option C: Airtight metal container. Suspected liquid accelerants (hydrocarbons like gasoline) must be collected in airtight metal containers (such as clean paint cans) because hydrocarbons can dissolve plastic and glass can break.

Question 19

If a person dies in a psychiatric hospital in Delhi-NCR, the investigation will be carried out by

Accepted Answer

Option B: Magistrate Inquest. Under Section 176 of the Code of Criminal Procedure (CrPC) in India, any death occurring in a psychiatric hospital, prison, or police custody must be investigated by a Judicial or Executive Magistrate (Magistrate Inquest).

Question 20

The definition of document in given at

Accepted Answer

Option A: Section 29 of Indian Penal Code, 1860. The definition of 'document' is provided under Section 29 of the Indian Penal Code (IPC), 1860 (as well as under Section 3 of the Indian Evidence Act, 1872).

Question 21

The bluish-purple/purple-red discolouration of skin on dependent part of body after death is called as

Accepted Answer

Option B: Post mortem Hypostasis. Post-mortem hypostasis (also called livor mortis or post-mortem lividity) is the pooling of blood in the dependent parts of the body due to gravity, causing a bluish-purple discoloration.

Question 22

Match the following:

*List-I (Blunt Force Injury)*
i. Abrasion
ii. Contusion
iii. Incision
iv. Laceration

*List-II (Characteristic of Injury)*
a. Effusion of blood into tissue due to ruptured blood vessels
b. Destruction of superficial layer of skin.
c. Tearing or splitting of skin
d. Clean cut through the tissue

Accepted Answer

Option C: i-b, ii-a, iii-d, iv-c. The correct matches are: Abrasion - destruction of superficial layer (i-b); Contusion (bruise) - effusion of blood (ii-a); Incision - clean cut through tissue (iii-d); Laceration - tearing or splitting of skin (iv-c).

Question 23

An unusual type of suicide in which the victim inflicts a single large wound on the abdomen while in sitting position causing evisceration of internal organ, is called as

Accepted Answer

Option D: Harakari. Harakari (or Seppuku) is a traditional Japanese ritual suicide involving disembowelment (cutting open the abdomen and eviscerating internal organs).

Question 24

The full thickness destruction of skin occurs within seconds above a temperature of

Accepted Answer

Option C: 70°C. Thermal studies show that exposure to temperatures above 70°C (158°F) causes full-thickness (third-degree) skin destruction within seconds due to rapid protein denaturation.

Question 25

The English word "Statistics" is derived from

i. Latin word "Status"
ii. Italian word "Statista"
iii. German word "Statistik"

Accepted Answer

Option D: i, ii & iii. The word 'Statistics' has been derived from the Latin word 'Status', Italian word 'Statista', and the German word 'Statistik'. All refer to the political state or data concerning it.

Question 26

Which of the following is NOT a characteristic of data?

Accepted Answer

Option D: Data are personal facts. Statistical data represent aggregate facts rather than individual or personal subjective facts.

Question 27

If the class-intervals in a frequency distribution are 72-73.9, 74-75.9, 76-77.9, 78-79.9, then the mid-value of the class 74-75.9 is:

Accepted Answer

Option C: 74.95. The mid-value (class mark) is calculated as (Lower limit + Upper limit) / 2 = (74 + 75.9) / 2 = 149.9 / 2 = 74.95.

Question 28

Which of the following is a positional average?

Accepted Answer

Option D: Mode. Mode and Median are positional averages because their values depend on their position in the distribution. Arithmetic, Geometric, and Harmonic means are mathematical averages.

Question 29

Marks obtained by 9 students in mathematics as 52, 75, 40, 70, 43, 40, 65, 35, 48. The arithmetic mean is:

Accepted Answer

Option C: 52. Sum of values = 52 + 75 + 40 + 70 + 43 + 40 + 65 + 35 + 48 = 468. Number of observations = 9. Arithmetic Mean = 468 / 9 = 52.

Question 30

Which of the following is considered as the highest level of measurement?

Accepted Answer

Option C: Ratio. The four levels of measurement in increasing order are Nominal, Ordinal, Interval, and Ratio. Ratio scale is the highest level as it has a true zero point.

Question 31

Consider the following statements and choose the best alternative:

Assertion (A): Histogram is a graphical presentation of data
Reason (R): Statistical data can be represented in the form of graphs.

i. A is true
ii. R is true
iii. A is False
iv. R is False

Accepted Answer

Option A: i & ii. Both Assertion A (Histogram is a graphical presentation) and Reason R (data can be represented as graphs) are true statements.

Question 32

Match the following:

*List-I*
i. Mean
ii. Median
iii. Mode
iv. Range

*List-II*
a. Difference between largest and smallest value
b. Precise
c. Middle most term
d. Highest Frequency

Accepted Answer

Option B: i-b, ii-c, iii-d, iv-a. The correct matches are: Mean is a precise mathematical average (i-b); Median is the middlemost term (ii-c); Mode corresponds to the highest frequency (iii-d); Range is the difference between largest and smallest values (iv-a).

Question 33

Match the following:

*List-I*
i. Chi-square test
ii. F-test
iii. T-test
iv. Z-test

*List-II*
a. Analyze the difference between the means of more than two groups.
b. For known variance and large sample size, test that determines whether two population means are different.
c. Used to compare means of two groups
d. Compares two categorical variables.

Accepted Answer

Option D: i-d, ii-a, iii-c, iv-b. The correct matches are: Chi-square test compares categorical variables (i-d); F-test compares means of more than two groups (ii-a); T-test compares means of two groups (iii-c); Z-test compares means for large samples with known variance (iv-b).

Question 34

Which of the following are categorical variable?

i. Age of a person
ii. Gender of a person
iii. Race of a person

Accepted Answer

Option C: ii & iii. Gender and Race are categorical (qualitative) variables. Age is a quantitative (numerical) continuous variable.

Question 35

Arrange the stages of statistical investigation in their correct order.

a. Classification of Data
b. Collection of Data
c. Interpretation of Data
d. Analysis of Data
e. Planning the purpose of Investigation

Accepted Answer

Option A: e, b, a, d, c. The correct logical order of statistical investigation is: Planning (e) -> Collection of Data (b) -> Classification of Data (a) -> Analysis (d) -> Interpretation (c).

Question 36

Which of the following are Non sampling statistical errors?

i. Coverage error
ii. Non-response error
iii. Response error

Accepted Answer

Option D: i, ii & iii. Non-sampling errors are errors that occur during data collection processes other than active sampling. Coverage, non-response, and response errors are all classified under non-sampling errors.

Question 37

The Standard of Length is based on

Accepted Answer

Option C: The speed of light. Since 1983, the meter has been defined internationally as the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second. This is based on the speed of light.

Question 38

Match the following:

*List-I*
i. Microns
ii. Angstroms
iii. Fermi
iv. Kilometers

*List-II*
a. Distance between earth and moon.
b. Inter atomic distance in a solid
c. Size of nucleus.
d. Wavelength of infrared laser.

Accepted Answer

Option A: i-d, ii-b, iii-c, iv-a. The correct matching of length scales is: Microns corresponds to infrared laser wavelength (i-d); Angstroms corresponds to inter-atomic distances (ii-b); Fermi corresponds to nuclear size (iii-c); Kilometers corresponds to Earth-Moon distance (iv-a).

Question 39

A plane travelling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:

Accepted Answer

Option D: 400 m/s south. Initial velocity = 200 m/s North. Final velocity = 200 m/s South (which is -200 m/s North). Change in velocity = Final - Initial = -200 - 200 = -400 m/s North, which is equal to 400 m/s South.

Question 40

Which of the following situations are possible?

i. A body having velocity east and acceleration west.
ii. A body having constant velocity and variable acceleration.
iii. A body having zero velocity and non-zero acceleration.

Accepted Answer

Option B: i & iii. Situation (i) is possible (e.g. decelerating vehicle moving East). Situation (iii) is possible (e.g. a ball at the top of its flight has zero velocity but non-zero gravitational acceleration). Situation (ii) is impossible because constant velocity implies acceleration must be strictly zero.

Question 41

Match the following:

*List-I*
i. kWh
ii. ampere
iii. volt
iv. watt

*List-II*
a. Electric Power.
b. Electric Energy.
c. Potential difference.
d. Electric Current.

Accepted Answer

Option D: i-b, ii-d, iii-c, iv-a. The correct units are: kWh measures Electric Energy (i-b); Ampere measures Electric Current (ii-d); Volt measures Potential Difference (iii-c); Watt measures Electric Power (iv-a).

Question 42

A coulomb is same as

Accepted Answer

Option A: Ampere second. Electric charge (Q) is current (I) multiplied by time (t). Therefore, 1 Coulomb = 1 Ampere × 1 Second.

Question 43

Arrange the following in the increasing chronological order of their occurrence:

i. Michael Faraday discovers electromagnetic induction.
ii. Benjamin Franklin proves lightning is electricity.
iii. Nicolas Tesla develops AC current
iv. Thomas Edison develops DC current

Accepted Answer

Option B: ii, i, iv, iii. The chronological order is: Benjamin Franklin's lightning experiment (1752, ii) -> Michael Faraday discovers electromagnetic induction (1831, i) -> Thomas Edison develops DC (1882, iv) -> Nikola Tesla develops AC (1888, iii). Thus, the order is ii, i, iv, iii.

Question 44

Charge is distributed uniformly along a long straight wire. The electric field at 2cm from the wire is 20 newton/coulomb. The electric field at 4cm from the wire is:

Accepted Answer

Option B: 10 newton/coulomb. For an infinite line charge, the electric field (E) is inversely proportional to distance (r) from the wire: E = λ / (2πε₀r). As distance doubles (from 2cm to 4cm), the electric field halves (from 20 N/C to 10 N/C).

Question 45

Match the following:

*List-I*
i. Biot-Savart Law
ii. Fleming's Left-hand rule
iii. Fleming's Right-hand rule
iv. Right hand thumb rule

*List-II*
a. Direction of induced current.
b. Direction of magnetic lines due to current.
c. Direction of force due to magnetic induction
d. Magnitude and direction of magnetic induction

Accepted Answer

Option C: i-d, ii-c, iii-a, iv-b. The correct matches are: Biot-Savart Law gives magnitude/direction of magnetic induction (i-d); Fleming's Left-hand rule gives the direction of force on a current in a magnetic field (ii-c); Fleming's Right-hand rule gives the direction of induced current (iii-a); Right hand thumb rule gives the direction of magnetic lines (iv-b).

Question 46

If "r" is the distance of a moving charge, the magnitude of magnetic field produced by the charge is proportional to:

Accepted Answer

Option D: 1/r². According to the Biot-Savart law, the magnetic field produced by a moving charge is inversely proportional to the square of the distance (r) from the charge (B ∝ 1/r²).

Question 47

Two electrons travelling with same speed. The magnetic field is zero at the mid-point between them. This means,

Accepted Answer

Option B: They are travelling along parallel lines in the same direction.. By the right-hand rule, when two negative charges (electrons) travel at equal speed along parallel lines in the same direction, the magnetic fields they produce at the exact midpoint are equal in magnitude but opposite in direction, cancelling each other out to zero.

Question 48

According to Faraday's Law, an induced emf is proportional to

Accepted Answer

Option C: The rate of change of magnetic flux. Faraday's Law of electromagnetic induction states that the induced electromotive force (emf) in a closed circuit is directly proportional to the time rate of change of magnetic flux through the circuit.

Question 49

A footprint classification system is required for filing the footprints of

i. New born babies
ii. Military airmen
iii. People lacking arms

Accepted Answer

Option D: i, ii & iii. Footprint classification systems are used for filing records of newborn babies (hospital security), military airmen (for identification after plane crashes/burns), and individuals lacking arms (who cannot provide fingerprints).

Question 50

The main footprint classification systems used over the years are

i. FBI's Footprint Classification System
ii. Vucetich Footprint Classification System
iii. Chatterjee's Footprint Classification System

Accepted Answer

Option B: i & iii. The primary footprint classification systems used historically in forensic science are the FBI's Footprint Classification System and Chatterjee's Footprint Classification System (developed in India). Juan Vucetich developed a fingerprint classification system, not a footprint system.

Question 51

Ordinarily, the footmarks are inadequate as evidence because,

i. Footmarks are incomplete
ii. Footmarks do not carry ridge details
iii. Footmarks carry very few individualizing features.

Accepted Answer

Option A: i & ii. Ordinarily, bare footprints at crime scenes are inadequate as conclusive evidence because they are often incomplete and do not contain the fine, unique friction ridge details needed for positive identification (unlike fingerprints).

Question 52

Which of the following materials can be used for casting footprint impressions in snow

i. Molten wax
ii. Plaster of Paris solution
iii. Molten Sulphur.

Accepted Answer

Option B: i & iii. Molten sulfur and molten wax can be used to cast impressions in snow because they solidify rapidly without generating excessive heat that would melt the details. Plaster of Paris solution is water-based and generates heat during its setting process, which would melt the snow and destroy the print detail.

Question 53

Which of the following statements are correct?

i. The art of tracking through gait pattern is practiced in various parts of India by certain families.
ii. The trackers are, by and large, uneducated persons.
iii. The trackers do not take any extensive measurements.

Accepted Answer

Option D: i, ii & iii. Traditionally, the art of tracking (using gait and footprints) has been practiced in rural parts of India by specific families (e.g. puggees). Trackers are usually uneducated and rely on visual cues, experience, and instinct rather than taking extensive scientific measurements.

Question 54

In scientific study of gait pattern, which of the following characteristics are noted?

i. Dimensions of Mark
ii. Pressure points
iii. Pressure defects

Accepted Answer

Option D: i, ii & iii. A scientific analysis of a gait pattern involves checking the dimensions of the prints, the specific pressure points of the foot during stride, and any pressure defects (uneven weight distribution or gait abnormalities).

Question 55

For evaluating gait pattern evidence by forensic science laboratory staff, the minimum number of consecutive foot or footwear marks required is:

Accepted Answer

Option C: 3. To perform an analysis of a gait pattern (step length, stride length, step angle, etc.), a minimum sequence of 3 consecutive prints is required by forensic examiners.

Question 56

Match the following:

*List-I*
i. Casting track marks
ii. Lifting track marks
iii. Photograph of track marks
iv. Tracing track marks

*List-II*
a. Plastic sheet is preferable.
b. Easy to do under artificial light.
c. A bromide paper sheet can be used for.
d. Plasticine can be used for.

Accepted Answer

Option A: i-d, ii-c, iii-b, iv-a. The correct matches are: Casting track marks - Plasticine can be used (i-d); Lifting track marks - Bromide paper can be used (ii-c); Photograph - oblique/artificial light is helpful (iii-b); Tracing - plastic sheet is preferable (iv-a).

Question 57

For collecting impression evidence, the first electrostatic dust lifting device was created by:

Accepted Answer

Option A: Kato Masao. Kato Masao, a Japanese police officer, developed the first formal electrostatic dust print lifting device around 1970, which improved on the static celluloid sheet concept of Sancyasu Toma.

Question 58

The photographic technique to record the whole tread of a tyre is called as

Accepted Answer

Option B: Periphography. Periphography is a specialized photographic technique used to capture the entire circumferential tread pattern of a tyre (or any cylindrical surface) as a single flat image.

Question 59

Which of the following statements are correct?

i. Striation is a type of tool mark.
ii. An instrument used to study striations on different objects is known as striagraph.
iii. For comparing striation marks, striagraphy is better than comparison microscope.

Accepted Answer

Option A: i & ii. Statements i and ii are correct. A striation is a scratch-type tool mark, and a striagraph is a mechanical tracing device used to record them. Statement iii is incorrect because the comparison microscope is the standard, most widely accepted and superior tool for comparing striations in forensics.

Question 60

Match the following:

*List-I*
i. Borosil Glass
ii. Bottle Glass
iii. Optical Glass
iv. Plate Glass

*List-II*
a. PbO.
b. B₂O₃
c. BaO.
d. MgO.

Accepted Answer

Option C: i-b, ii-c, iii-a, iv-d. The correct matching is: Borosilicate glass contains B₂O₃ (i-b); Bottle glass contains BaO (ii-c); Optical (flint) glass contains PbO (iii-a); Plate glass contains MgO (iv-d).

Question 61

Match the following:

*List-I (Element)*
i. Arsenic
ii. Cobalt
iii. Chromium
iv. Titanium

*List-II (Effect on Glass)*
a. Air Bubble removal
b. Blue colour
c. Decolourisation
d. Green Colour

Accepted Answer

Option B: i-a, ii-b, iii-d, iv-c. The matching is: Arsenic is used for air bubble removal (i-a); Cobalt imparts a blue color (ii-b); Chromium imparts a green color (iii-d); Titanium is used for decolorisation (iv-c).

Question 62

Long curved ridges on the broken surface of glass are termed as:

Accepted Answer

Option A: Rib marks. Rib marks (or concentric rib lines) are curved ridges that form on the broken edges of glass fractures, running perpendicular to radial crack lines.

Question 63

Which of the following statements are correct?

i. Glass is an inorganic product of fusion, cooled to a rigid condition without crystallization.
ii. Glass is strong in compression.
iii. Glass is strong in tension.

Accepted Answer

Option A: i & ii. Statements i and ii are correct. Glass is an amorphous solid that is strong when subjected to compression, but behaves weakly in tension (brittle failure occurs easily under pulling forces).

Question 64

Match the following:

*List-I*
i. Flat glass
ii. Float glass
iii. Laminated glass
iv. Toughened glass

*List-II*
a. Fourcault process
b. Liquid tin bed
c. Processed by tempering
d. Sandwiched plastic sheet

Accepted Answer

Option A: i-a, ii-b, iii-d, iv-c. The correct matching is: Flat glass - Fourcault process (i-a); Float glass - Liquid tin bed (ii-b); Laminated glass - Sandwiched plastic sheet (iii-d); Toughened glass - Processed by tempering (iv-c).

Assistant Scientific Officer (Ballistics)2024

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JKSSB — Assistant Scientific Officer (Ballistics) (2024)

The prime work of investigating officer is based on which of the following principle?

Mark the proper sequence of tasks to be completed in a crime scene.i. Packaging of physical evidenceii. Securing the sceneiii. Collecting physical evidenceiv. Recognizing physical evidence

The Latin word for body of crime is:

A witness who wants the accused to be behind bars for the committed crime is called as

Which of the following are the basic principles of forensic science?i. Principle of Exchangeii. Principle of comparisoniii. Principle of Analysis

Which of the following techniques are used to observe psychosomatic changes?i. Polygraphyii. Psychological Stress Evaluatoriii. Brain fingerprinting

Match the following:List-I (Institution offering courses in forensic science)i. Osmania Universityii. Dr. Harisingh Gour Universityiii. Bundelkhand Universityiv. National Forensic Science UniversityList-II (Location)a. Sagar, Madhya Pradeshb. Delhic. Hyderabad, Telanganad. Jhansi, Uttar Pradesh

Match the following:List-I (NFSU Campus)i. Bhopalii. Delhiiii. Dharwadiv. GandhinagarList-II (Number of Departments)a. 2b. 3c. 6d. 16

For its use in dissemination of justice, forensic psychology is divided intoi. Clinicalii. Experimentaliii. Cognitive

Which of the following are the principles of fingerprint analysis?i. Universalii. Individualiii. Classifiable

Which of the following techniques of fingerprint development can be used for porous surfaces?i. Cyanoacrylate fumingii. Silver nitrate methodiii. Ninhydrin method

The Directorate of Forensic Science Services was bifurcated from BPR & D based on the recommendations ofi. Malimath Committeeii. Padmanabhaiah Committeeiii. National Human Rights Commission

Match the following:List-I (CFSL)i. Bhopalii. Delhiiii. Hyderabadiv. KolkataList-II (Year of Establishment)a. 1957b. 1967c. 1968d. 2011

Arrange the following Forensic Institution as per their year of establishment from older to latest.a. GEQD Calcuttab. CFPB Calcuttac. CFPB, New Delhid. GEQD Hyderabade. GEQD Shimla

Match the following:List-I (State FSL)i. Bombayii. Delhiiii. Madrasiv. SrinagarList-II (Year of Establishment)a. 1958b. 1959c. 1964d. 1993

Specimen of material collected from crime scene for comparing with the questioned material is called as

According to Bichat, mode of death due to failure of circulatory system is called as

The best material to collect liquid samples of suspected accelerants found at crime scene is

If a person dies in a psychiatric hospital in Delhi-NCR, the investigation will be carried out by

The definition of document in given at

The bluish-purple/purple-red discolouration of skin on dependent part of body after death is called as

An unusual type of suicide in which the victim inflicts a single large wound on the abdomen while in sitting position causing evisceration of internal organ, is called as

The full thickness destruction of skin occurs within seconds above a temperature of

The English word "Statistics" is derived fromi. Latin word "Status"ii. Italian word "Statista"iii. German word "Statistik"

Which of the following is NOT a characteristic of data?

If the class-intervals in a frequency distribution are 72-73.9, 74-75.9, 76-77.9, 78-79.9, then the mid-value of the class 74-75.9 is:

Which of the following is a positional average?

Marks obtained by 9 students in mathematics as 52, 75, 40, 70, 43, 40, 65, 35, 48. The arithmetic mean is:

Which of the following is considered as the highest level of measurement?

Consider the following statements and choose the best alternative:Assertion (A): Histogram is a graphical presentation of dataReason (R): Statistical data can be represented in the form of graphs.i. A is trueii. R is trueiii. A is Falseiv. R is False

Match the following:List-Ii. Meanii. Medianiii. Modeiv. RangeList-IIa. Difference between largest and smallest valueb. Precisec. Middle most termd. Highest Frequency

Which of the following are categorical variable?i. Age of a personii. Gender of a personiii. Race of a person

Arrange the stages of statistical investigation in their correct order.a. Classification of Datab. Collection of Datac. Interpretation of Datad. Analysis of Datae. Planning the purpose of Investigation

Which of the following are Non sampling statistical errors?i. Coverage errorii. Non-response erroriii. Response error

The Standard of Length is based on

Match the following:List-Ii. Micronsii. Angstromsiii. Fermiiv. KilometersList-IIa. Distance between earth and moon.b. Inter atomic distance in a solidc. Size of nucleus.d. Wavelength of infrared laser.

A plane travelling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:

Which of the following situations are possible?i. A body having velocity east and acceleration west.ii. A body having constant velocity and variable acceleration.iii. A body having zero velocity and non-zero acceleration.

Match the following:List-Ii. kWhii. ampereiii. voltiv. wattList-IIa. Electric Power.b. Electric Energy.c. Potential difference.d. Electric Current.

A coulomb is same as

Arrange the following in the increasing chronological order of their occurrence:i. Michael Faraday discovers electromagnetic induction.ii. Benjamin Franklin proves lightning is electricity.iii. Nicolas Tesla develops AC currentiv. Thomas Edison develops DC current

Charge is distributed uniformly along a long straight wire. The electric field at 2cm from the wire is 20 newton/coulomb. The electric field at 4cm from the wire is:

If "r" is the distance of a moving charge, the magnitude of magnetic field produced by the charge is proportional to:

Two electrons travelling with same speed. The magnetic field is zero at the mid-point between them. This means,

According to Faraday's Law, an induced emf is proportional to

A footprint classification system is required for filing the footprints ofi. New born babiesii. Military airmeniii. People lacking arms

The main footprint classification systems used over the years arei. FBI's Footprint Classification Systemii. Vucetich Footprint Classification Systemiii. Chatterjee's Footprint Classification System

Ordinarily, the footmarks are inadequate as evidence because,i. Footmarks are incompleteii. Footmarks do not carry ridge detailsiii. Footmarks carry very few individualizing features.

Which of the following materials can be used for casting footprint impressions in snowi. Molten waxii. Plaster of Paris solutioniii. Molten Sulphur.

Which of the following statements are correct?i. The art of tracking through gait pattern is practiced in various parts of India by certain families.ii. The trackers are, by and large, uneducated persons.iii. The trackers do not take any extensive measurements.

In scientific study of gait pattern, which of the following characteristics are noted?i. Dimensions of Markii. Pressure pointsiii. Pressure defects

For evaluating gait pattern evidence by forensic science laboratory staff, the minimum number of consecutive foot or footwear marks required is:

Match the following:List-Ii. Casting track marksii. Lifting track marksiii. Photograph of track marksiv. Tracing track marksList-IIa. Plastic sheet is preferable.b. Easy to do under artificial light.c. A bromide paper sheet can be used for.d. Plasticine can be used for.

For collecting impression evidence, the first electrostatic dust lifting device was created by:

The photographic technique to record the whole tread of a tyre is called as

Which of the following statements are correct?i. Striation is a type of tool mark.ii. An instrument used to study striations on different objects is known as striagraph.iii. For comparing striation marks, striagraphy is better than comparison microscope.

Match the following:List-Ii. Borosil Glassii. Bottle Glassiii. Optical Glassiv. Plate GlassList-IIa. PbO.b. B₂O₃c. BaO.d. MgO.

Match the following:List-I (Element)i. Arsenicii. Cobaltiii. Chromiumiv. TitaniumList-II (Effect on Glass)a. Air Bubble removalb. Blue colourc. Decolourisationd. Green Colour

Long curved ridges on the broken surface of glass are termed as:

Which of the following statements are correct?i. Glass is an inorganic product of fusion, cooled to a rigid condition without crystallization.ii. Glass is strong in compression.iii. Glass is strong in tension.

Match the following:List-Ii. Flat glassii. Float glassiii. Laminated glassiv. Toughened glassList-IIa. Fourcault processb. Liquid tin bedc. Processed by temperingd. Sandwiched plastic sheet

Which of the following physical property is most valuable in distinguishing small glass fragments?

Best material for casting tool mark is

As per Indian Arms Act, 1959, which of the following items are included in the definition of firearms?i. Artilleryii. Carriages for mounting, transporting and serving artilleryiii. Accessory of firearm designed to diminish the noise caused by firing

Which of the following statements are true for small arms?i. Can be easily handled and operated by a single person.ii. Must be smaller than 10 inches in length.iii. Includes pistol and revolvers.

In a revolver, the number of chambers is:

A tapering surface which connects the bore and chamber of some firearms is termed as:

Match the following:List-I (Location of Firing pin)i. Breach blockii. Bolt Headiii. Hammeriv. Moving Breech blockList-II (Type of firearm)a. Bolt action riflesb. Revolversc. Automatic firearmsd. Shotguns

Which of the following statements are true for Breech face?i. It is the area surrounding the firing pin hole.ii. It seals the barrel from chamber side.iii. It comes in close contact with the base of the cartridge.

Which of the following marks are usually present on a cartridge fired from a good quality firearm?i. Firing pin mark.ii. Breech face.iii. Chamber marks.

The internal diameter of a barrel is known as:i. Boreii. Calibreiii. Gauge

Which of the following statement is true for Barrel choke?i. It is the reducing of bore of a shotgun at the breech endii. Choke increases the effective range of a shotgun.iii. Reduction of diameter by one millimeter is called as full choke.

A firearm can have the following type of barrels:i. Smooth boreii. Rifled boreiii. Smoothbore with partial rifling

Which of the following statements are true for shotguns?i. A shotgun is a short-range firearm.ii. Shotgun gives accurate aim when a single projectile is firediii. Spreading of pellets increases with increase in range of fire.

Which of the following means ammunition, as per Indian Arms Act, 1959?i. Rocket.ii. Noxious liquidiii. Charges for firearm.

The active constituents of smokeless powder are?i. Nitroglycerine.ii. Nitrocellulose.iii. Sulphur.

In firearms, the powders with increasing rate of burning are called as:

Mark the proper sequence of tasks to be completed in a crime scene.

i. Packaging of physical evidence
ii. Securing the scene
iii. Collecting physical evidence
iv. Recognizing physical evidence

Which of the following are the basic principles of forensic science?

i. Principle of Exchange
ii. Principle of comparison
iii. Principle of Analysis

Which of the following techniques are used to observe psychosomatic changes?

i. Polygraphy
ii. Psychological Stress Evaluator
iii. Brain fingerprinting

Match the following:

List-I (NFSU Campus)
i. Bhopal
ii. Delhi
iii. Dharwad
iv. Gandhinagar

List-II (Number of Departments)
a. 2
b. 3
c. 6
d. 16

For its use in dissemination of justice, forensic psychology is divided into

i. Clinical
ii. Experimental
iii. Cognitive

Which of the following are the principles of fingerprint analysis?

i. Universal
ii. Individual
iii. Classifiable

Which of the following techniques of fingerprint development can be used for porous surfaces?

i. Cyanoacrylate fuming
ii. Silver nitrate method
iii. Ninhydrin method

The Directorate of Forensic Science Services was bifurcated from BPR & D based on the recommendations of

i. Malimath Committee
ii. Padmanabhaiah Committee
iii. National Human Rights Commission

Match the following:

List-I (CFSL)
i. Bhopal
ii. Delhi
iii. Hyderabad
iv. Kolkata

List-II (Year of Establishment)
a. 1957
b. 1967
c. 1968
d. 2011

Arrange the following Forensic Institution as per their year of establishment from older to latest.

a. GEQD Calcutta
b. CFPB Calcutta
c. CFPB, New Delhi
d. GEQD Hyderabad
e. GEQD Shimla

Match the following:

List-I (State FSL)
i. Bombay
ii. Delhi
iii. Madras
iv. Srinagar

List-II (Year of Establishment)
a. 1958
b. 1959
c. 1964
d. 1993

The English word "Statistics" is derived from

i. Latin word "Status"
ii. Italian word "Statista"
iii. German word "Statistik"

Consider the following statements and choose the best alternative:

Assertion (A): Histogram is a graphical presentation of data
Reason (R): Statistical data can be represented in the form of graphs.

i. A is true
ii. R is true
iii. A is False
iv. R is False

Match the following:

List-I
i. Mean
ii. Median
iii. Mode
iv. Range

List-II
a. Difference between largest and smallest value
b. Precise
c. Middle most term
d. Highest Frequency

Which of the following are categorical variable?

i. Age of a person
ii. Gender of a person
iii. Race of a person

Arrange the stages of statistical investigation in their correct order.

a. Classification of Data
b. Collection of Data
c. Interpretation of Data
d. Analysis of Data
e. Planning the purpose of Investigation

Which of the following are Non sampling statistical errors?

i. Coverage error
ii. Non-response error
iii. Response error

Match the following:

List-I
i. Microns
ii. Angstroms
iii. Fermi
iv. Kilometers

List-II
a. Distance between earth and moon.
b. Inter atomic distance in a solid
c. Size of nucleus.
d. Wavelength of infrared laser.

Which of the following situations are possible?

i. A body having velocity east and acceleration west.
ii. A body having constant velocity and variable acceleration.
iii. A body having zero velocity and non-zero acceleration.

Match the following:

List-I
i. kWh
ii. ampere
iii. volt
iv. watt

List-II
a. Electric Power.
b. Electric Energy.
c. Potential difference.
d. Electric Current.

Arrange the following in the increasing chronological order of their occurrence:

i. Michael Faraday discovers electromagnetic induction.
ii. Benjamin Franklin proves lightning is electricity.
iii. Nicolas Tesla develops AC current
iv. Thomas Edison develops DC current

A footprint classification system is required for filing the footprints of

i. New born babies
ii. Military airmen
iii. People lacking arms

The main footprint classification systems used over the years are

i. FBI's Footprint Classification System
ii. Vucetich Footprint Classification System
iii. Chatterjee's Footprint Classification System

Ordinarily, the footmarks are inadequate as evidence because,

i. Footmarks are incomplete
ii. Footmarks do not carry ridge details
iii. Footmarks carry very few individualizing features.

Which of the following materials can be used for casting footprint impressions in snow

i. Molten wax
ii. Plaster of Paris solution
iii. Molten Sulphur.

Which of the following statements are correct?

i. The art of tracking through gait pattern is practiced in various parts of India by certain families.
ii. The trackers are, by and large, uneducated persons.
iii. The trackers do not take any extensive measurements.

In scientific study of gait pattern, which of the following characteristics are noted?

i. Dimensions of Mark
ii. Pressure points
iii. Pressure defects

Match the following:

List-I
i. Casting track marks
ii. Lifting track marks
iii. Photograph of track marks
iv. Tracing track marks

List-II
a. Plastic sheet is preferable.
b. Easy to do under artificial light.
c. A bromide paper sheet can be used for.
d. Plasticine can be used for.

Which of the following statements are correct?

i. Striation is a type of tool mark.
ii. An instrument used to study striations on different objects is known as striagraph.
iii. For comparing striation marks, striagraphy is better than comparison microscope.

Match the following:

List-I
i. Borosil Glass
ii. Bottle Glass
iii. Optical Glass
iv. Plate Glass

List-II
a. PbO.
b. B₂O₃
c. BaO.
d. MgO.

Match the following:

List-I (Element)
i. Arsenic
ii. Cobalt
iii. Chromium
iv. Titanium

List-II (Effect on Glass)
a. Air Bubble removal
b. Blue colour
c. Decolourisation
d. Green Colour

Which of the following statements are correct?

i. Glass is an inorganic product of fusion, cooled to a rigid condition without crystallization.
ii. Glass is strong in compression.
iii. Glass is strong in tension.

Match the following:

List-I
i. Flat glass
ii. Float glass
iii. Laminated glass
iv. Toughened glass

List-II
a. Fourcault process
b. Liquid tin bed
c. Processed by tempering
d. Sandwiched plastic sheet

As per Indian Arms Act, 1959, which of the following items are included in the definition of firearms?

i. Artillery
ii. Carriages for mounting, transporting and serving artillery
iii. Accessory of firearm designed to diminish the noise caused by firing

Which of the following statements are true for small arms?

i. Can be easily handled and operated by a single person.
ii. Must be smaller than 10 inches in length.
iii. Includes pistol and revolvers.

Match the following:

List-I (Location of Firing pin)
i. Breach block
ii. Bolt Head
iii. Hammer
iv. Moving Breech block

List-II (Type of firearm)
a. Bolt action rifles
b. Revolvers
c. Automatic firearms
d. Shotguns

Which of the following statements are true for Breech face?

i. It is the area surrounding the firing pin hole.
ii. It seals the barrel from chamber side.
iii. It comes in close contact with the base of the cartridge.

Which of the following marks are usually present on a cartridge fired from a good quality firearm?

i. Firing pin mark.
ii. Breech face.
iii. Chamber marks.

The internal diameter of a barrel is known as:

i. Bore
ii. Calibre
iii. Gauge

Which of the following statement is true for Barrel choke?

i. It is the reducing of bore of a shotgun at the breech end
ii. Choke increases the effective range of a shotgun.
iii. Reduction of diameter by one millimeter is called as full choke.

A firearm can have the following type of barrels:

i. Smooth bore
ii. Rifled bore
iii. Smoothbore with partial rifling

Which of the following statements are true for shotguns?

i. A shotgun is a short-range firearm.
ii. Shotgun gives accurate aim when a single projectile is fired
iii. Spreading of pellets increases with increase in range of fire.

Which of the following means ammunition, as per Indian Arms Act, 1959?

i. Rocket.
ii. Noxious liquid
iii. Charges for firearm.

The active constituents of smokeless powder are?

i. Nitroglycerine.
ii. Nitrocellulose.
iii. Sulphur.

Which of the following are the constituents of gunpowder?

i. Sodium Nitrate
ii. Sulphur
iii. Charcoal.

Which of the following statements are true for gun powder?

i. Suitable for high velocity ammunition
ii. It gives irregular ballistics
iii. Leaves considerable amount of solid residue

Arrange the following process of firing in increasing order of chronology.

i. Triggering
ii. Striking percussion cap
iii. Hammer release
iv. Ignition of propellent

Match the following:

List-I (Detectable Metal)
i. Antimony
ii. Copper
iii. Iron
iv. Nitrates

List-II (Source)
a. Primers
b. Barrel
c. Propellants
d. Bullet jacket

Match the following:

List-I (Test)
i. Dermal Nitrate Test
ii. Harrison and Gilroy's Test
iii. Price's Spot Test
iv. Walker's Test

List-II (Reagent)
a. Diphenylamine
b. 2 naphthylamine
c. Triphenylmethyl arsonium iodide
d. Sodium rhodizonate

Match the following:

List-I (Bullet Velocity Zone)
i. Under 400 m/s
ii. 400 to 600 m/s
iii. 600 to 1100 m/s
iv. Beyond 1100 m/s

List-II (Wounding phenomena)
a. Instantaneous death
b. Explosive wound
c. No abnormal wounding phenomena
d. Expanding bullets starts mushrooming

Arrange the following firearms with chronological order of their invention.

i. Match Lock
ii. Wheel Lock
iii. Hand Canon
iv. 0.303 SLR

Penetration of bullet inside the target depends on

i. Cross sectional area of projectile
ii. Velocity of projectile
iii. Weight of projectile

The factor affects the path of the projectile are

i. Air resistance
ii. Force of gravity
iii. Spin

Scorching is also known as

i. Singeing
ii. Burning
iii. Charring

Tattooing is also known as

i. Blackening
ii. Peppering
iii. Stippling

Which of the following are characteristics wounds caused by firearms?

i. Rat holes
ii. Key holes
iii. Explosive wound