Trace Evidence Analysis Quiz Crafted By-
Akhil B. Parippallil
Introduction to Trace Evidence Analysis
The field of forensic science draws from a number of scientific branches, including physics, chemistry, and biology, with its focus being on the recognition, identification, and evaluation of physical evidence. It has become an essential part of the judicial system, as it utilizes a broad spectrum of sciences to achieve information relevant to criminal and legal evidence.
Let's look at the questions and their answers.
Ques 1. Anisotropic materials have
a) Hardness
b) Refractive Index
c) Density
d) Thickness
Answer-a) Hardness
Ques 2. Microscopic examination of paint chips from a car may include
a) Sequence of paint layers
b) Colour of the paint
c) Elemental profile of paint
d) Both a and b
Answer- d) All of the above
Ques 3. Fracture pattern in a glass sheet due to excessive heat will be
a) Regular
b) Irregular
c) Both regular and irregular
d) None of the above
Answer- b) Irregular
Ques 4. _____ is a regenerated fiber.
a) Cotton
b) Rayon
c) Nylon
d) Silk
Answer-b) Rayon
Ques 5. Pyrolysis gas chromatography is useful technique for characterization of the following paint constituents:
a) Pigment
b) Binder
c) Lacquer
d) Solvent
Answer- b) Binder
Ques 6. To exclude soil samples from different sources, the comparison of colour should be carried out under:
a) Daylight
b) Incandescent light
c) Fluorescent light
d) All of the above
Answer- d) All of the above
Ques 7. Besides silica, the main constituent of Gypsum soil is:
a) Calcium Carbonate
b) Calcium Sulphate
c) Ferric Oxide
d) Aluminium Oxide
Answer-b) Calcium Sulphate
Ques 8. The main constituent of Kaolinite clay soil is:
a) CaCO3
b) Hyrdogen Aluminium Silicate
c) MgCO3
d) Sodium Carbonate
Answer- c) MgCO3
Ques 9. Soil sample when moistened with few drops of water and the concentrated hydrochloric acid gives yellow colour due to presence of:
a) Lime
b) Iron
c) Zinc
d) Aluminium
Answer- b) Iron
Ques 10. Bromoform, a high density liquid used in density gradient analysis of soil, can be replaced with:
a) Methyl Alcohol
b) Kerosene
c) Methylene Iodide
d) Xylene
Answer- c) Methylene Iodide