Forensic Physical Sciences QnA (FACT 2022)

FACT and FACT Plus Exam 20 March 2022

Exam NameFACT and FACT Plus Exam 20 March 2022
Test Date20/03/2022
Test Time :9:00 AM – 11:00 AM
SubjectForensic Physical Sciences (FACT)


Section I: Aptitude in Forensic Science

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Section II: Forensic Physical Sciences

Q.51. Refractive Index of the Diamond is

  1. 2.9
  2. 2.52
  3. 2.41
  4. 2.12

Answer: 3. 2.41

Q.52. Fine carbonaceous material in the discharge residues are known as :

  1. Gunshot Residue
  2. Bullet wipe mark
  3. Scorches
  4. Blackening

Answer: 4. Blackening

Q.53. Which one of the following variables is not categorical?

  1. Marital status of a person (single, married, divorced, other)
  2. Choice on a test item: true or false
  3. Gender of a person: male or female
  4. Age of a person

Answer: 4. Age of a Person

Q.54. Method of removing Serial number from stolen weapon by hammering of the surface with a round punch to completely hide the number. :

  1. Over stamping
  2. Grinding
  3. Peening
  4. Centre punching

Answer: 3. Peening

Q.55. Computers can be involved in which of the following types of crime?

  1. Homicide and sexual assault
  2. Computer intrusions and intellectual property theft
  3. Civil disputes
  4. Phishing

Choose right answer from one of the following:

  1. a, c and d
  2. both a and b
  3. a, b, c and d
  4. a, b, and d

Answer: 3. a, b, c and d

Q.56. Which of the following is a principle component of dynamite-

  1. TNT
  2. RDX
  3. Nitro-glycerine
  4. Black powder

Answer: 3. Nitro-Glycerine

Q.57. Tiny dots combine to form a digital image called?

  1. Electrolyte
  2. Cell
  3. Resolution
  4. Pixel

Answer: 4. Pixel

Q.58. Smokeless gun powder is

  1. Nitrocellulose, Sulphur, and Charcoal
  2. Potassium nitrate, Sulphur & Nitroglycerine
  3. Nitrocellulose & Nitroglycerine
  4. Potassium nitrate, Sulphur, and Charcoal

Answer: 3. Nitrocellulose & Nitroglycerine

Q.59. Which type of identification marks on metal surface cannot be restored after obliteration?

  1. Punched marks
  2. Engraved marks
  3. Over
  4. Cast marks

Answer: 4. Cast Mark

Q.60. Statement A: Sectional Density of bullet decreases with decrease in Diameter of bullet

Statement B: Sectional Density of bullet increases with Increase in Weight of bullet

  1. Both are true.
  2. Statement A is true and statement B is false.
  3. Both are false.
  4. Statement B is true and statement A is false.

Answer: 4. Statement B is true and statement A is false.

Q.61. Resistance is a variable that relates flow and pressure accordance of important law called?

  1. Baye’s theorem
  2. Lombard effect
  3. Fundamental law
  4. Ohm’s law

Answer: 4. Ohm’s Law

Q.62. The “fingerprint” IR spectrum can be seen using:

  1. Polarizing microscope
  2. Scanning electron microscope
  3. Stereoscopic microscope
  4. Micro-spectrophotometer

Answer: 4. Micro-spectrophotometer

Q.63. The acidification in Indian ink is majorly due to the addition of which component?

  1. Hydrochloric Acid
  2. Iodine
  3. Silver Nitrate
  4. Ammonia

Answer: 4. Ammonia

Q.64. Which of the following procedure of accident data collection involves obtaining information such as measurement of skid marks?

  1. Cause Analysis
  2. Technical Preparation
  3. At Scene-Investigation
  4. Reporting

Answer: 3. At Scene-Investigation

Q.65. NTSC stands for

  1. National Television Standards Committee
  2. Natural television service circuit
  3. Nation telemarketing standard commission
  4. National Television Standards circuit

Answer: 1. National Television Standards Committee

Q.66. For the following four molecules: acetone, benzene, dimethyl ether, ethane (each of which contains only one type of proton) the correct order of chemical shift (in δ units) is which of the following?

  1. Benzene < acetone < dimethyl ether < ethane
  2. Benzene > dimethyl ether > acetone > ethane
  3. Benzene < ethane < acetone < dimethyl ether
  4. Benzene > ethane > acetone > dimethyl ether

Answer: 2. Benzene > dimethyl ether > acetone > ethane

Q.67. The maximum displacement or distance moved by a point on a vibrating body/wave measured from its equilibrium portion. It is equal to one half the length of vibration called?

  1. Amplitude
  2. Resonance
  3. Frequency
  4. Ideolectal

Answer: 1. Amplitude

Q.68. Statement A: It is impossible to match bullets from polygonal rifle barrels.

Statement B: With fully automatic weapons and self-loading pistols, rifles and shotguns, the empty cartridge case is manually ejected from the weapon after firing.

  1. Both are false.
  2. Statement A is true and statement B is false.
  3. Statement B is true and statement A is false.
  4. Both are true.

Answer: 1. Both are False

Q.69. Who patented the needle gun and in which year?

  1. Joshua, 1840
  2. Frosythe, 1807
  3. Dreyse, 1828
  4. Alexander, 1740

Answer: 3. Dreyse, 1828

Q.70. Incendiary bullet contains:

  1. Sulphur
  2. Wax
  3. Phosphorus
  4. All of these

Answer: 3. Phosphorus

Q.71. Variation of ________ in tool angle may cause a significant influence on the matching of the questioned and standard tool mark of the same tool.

  1. above 20°
  2. 20°
  3. 10°

Answer: 3. 100

Q.72. In _____ the color of every pixel is different when compressed.

  1. BMP
  2. GIF
  3. JPEG
  4. JPG

Answer: 2. GIF

Q.73. Which of the following is also known as ADAM’S APPLE?

  1. Arytenoid cartilage
  2. Thyroid cartilage
  3. Epiglottis
  4. Corniculate cartilage

Answer: 2. Thyroid Cartilage

Q.74. Assertion (A): The range of fire can be determined by the spread of pellets.

Reason (R): Because shot gun cartridges are loaded with multiple pellets.

  1. Both A and R are true
  2. Both A and R are false
  3. A is false but R is true
  4. A is true but R is false

Answer: 4. A is true but R is false

Q.75. Which of the following section of the Indian evidence Act 1872 describes electronic evidence?

  1. Section 65B
  2. Section 65C
  3. Section 65A
  4. Section 65D

Answer: 1. Section 65B

Q.76. The flameless ignition temperature of Pyrodex is?

  1. 300º C
  2. 200º C
  3. 500º C
  4. 400º C

Answer: 4. 400º C

Q.77. Pistols have a firing range around-

  1. 45-50 yards
  2. 90-100 yards
  3. 15-25 yards
  4. 30-50 yards

Answer: 1. 45-50 yards

Q.78. The Raman Spectrum is said to consist of strokes lines when

  1. Δv<0
  2. Δv>0
  3. Δv=0
  4. Does not depend on Δv

Answer: 2. Δv>0

Q.79. Carboxylic acids have ore chemical shift than alcohols due to

  1. Decreased H-bonding
  2. Decreased electronegativity
  3. Increased delocalization
  4. Increased de-shielding

Answer: 4. Increased de-shielding

Q.80. Ascending order of a data hierarchy

  1. Byte – Bit – File – Fields – Data base – Record
  2. Bit- Byte- Field-Record- File- Data base
  3. Bit- Byte- Field- File – Record – Data base
  4. Byte – Bit – Fields-Record- File- Data base

Answer: 2. Bit- Byte- Field-Record- File- Data base

Q.81. Fry’s reagent comprises of

  1. Cupric chloride
  2. Hydrochloric acid
  3. Nitric acid
  4. Silver nitrate

Choose right answer from one of the following:

  1. b, c and d
  2. a and b
  3. a and c
  4. a and d

Answer: 2. a and b

Q.82. Elaborate GEQD.

  1. Government Examiner of Questioned Documents
  2. Government Evaluator of Questioned Documents
  3. Genuine Evaluation of Questioned Documents
  4. Genuine Examination of Questioned Documents

Answer: 1. Government Examiner of Questioned Documents

Q.83. The annealing temperature for glass is

  1. 100- 150˚C
  2. 900- 1000˚C
  3. 700- 950˚C
  4. 500- 650˚C

Answer: 4. 500- 650˚C

Q.84. .315” CAL is equivalent to

  1. 6 mm
  2. 5 mm
  3. 9 mm
  4. 8 mm

Answer: 4. 8mm

Q.85. Polarising microscope can be used to study the

  1. Birefringence
  2. Refractive indexes
  3. Retardation order
  4. All of them

Answer: 4. All of Them

Q.86. What is the name of the device that allows four surveillance camera images to be viewed on a monitor at the same time?

  1. A modulator
  2. A video splitter
  3. A quad switcher
  4. A photoelectric sensor

Answer: 3. A quad switcher

Q.87. The term ‘Expert evidence’ is defined in section

  1. 45, Indian Evidence Act
  2. 131, Indian Evidence Act
  3. 45, Criminal Procedure code
  4. 131, Criminal Procedure code

Answer: 1. 45, Indian Evidence Act

Q.88. The elemental composition of paper can be determined using which techniques?

  1. SEM-EDS
  2. NMR
  3. UV spectroscopy
  4. IR spectroscopy

Answer: 1. SEM-EDS

Q.89. The material used to construct the diffracting crystal is

  1. Tungsten
  2. Molybdenum
  3. Sodium Chloride
  4. Cobalt

Answer: 3. Sodium Chloride

Q.90. Deflection in CRTs used in TV receivers is done:

  1. Electrostatically for both vertical and horizontal
  2. Electrostatically for vertical and magnetically for horizontal
  3. Magnetically for both vertical and horizontal
  4. Magnetically for vertical and Electrostatically for horizontal

Answer: 3. Magnetically for both vertical and horizontal

Q.91. Time signal can be converted into frequency signal by using

  1. Fourier Transformation
  2. Laplace Transformation
  3. Differential equations
  4. Differentiation

Answer: 1. Fourier Transformation

Q.92. Which of the following acid is widely used as chemical erasure?

  1. Carbolic acid
  2. Sulphuric acid
  3. Oxalic acid
  4. Hydrochloric acid

Answer: 3. Oxalic Acid

Q.93. What is viewed as problem of probabilistic inference?

  1. Speaking
  2. Speech recognition
  3. Utterance
  4. Hearing

Answer: 2. Speech Recognition

Q.94. Making of a false document comes under which section of IPC?

  1. 466
  2. 467
  3. 463
  4. 464

Answer: 4. 464

Q.95. The source of sound energy for speech production is

  1. Larynx
  2. Vocal cord
  3. Nasal cavity
  4. Pharynx

Answer: 2. Vocal Cord

Q.96. Which of the following is an Auger transition starting from a hole in 1s levels which would be filled up from the 2p level?

  1. KLL transition
  2. LLM transition
  3. KLM transition
  4. LMN transition

Answer:  1. KLL Transition

Q.97. Which of the following signal is used in speech recognition?

  1. Acoustic signal
  2. Electromagnetic signal
  3. Electric signal
  4. Frequency signal

Answer: 1. Acoustic signal

Q.98. Pitch of human male speech sound ranges between

  1. 100- 120 Hz
  2. 200- 230 Hz
  3. 120-190 Hz
  4. 60- 150 Hz

Answer: 1. 100-120 Hz

Q.99. Kromekote paper method is used in the following:

  1. Detecting explosive residue
  2. Deciphering erased writing
  3. Detecting GSR
  4. Deciphering sequence of intersecting strokes

Answer: 4. Deciphering sequence of intersecting strokes

Q.100. The most commonly used laser for Raman spectroscopy is

  1. Ruby Laser
  2. He-Ne laser
  3. He-Hg
  4. Semi-conductor laser

Answer: 2. He-Ne laser

Q.101. Fractures due to heat are

  1. Concentric
  2. Wavy
  3. Radial
  4. Spiral

Answer: 2. Wavy

Q.102. Which of the following section of the Indian Evidence Act 1872 describes tape-recorded conversation/ dialogue?

  1. Section 10
  2. Section 7
  3. Section 9
  4. Section 8

Answer: 4. Section 8

Q.103. “There is plenty of room at the bottom”, this was stated by

  1. Professor Norio Taniguchi
  2. Richard Feynman
  3. Sumio Lizima
  4. Eric Drexler

Answer: 1. Professor Norio Taniguchi

Q.104. The physical examination of paint included

  1. None of them
  2. Color
  3. Elemental structure
  4. Composition

Answer: 2. Color

Q.105. NCIC stands for:

  1. National Crime Information Center
  2. National Center for Information Control
  3. National Criminal Information Control
  4. None of these

Answer: 1. National Crime Information Center

Q.106. Type written documents comprises of which type of ink?

  1. Oil-based ink
  2. Water based ink
  3. Aqueous ink
  4. Dye based ink

Answer: 1. Oil-based ink

Q.107. A computer database containing images of bullets and cartridge cases recovered from scenes or test fired from seized firearms is known by the acronym:

  1. NIBIN
  2. IAFIS
  3. GRC

Answer: 1. NIBIN

Q.108. Which of the following is not a term that is used to indicate the shape of a bullet?

  1. Round nose
  2. Wadcutter
  3. Cannelure
  4. Spitzer

Answer: 3. Cannelure

Q.109. Which of the following parts of the vocal tract is important in voice identification?

  1. Articulator
  2. Larynx
  3. Pharynx
  4. Respiratory system

Answer: 1. Articulator

Q.110. During Combustion of Gun Powder, the rate of reaction is __________ proportional to pressure.

  1. Quadratic
  2. Linear
  3. None of these
  4. Exponential

Answer: 4. Exponential

Q.111. Where is larynx located?

  1. Posterior to nasal and oral cavity
  2. Posterior to esophagus
  3. Superior to pharynx
  4. Midline of neck

Answer: 4. Midline of neck

Q.112. Snap haunt is a following weapon

  1. Flint lock muzzle loader
  2. Percussion Lock
  3. Wheel lock
  4. Match loch

Answer: 2. Percussion Lock

Q.113. Which characteristic is this? “We can distinguish between sound having same pitch and loudness.”

  1. Pitch
  2. Tone
  3. Timber
  4. Note

Answer: 3. Timber

Q.114. The process of documenting the seizure of CCTV Footage evidence and, in particular, when that evidence changes hands, is known as:

  1. None of these
  2. Field notes
  3. Chain of custody
  4. Interim report

Answer: 3. Chain Of Custody

Q.115. Minimum color depth of video files are ______.

  1. 16 bit
  2. 256 colors
  3. 16 bit (true)
  4. 16 color

Answer: 2. 256 Colors

Q.116. The diameter of percussion cap for small caliber rifles is:

  1. 1mm
  2. 4.3 mm
  3. 10mm
  4. 2mm

Answer: 2. 4.3 mm

Q.117. Simpson’s Paradox occurs when

  1. No baseline risk is given, so it is not known whether or not a high relative risk has practical importance
  2. The results of a test are statistically significant but are really due to chance.
  3. The direction of the relationship between two variables changes when the categories of a confounding variable are taken into account
  4. A confounding variable rather than the explanatory variable is responsible for a change in the response variable

Answer: 3. The direction of the relationship between two variables changes when the categories of a confounding variable are taken into account

Q.118. Copper is a major component in which type of ink-

  1. Dyestuff ink
  2. Iron gallotinate ink
  3. Carbon ink
  4. Log wood ink

Answer: 4. Log wood ink

Q.119. What should a CCTV operator do first if they observe a crime in progress?

  1. Switch to real time recording, note the time and inform the police of the incident
  2. Put camera in time lapse mode and request assistance from a colleague
  3. Contact the local police to report the incident and await further instructions
  4. Open an incident log and note all relevant details before starting recording

Answer: 1. Switch to real time recording, note the time and inform the police of the incident

Q.120. Raman spectroscopy is generally carried out in which region

  1. Visible
  2. IR
  3. Radio-wave
  4. Ultra-violet

Answer:  1. Visible

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