Forensic Physical Sciences QnA (FACT Plus 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 Plus)

Contents

Section I: Aptitude in Forensic Science

Click Here

Section II: Forensic Physical Sciences

Q.51. Which types of cable are used when installing video surveillance components?

  1. RG-6 and RG-58
  2. RG-59 and RG-58
  3. RG-59 and RG-6
  4. RG-8 and RG-59

Answer: 3. RG-59 and RG-6

Q.52. Etchant prescribed for steel surface is

  1. Gold
  2. Nitric acid
  3. Copper
  4. Iron

Answer: 1. Gold

Q.53. The function of the “color burst” is to:

  1. To synchronize the color demodulation line by line
  2. Detect the presence of a color video signal
  3. Regenerate the color sub-carrier
  4. All of these

Answer: 4. All of These

Q.54. What is PEP?

  1. Positive expanding point
  2. Positive elevating point
  3. Possible expanding point
  4. Possible elevating point

Answer: 1. Positive Expanding Point

Q.55. Ballooning effect test is a characteristic of

  1. Cotton fiber
  2. Nylon fiber
  3. Manila fiber
  4. Coir fiber

Answer: 1. Cotton Fiber

Q.56. Statement A: Whilst was more stable than mercury fulminate.

Statement B: Whilst was non-corrosive in nature.

  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: 2. Statement A is true and statement B is false

Q.57. What are the three types of cone cells?

  1. S- cells
  2. M cells
  3. L- cells
  4. N- cells

Code

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

Answer: 3. (a), (b), and (c)

Q.58. Hampi denomination is present in which Indian currency-

  1. 10
  2. 50
  3. 200
  4. 2000

Answer: 2. 50

Q.59. In atomic emission spectroscopy the emission due to the electronic transition of

  1. Singlet ground state to singlet exited state
  2. Singlet ground state to triplet exited state
  3. singlet exited state to singlet ground state
  4. Triplet exited state to singlet ground state.

Answer: 3. singlet exited state to singlet ground state

Q.60. For a particular vibrational mode to appear in the Raman spectrum, what must change

  1. Frequency of radiation
  2. Intensity of radiations
  3. Molecule’s shape
  4. Molecule polarizability

Answer: 4. Molecule Polarizability

Q.61. Which of the following statements is incorrect about the hierarchal clustering?

  1. In general, the splits and merges both are determined in a greedy manner
  2. The hierarchal type of clustering is also known as the HCA
  3. The choice of an appropriate metric can influence the shape of the cluster
  4. All of these

Answer: 4. All of these

Q.62. In the context of the Bayesian approach to the evaluation of evidence, three levels of proposition may be recognized. These are

  1. Scene, activity and offence.
  2. Source, activity and offence
  3. Source, accused and offence
  4. Source, activity and offender

Answer: 2. Source, activity and offence

Q.63. After bomb scene debris has been examined microscopically, the next step is to

  1. Examine explosive using AAS
  2. Rinse the recovered debris with acetone to separate the debris from explosive material
  3. Utilize H1-NMR to fingerprint the explosive residue
  4. Identify the detonating material with SEM-EDX

Answer: 2. Rinse the recovered debris with acetone to separate the debris from explosive material

Q.64. Which one of these statistics is unaffected by outliers?

  1. Mean
  2. Range
  3. Interquartile range
  4. Standard deviation

Answer: 3. Interquartile range

Q.65. Backscattered electron imaging is used to examine the

  1. Specimen size
  2. Topography
  3. Surface morphology
  4. Elemental state

Answer: 2. Topography

Q.66. Which of the following is correct?

  1. Prior odds x likelihood ratio = posterior odds
  2. Posterior odds x likelihood ratio = prior odds
  3. Prior odds + likelihood ratio = posterior odds
  4. Prior odds – likelihood ratio = posterior odds

Answer: 1. Prior odds x likelihood ratio = posterior odds

Q.67. What is the first step in the accident study?

  1. Accident investigation
  2. Accident reconstruction
  3. Accident data collection
  4. Accident data analysis

Answer: 3. Accident data collection

Q.68. In atomic absorption spectroscopy the most strongly absorbed light is called as

  1. Resonance line
  2. Stokes line
  3. Base line
  4. Anti-stokes line

Answer: 1. Resonance Line

Q.69. The spacing between characters in case of pica is?

  1. 255 mm per 100 characters
  2. 256 mm per 100 characters
  3. 257 mm per 100 characters
  4. 254 mm per 100 characters

Answer: 4. 254 mm per 100 characters

Q.70. Electron microscope was invented by

  1. Wilkinson in 1985
  2. Taylor in 1965
  3. Ruska in 1931
  4. Mayer in 1883

Answer: 3. Ruska in 1931

Q.71. Which of the following optical properties are used to compare the fiber:

  1. Sign of elongation
  2. Pleochroism
  3. Birefringence
  4. Isotropic refractive index

Code:

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

Answer: 4. a, b, c and d

Q.72. Auger electron spectroscopy can be used for surface chemical analysis in a way similar to which of the following?

  1. ESCA
  2. AES
  3. ICP-AES
  4. Ion spectroscopy

Answer: 1. ESCA

Q.73. Identify the most important features we look for in a CCTV DVR?

  1. Number of cameras supported, i.e. number of video inputs.
  2. Recording at how many frames per second (fps).
  3. Circuit board with software burned into its processor chip.
  4. Network connection / remote viewing capability
  5. The control circuit is found on the camera lens

Code

  1. (a), (b), and (d)
  2. Both (a) and (b)
  3. (a), (c) and (d)
  4. (a), (b), (c) and (d)

Answer: 1. (a), (b), and (d)

Q.74. Puppe’s Rule’ helps in determination of:

  1. Identity of fire arm
  2. Nature of injury caused by fire arm
  3. Range of fire arm
  4. Sequence in which shots were fired

Answer: 2. Nature of injury caused by fire arm

Q.75. Imagine a case in which police recovered 125 tablets of suspected illicit drugs. To which of the following categories does this data belong?

  1. Continuous
  2. Qualitative
  3. Nominal
  4. Discrete quantitative

Answer: 4. Discrete quantitative

Q.76. Which of the following cannot be conserved during Raman scattering?

  1. Momentum
  2. Kinetic energy
  3. Electronic energy
  4. Total energy

Answer: 2. Kinetic Energy

Q.77. ASSERTION – Changing the vocal tracts and changing its resonance frequency.

REASON – when the person produce vowel so the shape of the vocal tract produce different resonance.

Code

  1. Both are true but R is better explanation than A
  2. Both are true but R is not better explanation than A
  3. Both A and R false
  4. A false and R true

Answer: 1. Both are true but R is better explanation than A

Q.78. Who gave the procedure for the classification of Handwriting on the basis of pressure, form, speed, spacing, size and slant?

  1. Livingston
  2. Harvey
  3. Quirke
  4. T.L. Smith

Answer: 4. T.L. Smith

Q.79. Which of the following is not a Video enhancement technique?

  1. Demultiplexing
  2. Interlacing
  3. Compression
  4. Masking

Answer: 3. Compression

Q.80. Mull technique is used for the sampling of

  1. Gel
  2. Gases
  3. Liquids
  4. Solids

Answer: 4. Solids

Q.81. The NMR spectroscopy is useful for the detection of

  1. Geometrical isomers
  2. Aromaticity
  3. Hydrogen bonding
  4. All of these

Answer: 4. All of these

Q.82. The nigrosine dyes are present in?

  1. Dyestuff inks
  2. Logwood inks
  3. Iron Tannate inks
  4. Ball pen inks

Answer: 1. Dyestuff inks

Q.83. NMR spectra are observed in the _____region

  1. IR
  2. Radio frequency
  3. Microwave
  4. X-ray

Answer: 2. Radio Frequency

Q.84. Sulphocyanic acid fuming technique for the restoration of document by fuming was developed by?

  1. Albert S. Osborn
  2. Henry
  3. M.E.O. Neill
  4. Foster

Answer: 3. M.E.O. Neill

Q.85. What TAPPI stands for

  1. The Association of Police Protection Inc.
  2. Technical Association of the Pulp & Paper Industry
  3. Technical Association of Power Point Imaging
  4. The Association of Pulp & Paper Industry

Answer: 2. Technical Association of the Pulp & Paper Industry

Q.86. Which has the potential to add further compression to a file, re-wrapping or transcoding?

  1. Time conversion tool
  2. Staircasing
  3. GOP=5
  4. Transcoding

Answer: 4. Transcoding

Q.87. Which part of human ear converts sound vibrations into electrical signals

  1. Tympanic membrane
  2. Hammer
  3. Cochlea
  4. Stirrup

Answer: 3. Cochlea

Q.88. Logwood ink is extracted from which tree?

  1. Pyrus calleryana
  2. Acer negundo
  3. Acer ginnala
  4. Haematoxylon campechianum

Answer: 4. Haematoxylon campechianum

Q.89. Which one of the following is not a reason for slightly unstable condition of bullet after leaving the barrel:

  1. Nutation
  2. Momentum
  3. Yaw
  4. All of them are the reasons.

Answer: 2. Momentum

Q.90. Potassium ferrocyanide is used for the decipherment of secret writing comprising of?

  1. Copper, zinc, iron
  2. Copper, aluminum, zinc
  3. Iron, silver, copper
  4. Zinc, silver, iron

Answer: 1. Copper, Zinc, Iron

Q.91. Statement A: The critical angle for a given bullet type/target medium is velocity dependent.

Statement B: Bullets will invariably lose their gyroscopic stability and tumble after ricocheting.

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

Answer: 1. Statement B is true and statement A is false

Q.92. The particle size of toner used in printer for 600 DPI lies in the range of…………

  1. 1-3 μm
  2. 4-6 μm
  3. 2-4 μm
  4. 8-10 μm

Answer: 4. 8-10 μm

Q.93. The database designed for collection, restoration and comparison of tool images is

  1. NIST
  2. AFTE
  3. NBTRD
  4. TRAX

Answer: 4. TRAX

Q.94. The flameless ignition temperature of Pyrodex is?

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

Answer: 1. 400º C

Q.95. Photon detectors for IR are made of semiconducting material such as

  1. Lithium niobate
  2. Triglycine sulphate
  3. Indium antimonide
  4. Barium titanate

Answer: 3. Indium antimonide

Q.96. Which is considered to be the poorest type of movement in handwriting?

  1. Wrist movement
  2. Full arm movement
  3. Thumb movement
  4. Finger movement

Answer: 4. Finger Movement

Q.97. Who first used the term Nanotechnology

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

Answer: 3. Professor Norio Taniguchi

Q.98. _______ is a mineral fibre.

  1. Angora
  2. Mohair
  3. Asbestos
  4. Nylon

Answer: 3. Asbestos

Q.99. The typical trigger pull of Military rifle is

  1. 15 – 18 lbs
  2. 4 – 7 lbs
  3. 12 – 15 lbs
  4. 9 – 12 lbs

Answer: 2. 4-7 lbs

Q.100. What ratio decides the efficiency of Nano substances?

  1. Weight/Volume ratio
  2. Surface area/Volume ratio
  3. Volume/Weight ratio
  4. Pressure/Volume ratio

Answer: 2. Surface area/Volume ratio

Q.101. The reaction between Fe(II) and ferrozine is catalyzed by :

  1. Short-wave UV light
  2. Long-wave UV light
  3. Short-wave X-rays
  4. Long-wave X-rays

Answer: 1. Short-wave UV light

Q.102. What is TTI?

  1. Tangential terminal identifier
  2. Transferring terminal identifier
  3. Transmitting terminal identifier
  4. Tangential transferring identifier

Answer: 3. Transmitting terminal identifier

Q.103. Ammunition is defined under which section of IPC-

  1. Section 2-1(a) IPC
  2. Section 2-1(b) IPC
  3. Section 7(b) IPC
  4. Section 7(a) IPC

Answer: 2. Section 2-1(b) IPC

Q.104. Compton effect is

  1. In which the energy of a photon is reduced and that of an electron is increased
  2. In which the energy of an electron is reduced and that of photon is increased
  3. In which the energy of a photon and electron is decreased.
  4. In which the energy of a photon and electron is neither increased nor decreased

Answer: 1. In which the energy of a photon is reduced and that of an electron is increased

Q.105. Polarisability decreases as

  1. Both b and c
  2. Length of bond decreases
  3. Electron density decreases
  4. Electron density increases

Answer:

Q.106. The composition of Lesmok is?

  1. 75 percent black powder and 25 percent gun cotton
  2. 80 percent black powder and 20 percent gun cotton
  3. 70 percent black powder and 30 percent gun cotton
  4. 85 percent black powder and 15 percent gun cotton

Answer: 4. 85 percent black powder and 15 percent gun cotton

Q.107. Nuclear magnetic resonance which arises from

  1. None of these
  2. Transition between the nuclear spin energy level of a molecule arising from the interaction of the unsymmetrical charge distribution in nuclei with the magnetic field.
  3. Transition induces between the electro spin energy levels of a molecule in an applied magnetic field.
  4. Transition between the nuclear spin energy level of a molecule in the applied magnetic field.

Answer: 4. Transition between the nuclear spin energy level of a molecule in the applied magnetic field.

Q.108. What is the most prominent characteristic of wrist writing?

  1. Non-alignment
  2. Connecting strokes
  3. Tapering terminals
  4. Blunt terminals

Answer: 3. Tapering terminals

Q.109. What is the average of the vocal tract in a man?

  1. 17mm
  2. 30mm
  3. 10mm
  4. 25mm

Answer: 1. 17mm

Q.110. The melting point of Vicara fiber is

  1. 288-300 ˚C
  2. 265-275 ˚C
  3. 245- 260˚C
  4. 192-210 ˚C

Answer: 2. 265-275˚C

Q.111. Typewritten material can be erased using?

  1. Petroleum ether
  2. Propanol
  3. Ethanol
  4. Ethyl Acetate

Answer: 1. Petroleum ether

Q.112. Which of the following scientists who invented the digital image sensor and were awarded the Nobel Prize in 2009?

  1. Williard S. Boyle and George E. Smith
  2. Atella and Dawon kahng
  3. Nasir Ahmed
  4. David Teter

Answer: 1. Williard S. Boyle and George E. Smith

Q.113. The weaver choke reduces the recoil upto-

  1. 6-10 percent
  2. 2-3 percent
  3. 2-7 percent
  4. 8-13 percent

Answer: 4. 8-13 percent

Q.114. The effect ‘squash’ is related with which of the following printing methods?

  1. Lithography
  2. Letterpress
  3. Photogravure
  4. Gravure

Answer: 2. Letterpress

Q.115. The smallest picture element is called a:

  1. Dot
  2. None of these
  3. Pic
  4. Pixel

Answer: 4. Pixel

Q.116. Standard Consistency of the cement sample can be measured using

  1. Gauge Trowel
  2. XRD
  3. Vicat Apparatus
  4. SEM

Answer: 3. Vicat Appartaus

Q.117. HMM is a statistical method of characterizing the ______.

  1. Spectral properties of frames
  2. Classical pattern classifier
  3. None of these
  4. Random probability distribution

Answer: 1. Spectral Properties of frames

Q.118. Viscose Filters used in XRD may eliminate

  1. Kβ
  2. Kα1
  3. Kα2
  4. All of these

Answer: 1. Kβ

Q.119. Which of the following is a non-parametric test-

  1. T-test
  2. Kolmogorov-Smirnov test
  3. Pearson Coefficient of Correlation
  4. One-way ANOVA

Answer: 2. Kolmogorov-Smirnov test

Q.120. Tire marks made by a rotating or yawning vehicle are

  1. Yaw Marks
  2. Skid Marks
  3. Scrub Marks
  4. Scuff Marks

Answer: 4. Scuff Marks

Also Read

error: Content is protected !!

Discover more from Forensic's blog

Subscribe now to keep reading and get access to the full archive.

Continue reading