WorksheetsAutomotive Paint and Soil Evidence Quiz
Total questions: 55
Worksheet time: 28mins
Which layer of automotive paint provides color?
Primer
Basecoat
Clearcoat
Electrocoat
Which layer provides corrosion resistance in automotive paint?
Clearcoat
Electrocoat primer
Basecoat
Surfacer
The topmost layer in automotive paint system is:
Basecoat
Primer
Clearcoat
Electrocoat
Which instrument is widely used for elemental analysis of paint?
FTIR
SEM-EDX
GC-MS
TLC
Pyrolysis-GC is mainly used for analyzing which component of paint?
Pigment
Binder
Filler
Solvent
Which pigment is responsible for white color in paint?
Zinc oxide
Titanium dioxide
Lead chromate
Carbon black
Which of the following is NOT a component of paint?
Pigment
Binder
Catalyst
Solvent
Paint chips should be collected in:
Airtight plastic bags
Paper folds
Wet cotton
Polythene
Which technique is used to study the layer sequence of paint?
TLC
Microscopy
GC-MS
Py-GC
The database for automotive paint maintained by RCMP is called:
PDQ
CODIS
AFIS
NIBIN
Which property is useful for preliminary examination of paint?
Elemental composition
Layer sequence
Color and texture
Refractive index
Which of these is an inorganic pigment?
Alkyd resin
Titanium dioxide
Nitrocellulose
Acrylic polymer
Which solvent-based paint binder is most common?
Alkyd resin
Epoxy resin
Polyurethane
All of the above
Paint evidence is usually considered:
Class evidence
Individual evidence
Trace evidence
Both a and c
Which instrument measures absorbance in paint comparison?
Spectrophotometer
GC
XRF
SEM
Which colorant imparts red color to paint?
Ferric oxide
Lead chromate
Carbon black
Zinc oxide
Which method is NOT used for paint analysis?
FTIR
Py-GC
HPLC
PCR
Clearcoat in automotive paint mainly provides:
Corrosion resistance
Gloss and UV protection
Adhesion to metal
Pigmentation
Which component gives adhesion to paint?
Binder
Pigment
Filler
Solvent
For microscopic comparison, paint fragments are mounted in:
Distilled water
Resin
Agar gel
Ethanol
Which organization maintains the PDQ database?
FBI
INTERPOL
RCMP
NIST
What is the purpose of primer surfacer in automotive paint?
Gloss
Adhesion and leveling
Color
Corrosion resistance
Which spectroscopy method is most used for binder analysis?
IR spectroscopy
UV spectroscopy
Raman spectroscopy
X-ray fluorescence
Which of the following is an organic binder?
Epoxy resin
Calcium carbonate
Titanium dioxide
Zinc oxide
Which microscopic technique helps in determining layer sequence?
Polarized light microscopy
Electron diffraction
Scanning tunneling microscopy
Atomic force microscopy
The major mineral component of sand in soil is:
Quartz
Feldspar
Calcite
Mica
Soil texture refers to:
Color of soil
Relative proportions of sand, silt, clay
Organic content
Mineral composition only
Which instrument is commonly used for elemental analysis of soil?
XRF
GC-MS
UV-Vis
TLC
Which factor most affects soil color?
pH
Organic matter and moisture
Mineral composition only
Particle size
Which technique helps identify mineral content in soil?
XRD
FTIR
SEM
GC
Soil pH is measured using:
Spectrophotometer
pH meter
XRF
Conductivity meter
Which of the following is NOT a physical property of soil?
Color
Texture
Density
pH
Which is the most fertile soil type?
Sandy
Loamy
Clay
Silt
The density gradient method for soil analysis is based on:
Moisture
Particle size
Specific gravity
Color
Which component gives soil its dark color?
Minerals
Organic matter (humus)
Clay
Water
Which instrument helps in detecting trace pollen in soil?
SEM
Light microscope
GC-MS
XRF
Which property is most useful for forensic soil comparison?
pH only
Mineral composition
Color only
Weight only
Soil evidence is usually classified as:
Class evidence
Individual evidence
Biological evidence
Both a and b
Which soil particle is the smallest?
Sand
Clay
Silt
Gravel
Which analysis technique gives elemental composition of soil?
XRF
FTIR
UV
GC
Soil density gradient analysis uses:
Organic solvents
Glass tubes with varying densities
TLC plates
Microscopy slides
Which property differentiates soils from two locations most reliably?
pH
Color
Mineral content and particle size
Moisture
The most common forensic use of soil is in:
Gunshot residue analysis
Linking suspect to crime scene
Identifying time of death
Fiber transfer
Which test helps determine soil organic content?
Loss on ignition
XRF
FTIR
GC
Which mineral gives reddish color to soil?
Ferric oxide
Quartz
Calcite
Gypsum
Which property of soil is least reliable for comparison?
Color
Mineral composition
Texture
Layer sequence
The first step in soil examination is:
XRF analysis
Visual inspection
Density gradient analysis
Particle size analysis
Soil sample collection from shoes should be done by:
Washing with water
Scraping carefully and storing in paper folds
Sealing shoes in plastic
Using solvents
Which of these is NOT a factor in soil formation?
Parent rock
Climate
Human
Organisms
Which property of soil is measured using sieve test?
pH
Particle size distribution
Moisture
Mineral composition
What is the primary purpose of a clearcoat in automotive paint?
To provide color
To act as a primer
To enhance gloss and protect the basecoat
To improve adhesion
Which type of paint evidence is most likely to be unique to a specific manufacturer?
Class evidence
Individual evidence
Trace evidence
None of the above
Which method is commonly used to determine the moisture content in soil?
Microscopic method
Volumetric method
Colorimetric method
Gravimetric method
What is the primary purpose of a soil auger?
To determine soil density
To analyze soil moisture
To collect soil samples
To measure soil pH
Which method is commonly used to analyze the chemical (volatile components) composition of paint?
HPLC
FTIR
UV-Vis
GC-MS
