a) Sagittal
b) Lambdoid
c) Coronal
d) Mid-frontal
Answer-D
Explanation
Ø Coronal suture- about 30-40 yrs
Ø Sagittal suture- about 20-25 yrs
Ø Lambdoid suture- about 25-30 yrs
2. When in a proceeding, the court has to form an opinion on any matter relating to any information transmitted or stored in any computer, which of the following sections of Indian Evidence Act is relevant :
a) Section 45
b) Section 45A
c) Section 46
d) Section 47A
Answer-B
Explanation
3. Chain of custody means:
a) Continuity of possession
b) Custody of accused
c) Sampling process
d) Presenting matter to the court
Answer-A
Explanation
4. The first Forensic Science Laboratory was started in the state of Maharashtra in the year
a) 1958
b) 1966
c) 1981
d) 1989
Answer-A
Explanation
Ø Forensic Science Laboratory, Mumbai was first established in 1958 at Sir J.J. Group of Hospitals with a handful of experts and staff.
Ø Today, Maharashtra FSL has emerged into a full-size 'Directorate' having its headquarters at Santacruz, Kalina, Mumbai.
Ø It also has seven Regional Forensic Science Laboratories (RFSLs) at Nagpur (1966), Pune (1979), Aurangabad (1981), Nashik (2004), Amaravati (2008), Nanded (2015) and Kolhapur (2016) and five Mini Forensic Science Laboratories at Chandrapur (2019), Dhule (2019), Ratnagiri (2019), Thane (2019) and Solapur (2020).
5. During summer season, a corpse was found lying in open with pupae of housefly on the body. This indicates the time since death would be approximately:
a) 1 day
b) 5 days
c) 10 days
d) 8 days
Answer-B
Explanation
Lifecycle of Housefly (Musca domestica)
Ø The house fly develops in four stages: egg, larva, pupal, and adult.
Ø Adult females lay eggs singly but in small piles in a nutrient-rich, moist location. They can lay as many as 500 eggs over a three to four day period, and several flies will deposit eggs in close proximity.
Ø Legless larvae, also called maggots, emerge within eight to 20 hours.
Ø Upon emerging, the white maggots, about 3 to 9 mm long, feed immediately on the material in which the eggs were laid. Larvae go through three instars or development stages before becoming full-grown maggots.
Ø Maggots find a cool, dry place to pupate.
Ø A pupal case is formed, and it changes in color from yellow to black as it ages. In two to six days, pupae develop and emerge as adults.
Ø Adults live 15 to 25 days, and in some cases, up to two months.
Ø The optimum time for development is the summer, and the life cycle is complete in seven to 10 days.
ØAnnually, 10 to 12 generations may occur.
6. Assertion
: Wheel method of searching evidence is not suitable for larger area.
Reason : Investigator starts from a critical point and revolves into a circular fashion.
(A) Both Assertion and Reason are true
(B)
Assertion is true but Reason is false
(C)
Assertion is false but Reason is true
(D) Both
Assertion and Reason are false
Answer-C
7. Rate of charring of wood depends on all, except:
a) Intensity of fire
b) Duration of exposure
c) Moisture content
d) Demarcation line
Answer-D
8. The method of Stass was modified by Otto for the removal of which of the following?
a) Bone
b) Fat
c) Tissue
d) Water
Answer-B
9. Footwear impression in snow is:
a) Three-dimensional impression
b) Positive two-dimensional impression
c) A flat impression
d) A negative two-dimensional impression
Answer-A
10. Which of
the following sketching methods is the most suitable for large outdoor crime
scene?
(A)
Triangulation
(B)
Photogrammetry
(C) Baseline
(D) Polar
coordinate
Answer-D
Explanation
Coordinate
method: The
coordinate method uses the practice of measuring an object from two fixed
points of reference. One such procedure is the baseline technique, in which a
line is drawn between two known points. The baseline could also be a wall or a
mathematically derived point along a designated area where exact measurements
can be determined. The measurements of a particular item are then taken from
left.
Rectangular
Coordinate method:
more accurate version of baseline technique. It uses 2 such baselines.
Triangulation
method: The
triangulation method is a bird’s-eye view of the scene that uses fixed objects
from which to measure. This is particularly useful for sketching outdoor crime
scenes where there are no easily identifiable points of reference. In this
procedure, two or more widely separated points of reference are required. The
item of interest is then located by measuring along a straight line from the
reference points.
Cross-projection
method: The
cross-projection method is used in indoor crime scenes. It is basically a
top-down view of the crime scene, with the walls of the room “folded down” to
reveal location of bullet holes, blood-splatter evidence. Measurements are then
made from a designated point on the floor to the area on the wall in the
question.
Polar/Grid
Coordinate: This
is a two-dimensional system that indicates the location of an object by
providing the angle and distance from the fixed or known point. Obviously, in
order to conduct measurements by this method a transit or compass is necessary
to measure the angles and polar directions. This method is best utilized in
large outdoor scenes with very few landmarks.
Photogrammetry is the science and technology of
obtaining reliable information about physical objects and the environment
through the process of recording, measuring and interpreting photographic
images and patterns of electromagnetic radiant imagery and other phenomena. The
term photogrammetry was coined by the Prussian architect Albrecht Meydenbauer.
11. Which of the following is not an early change observed in eye after death?
a) Segmentation of retinal blood columns
b) Increase in intraocular pressure
c) Loss of corneal reflex
d) Increase in potassium concentration in vitreous humor
Answer-B
12. The value of induced dipole moment divided by strength of the field is better known as:
a) Polarizability
b) Total dipole moment
c) Unit dipole moment
d) Depolarization
Answer-A
Explanation
Ø Induced dipole moment is the dipole(2 poles) moment which has occurred due to induction of charge by the action of the other molecule.
Ø Polarizability is the ratio of induced dipole moment, and the field which is applied to it.
13. The formulae given by which of the following can be helpful in estimation of age of unknown human skeletal remains?
a) Trotter and Gleser
b) Gustafsons’s
c) Dupertius and Hadden
d) Pearson’s
Answer-B
14. Which of the following compounds is infra-red inactive ?
a) Ethylene
b) Hydrochloric acid
c) Carbon monoxide
d) Nitric acid
Answer-A
15. Pre-column used for the conditioning of mobile phase is known as:
a) Guard column
b) Scavenger column
c) Conditioning column
d) Mobilizing column
Answer-B
Explanation
Scavenger chemical substance added to a mixture in order to remove or de-activate impurities and unwanted reaction products, for example oxygen, to make sure that they will not cause any un-favorable reactions.
16. Time-of-flight mass spectrometry operates in:
(A) Continuous mode
(B) Pulse mode
(C) Direct mode
(D)
Syntactic mode
Answer-D
17. Which of the following is the correct sequence of the components of a mono-chromator in Emission Spectrometry ?
a. Entrance slit, focusing lens, collimating lens, prism, exit slit
b. Entrance slit, collimating lens, prism, focusing lens, exit slit
c. Exit slit, prism, collimating lens, focusing lens, entrance slit
d. Entrance slit, prism, collimating lens, focusing lens, exit slit
Answer-B
18. Distortion of glass article on fire suggests that the temperature reached :
a) Below 750ºC
b) 750ºC to 850ºC
c) 1000ºC to 1500ºC
d) 1500ºC to 2000ºC
Answer-B
19. A man committed suicide by a 0.357 revolver in hard contact of his head. Blood stains were found in the barrel of the revolver due to :
a) Back spatter
b) Forward spatter
c) Blowback effect
d) Impact effect
Answer-C
20. In HPLC, LOD and LOQ are obtained using :
a) Retention time to Signal ratio
b) Efficiency to Asymmetry ratio
c) Signal to Noise ratio
d) Retention time to Dead time ratio
Answer-C
Explanation
Ø LOD corresponds to the analyte amount for which the signal-to-noise ratio is equal to 3.
Ø LOQ corresponds to the analyte amount for which the signal-to-noise ratio is equal to 10.
21. Which of the following is used as a source of radiation in XRE Spectrometer ?
a) Collidge Tube
b) Crookes Tube
c) Hollow Cathode Tube
d) Incandescent light bulb
Answer-A
Explanation
Ø X-ray Emission Spectroscopy (XES) is an element-specific method to probe the partially occupied electronic structure of materials and was originally developed in the optical wavelength range by Henry Rowland in 1882 by using spherical concave gratings for focusing of light.
Ø It is a form of X-ray spectroscopy in which the X-ray line spectra are measured with a spectral resolution sufficient to analyze the impact of the chemical environment on the X-ray line energy and on branching ratios.
22. Analysis of a drug by UHPLC generates a pressure of 14000 psi. A column with which of the following particle size is most suitable for analysis :
a) 10 µm
b) 2 µm
c) 5 µm
d) 20 µm
Answer-B
23. Which of the following states has not a separate high court ?
a) Sikkim
b) Manipur
c) Meghalaya
d) Mizoram
Answer-D
24. ....................... is used to generate X-ray.
a) Anger tube
b) West tube
c) Mayer tube
d) Coolidge tube
Answer-D
25. HPFS and exFAT are examples of which of the following operating systems ?
a) Windows XP
b) Linux
c) Mac OSX
d) Windows 98
Answer-C
Explanation
Ø exFAT (Extensible File Allocation Table) is a file system introduced by Microsoft in 2006 and optimized for flash memory such as USB flash drives and SD cards. exFAT was proprietary until 28 August 2019, when Microsoft published its specification. Microsoft owns patents on several elements of its design.
Ø HPFS (High Performance File System) is a file system created specifically for the OS/2 operating system to improve upon the limitations of the FAT file system. It was written by Gordon Letwin and others at Microsoft and added to OS/2 version 1.2, at that time still a joint undertaking of Microsoft and IBM, and released in 1988.
26. Tenax TA is a porous polymer resin based on......................... is specifically designed for trapping of true volatile or semivolatile compound from air.
a) Asahipak NH2P-504E
b) 2,4 Dinitrophenyl hydrazine
c) 2, 4, 6-tribromoaniline
d) 2, 6-diphenylene oxide
Answer-D
27. Bertillon system of personal identification developed in the late 19th century in France was primarily based on :
a) Fingerprints
b) Anthropometry
c) Retina pattern
d) Facial features
Answer-B
28.
Assertion : Rapid hardening cement is prefabricated concrete construction and
road works.
Reason : With the same water, cement ratio at a fixed day of application strength of rapid hardening cement is more than ordinary portland cement.
a) Both Assertion and Reason are correct
b) Assertion is correct but Reason is false
c) Assertion is false but Reason is correct
d) Both Assertion and Reason are false
Answer-A
29. In adults, the transparency of roots of teeth:
a) Decreases with increase in age
b) Increases with increase in age
c) Remains constant throughout life
d) First increases and then decreases with age increase
Answer-B
30. Woods metal, which is used to make cast of tool marks is composed of :
a) Bismuth, lead, tin, cadmium
b) Bismuth, copper, cadmium, lead
c) Bismuth, zinc, cadmium, tin
d) Bismuth, copper, zinc, cadmium
Answer-A
Explanation
Ø Wood's metal, also known as Lipowitz's alloy, is a metal alloy that is useful for soldering and making custom metal parts, but which is toxic to touch or breathe vapors from.
Ø It is eutectic (minimum-melting composition of 2 or more components), fusible alloy with a melting point of approximately 70 °C (158 °F).
Ø It is a eutectic alloy of 50% bismuth, 26.7% lead, 13.3% tin, and 10% cadmium by mass.
Ø The alloy is named for Barnabas Wood.
31. The fast-drying coatings that dry by evaporation of the solvent rather than by oxidation or polymerization is better known as :
a) Varnish
b) Vehicle
c) Lacquer
d) Resins
Answer-C
32. When the temperature of liquid is raised, its refractive index :
a) Increases
b) Decreases
c) Remains unchanged
d) First increases then decreases
Answer-B
33. A footwear impression left on a hard flat dusty surface by the clean outsole of a shoe is a :
a) Three-dimensional footwear impression
b) Positive two-dimensional footwear impression
c) Negative two-dimensional footwear impression
d) Positive three-dimensional footwear impression
Answer-C
Explanation
Negative
impression − An
impression that results when the contact area of a shoe or tire removes residue
(such as dust, paint or some spilled substance) from a surface, leaving behind
a “clean” image of the print in the residue.
Positive
impression − An
impression that results when a shoe or tire deposits material onto a surface.
34. Which of the following marks are produced during the dynamic process ?
a) Compression marks
b) Striations marks
c) Indentation marks
d) Imprints
Answer-B
Explanation
Ø A dynamic process is one that constantly changes and progresses.
35. Tool marks does not consist of :
a) Indents
b) Striations
c) Elemental composition
d) Drill
Answer-C
36. Paint analysis does not include :
a) Sequence of layers
b) Minerological profile
c) Pyrolysis gas chromatography
d) Trace elemental composition
Answer-B
37. The MRM is a technique in mass spectrometer stands for :
a) Multiple reaction monitoring
b) Multiple range monitoring
c) Multiple ratio monitoring
d) Magnetic resonance monitoring
Answer-A
Explanation
Ø Multiple reaction monitoring, also known as Selective Reaction Monitoring – SRM)
Ø Highly specific and sensitive mass spectrometry technique that can selectively quantify compounds within complex mixtures.
Ø This technique uses a triple quadruple MS that firstly targets the ion corresponding to the compound of interest with subsequent fragmentation of that target ion to produce a range of daughter ions.
Ø One (or more) of these fragment daughter ions can be selected for quantitation purposes.
Ø Only compounds that meet both these criteria, i.e. specific parent ion and specific daughter ions corresponding to the mass of the molecule of interest are isolated within the mass spectrometer.
Ø MRM is performed for selection of specific analytes and absolute quantitation of proteins, peptides, metabolites and lipids from plasma, serum and other biological samples.
38. Miscope is a/an :
a) Small hand held digital microscope
b) IR microscope
c) Microphotograph
d) Spectroscopic instrument
Answer-A
39. Which of
the following are correct parameters which influence the nature of tool marks ?
I. Horizontal angle of tool
II. Vertical angle of tool
III.
Pressure on tool
IV. Side of
the tool blade
Choose the correct answer:-
a) I & II are correct
b) I & III are correct
c) I, II and III are correct
d) I, III & IV are correct
Answer-C
40. Which of the following liquids is used to separate the soil grain on the basis of specific gravity?
a) Ethanol
b) Sodium hydroxide solution
c) Bromoform
d) Nitrobenzene
Answer-C
41. The terminology used to describe when the sperms are present in large number with abnormal morphology is :
a) Aspermia
b) Oligospermia
c) Teratozoospermia
d) Necrozoospermia
Answer-C
Explanation
Aspermia:- commonly known as 'dry ejaculate' and refers to a complete lack of semen expulsion.
Oligospermia:- a low sperm count.
Teratozoospermia:- increase in the concentration of
abnormal sperms in semen.
Necrozoospermia:- also k/a necrospermia. It is the
condition when the sperm is dead (or necrotic) in a fresh semen sample.
Necrozoospermia can be classified as moderate (50% to 80% necrotic sperm) or
severe (80% or more of sperm are necrotic).
42. Chronic poisoning due to lead is known as :
a) Plumbism
b) Hydrargyrism
c) Ptyalism
d) Arsenicosis
Answer-A
Explanation
Arsenicosis:- is a chronic illness resulting from
drinking water with high levels of arsenic over a long period of time (such as
from 5 to 20 years). It is also known as arsenic poisoning.
Ptyalism:- is a condition that causes the
overproduction of saliva.
Hydrargyrism:- called poisoning of hydrargyrum,
or mercury. Also called mercurialism.
43. The luminol test is a capable of detecting bloodstains diluted upto :
a) 30,000 times
b) 3,00,000 times
c) 3,000 times
d) 300 times
Answer-B
44. The largest protein molecule in blood is :
a) Albumin
b) Globulin
c) Fibrinogen
d) Haemoglobin
Answer-D
45. Which of the following ASTM guidelines is not related to forensic document examination ?
a) ASTM E 1422
b) ASTM E 2290-07a
c) ASTM F 2503-13
d) ASTM E 443-09
Answer-C
46. Which of the following is not used for nuclear DNA profiling ?
a) Cut hair
b) Plucked hair
c) Fallen hair
d) Kinky hair
Answer-A
47. As ‘Wool’ is obtained from sheep hair likewise Mohair is obtained from :
a) Camel hair
b) Vicuna hair
c) Angora goat hair
d) Asiatic goat hair
Answer-C
Explanation
Ø Mohair is a long, smooth fiber used in sweaters, hats, and other fluffy accessories.
Ø Angora wool is an entirely different material from mohair.
Ø Angora wool is violently obtained from rabbits.
48. Which of the following is the test for detection of urine ?
a) Kastle Mayer test
b) Jaffe’s test
c) Teichmann test
d) Phadebas test
Answer-B
Explanation
Ø Creatinine in serum or urine is determined by Jaffe's reaction where creatinine produces quantitatively an orange color with picric acid in alkaline medium.
Ø After allowing an incubation time of 15 min at room temperature for colour development the colour is measured at 520 nm.
49. The STRs with identical length and sequence are known as :
a) Simple repeats
b) Complex repeats
c) Compound repeats
d) Complex hyper-variable repeats
Answer-A
50. As per ISO/IEC 7811, a magstripe card contains:
a) One track
b) Two tracks
c) Three tracks
d) Four tracks
Answer-C
Explanation
ISO/IEC 7811
Identification cards — Recording technique is a set of nine (7811-1 to 7811-9)
standards describing the recording technique on identification cards. It
comprises:
"Part
1": Embossing
"Part
2": Magnetic stripe — Low coercivity
"Part
3": Location of embossed characters on ID-1 cards Part 3 is already
withdrawn and revised by Part 1.
"Part
4": Location of read-only magnetic tracks — Tracks 1 and 2 Part 4 is
already withdrawn and revised by Part 2.
"Part
5": Location of read-write magnetic track — Track 3 Part 5 is already
withdrawn and revised by Part 2.
"Part
6": Magnetic stripe — High coercivity
"Part
7": Magnetic stripe — High coercivity, high density Allows capacity 10
times that of a card conforming to Part 6.
"Part
8": Magnetic stripe -- Coercivity of 51,7 kA/m (650 Oe) (including any
protective overlay)
"Part
9": Tactile identifier mark
Specifies
the physical characteristics of a tactile identifier mark used by visually
impaired card holders to distinguish their cards.
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