Question 1

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

Accepted Answer

The correct answer is: 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

Which of the following are the principles of fingerprint analysis?

i. Universal
ii. Individual
iii. Classifiable

Accepted Answer

The correct answer is: 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 3

The phenomenon of deflection of bullet due to striking a solid target at low angle

Accepted Answer

The correct answer is: Ricochet. Ricochet is the rebound, bounce, or deflection of a projectile off a flat or solid surface at a shallow angle.

Question 4

The function of primer is

Accepted Answer

The correct answer is: To ignite the main charge. The primer contains a small amount of sensitive primary explosive that detonates upon impact, sending a flame to ignite the main propellant powder charge.

Question 5

Which one is used as a primer

Accepted Answer

The correct answer is: Lead azide. Lead azide is a highly sensitive primary explosive commonly used in primer caps to initiate detonation upon mechanical impact.

Question 6

Wad in the cartridge serves the purpose of:

Accepted Answer

The correct answer is: To prevent from jerk. The wad serves as a cushion and barrier in shotgun shells. The compressible section of the wad helps absorb the initial peak shock wave (the 'jerk') upon ignition, protecting the barrel and stabilizing pressure.

Question 7

Degree of twist in case of rifling is called as

Accepted Answer

The correct answer is: Pitch. The pitch of rifling is the distance inside the barrel over which the lands and grooves make one complete helical turn (360 degrees rotation).

Question 8

Lead in discharge residue best identified by

Accepted Answer

The correct answer is: X-ray radiography. Lead is highly radiopaque. In forensic medicine and ballistics, X-ray radiography is highly effective for identifying the presence, path, and deposits of lead residue/bullets in tissue.

Question 9

Backward movement of firearm during firing is termed as

Accepted Answer

The correct answer is: Recoil. Recoil is the rearward movement of a firearm caused by Newton's third law of motion (action and reaction) when the bullet is projected forward.

Question 10

The velocity of bullet at the time of impact is called as

Accepted Answer

The correct answer is: Striking velocity. Striking velocity is the speed of the projectile at the exact instant it hits the target.

Question 11

Penetration of bullet inside the target depends on

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

Accepted Answer

The correct answer is: i, ii & iii. Penetration depth depends on the sectional density (weight / cross-sectional area) and the kinetic energy (which depends on velocity). Therefore, all three factors affect penetration.

Question 12

The factor affects the path of the projectile are

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

Accepted Answer

The correct answer is: i, ii & iii. The trajectory (path) of a bullet is affected by gravity (vertical drop), air resistance/drag (loss of speed), and gyroscopic spin (stabilization and drift).

Question 13

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

The correct answer is: 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 14

Air resistance affects least to

Accepted Answer

The correct answer is: Boat tailed bullets. Boat-tailed bullets have a tapered base that reduces base drag and turbulence, experiencing the least overall air resistance compared to flat-base or round-nose designs.

Question 15

The tendency of a projectile to suck backward to fill up the vacuum is called as

Accepted Answer

The correct answer is: Base drag. Base drag is the aerodynamic drag caused by the low pressure/vacuum area formed behind the flat base of a moving bullet, which pulls it backward.

Question 16

The angle between the direction of motion of projectile and central axis of projectile is called as

Accepted Answer

The correct answer is: Yaw. Yaw is the angle between the longitudinal axis of the projectile and its actual vector of travel.

Question 17

The lateral deviation of trajectory of projectile from the plane of departure is known as

Accepted Answer

The correct answer is: Drift. Drift is the lateral (sideways) deviation of a spinning bullet from the vertical plane of departure, primarily caused by gyroscopic spin and air interaction.

Question 18

The most impressive and effective method to evaluate GSR is

Accepted Answer

The correct answer is: Scanning Electron Microscope. Scanning Electron Microscopy with Energy-Dispersive X-ray (SEM-EDX) is the gold standard for GSR analysis because it allows identification of both the chemical composition and the spherical morphology of individual particles.

Question 19

Scorching is also known as

i. Singeing
ii. Burning
iii. Charring

Accepted Answer

The correct answer is: i, ii & iii. Scorching (the thermal damage caused by muzzle flash gases) is also referred to as singeing (specifically for hair) or burning/charring (for fibers and tissue).

Question 20

Tattooing is also known as

i. Blackening
ii. Peppering
iii. Stippling

Accepted Answer

The correct answer is: ii & iii. Tattooing is the embedding of unburnt powder grains in the skin, which is also known as stippling or peppering. Blackening is the deposit of soot/smoke, which can be wiped off, unlike tattooing.

Question 21

The mathematical relation between diameter of dispersed pellets (D) and range (R) of fire of a half choke standard firearms is

Accepted Answer

The correct answer is: D=3R. In standard ballistics, the pattern diameter (D in cm) for a half-choke shotgun is roughly 3 times the range of fire (R in meters): D = 3R. (Contrast: Cylinder is 4R, Full choke is 2R/2.5R).

Question 22

Which of the following are characteristics wounds caused by firearms?

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

Accepted Answer

The correct answer is: i, ii & iii. All three are characteristic gunshot wounds: Rat holes (close-range shotgun wound), Key holes (tumbling bullet entries), and Explosive wounds (high-velocity or contact head wounds).

Question 23

Penetration power of a firearm and its ammunition is measured from the penetration of the projectile in

Accepted Answer

The correct answer is: Soft pine wood. Historically, the standard material used to empirically measure and compare the penetration power of bullets is dry, soft pine wood boards of a standard thickness.

Question 24

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

The correct answer is: 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 25

The distance up to which a shooter can take aim and make a kill is called as

Accepted Answer

The correct answer is: Effective range. Effective range is the maximum distance at which a shooter can reasonably expect to hit and disable/kill a target using the weapon system.

Question 26

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

The correct answer is: 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 27

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

The correct answer is: 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 28

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

The correct answer is: 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 29

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

Accepted Answer

The correct answer is: 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 30

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

Accepted Answer

The correct answer is: 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 31

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

Accepted Answer

The correct answer is: 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 32

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

Accepted Answer

The correct answer is: 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 33

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

The correct answer is: 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 34

The definition of document in given at

Accepted Answer

The correct answer is: 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 35

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

Accepted Answer

The correct answer is: 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 36

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

The correct answer is: 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 37

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

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

Question 38

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

Accepted Answer

The correct answer is: 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 39

The English word "Statistics" is derived from

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

Accepted Answer

The correct answer is: 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 40

Which of the following is NOT a characteristic of data?

Accepted Answer

The correct answer is: Data are personal facts. Statistical data represent aggregate facts rather than individual or personal subjective facts.

Question 41

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

The correct answer is: 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 42

Which of the following is a positional average?

Accepted Answer

The correct answer is: 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 43

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

Accepted Answer

The correct answer is: 52. Sum of values = 52 + 75 + 40 + 70 + 43 + 40 + 65 + 35 + 48 = 468. Number of observations = 9. Arithmetic Mean = 468 / 9 = 52.

Question 44

The Latin word for body of crime is:

Accepted Answer

The correct answer is: 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 45

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

Accepted Answer

The correct answer is: 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 46

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

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

Question 47

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

The correct answer is: 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 48

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

The correct answer is: 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 49

Which of the following are categorical variable?

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

Accepted Answer

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

Question 50

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

The correct answer is: 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 51

Which of the following are Non sampling statistical errors?

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

Accepted Answer

The correct answer is: 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 52

The Standard of Length is based on

Accepted Answer

The correct answer is: 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 53

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

The correct answer is: 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 54

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

Accepted Answer

The correct answer is: 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 55

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

Accepted Answer

The correct answer is: 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 56

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

The correct answer is: 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 57

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

The correct answer is: 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 58

A coulomb is same as

Accepted Answer

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

Question 59

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

The correct answer is: 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 60

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

The correct answer is: 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 61

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

The correct answer is: 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 62

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

Accepted Answer

The correct answer is: 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 63

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

Accepted Answer

The correct answer is: 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 64

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

Accepted Answer

The correct answer is: 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.

🧪 Assistant Scientific Officer (Ballistics)2024

📝 All 120 QuestionsFree • No Login Required

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

Which of the following are the principles of fingerprint analysis? i. Universal ii. Individual iii. Classifiable

The phenomenon of deflection of bullet due to striking a solid target at low angle

The function of primer is

Which one is used as a primer

Wad in the cartridge serves the purpose of:

Degree of twist in case of rifling is called as

Lead in discharge residue best identified by

Backward movement of firearm during firing is termed as

The velocity of bullet at the time of impact is called as

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

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

Air resistance affects least to

The tendency of a projectile to suck backward to fill up the vacuum is called as

The angle between the direction of motion of projectile and central axis of projectile is called as

The lateral deviation of trajectory of projectile from the plane of departure is known as

The most impressive and effective method to evaluate GSR is

Scorching is also known as i. Singeing ii. Burning iii. Charring

Tattooing is also known as i. Blackening ii. Peppering iii. Stippling

The mathematical relation between diameter of dispersed pellets (D) and range (R) of fire of a half choke standard firearms is

Which of the following are characteristics wounds caused by firearms? i. Rat holes ii. Key holes iii. Explosive wound

Penetration power of a firearm and its ammunition is measured from the penetration of the projectile in

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

The distance up to which a shooter can take aim and make a kill is called as

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

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

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

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 from i. 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:

The Latin word for body of crime 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 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

The Standard of Length is based on

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.

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

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

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.

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

Which of the following are the basic principles of forensic science? i. Principle of Exchange ii. Principle of comparison iii. Principle of Analysis

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

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-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.

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.

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* 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

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-I (CFSL) i. Bhopal ii. Delhi iii. Hyderabad iv. Kolkata List-II (Year of Establishment) a. 1957 b. 1967 c. 1968 d. 2011

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

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

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.

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.

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.

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

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

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

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

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