Multiple Choice Questions on Forensic Physics

1.) The example of the Vegetable fiber is:

A. Jute

B. Polyester

C. Silk

D. Hair

2.) Some crystalline materials have two indices of refraction. The phenomenon is called:

A. Fringe Width

B. Birefringence

C. Double Refractive Index

D. Refraction

3.) What is required in order to estimate the speed of vehicle from the length of skid?

A. Information about the amount of damage caused to the vehicle(s) is required

B. Test driving

C. Eyewitness is required

D. Video footage of the accident is required

4.) Compression tool marks are best formed by:

A. Firing pin

B. Wrench

C. Scissors

D. Knife

5.) Floatation method used for the analysis of glass samples is used to determine:

A. Refractive Index

B. Density

C. Temperature

D. Weight

6.) Which is one of the preferred methods for fiber analysis?

A. Fourier Transform Infrared Spectrophotometry

B. Float test

C. Flame test

D. Density Gradient Method

7.) Microscopic fibers are best collected from clothing with the help of :

A. A thorough brushing

B. Tweezers

C. Shaking the article into a bag

D. Sticking on transparent adhesive tape

8.) Which is the source of Infrared radiation?

A. Nernst Glower

B. Helium Lamp

C. Deuterium Lamp

D. Hydrogen Lamp

9.) Which one is the major ingredient in the Cement composition?

A. Silicon Dioxide

B. Calcium Oxide

C. Iron oxide

D. Aluminum Oxide

10.) The Ordinary Portland Cement (OPC) seized for forensic tests analysis is suitably packed in :

A. Paper bag

B. Jute bag

C. Steel container

D. Cloth bag

11.) Composed of a Mixture of Cement, Sand and Gravel is called :

A. Reinforced Concrete

B. Mortar

C. Coarse Aggregate

D. Concrete

12.) How should soil samples be preserved if they can’t be subjected to forensic tests soon after collection?

A. Store in dark and hot place

B. Store at 4 degree centigrade in refrigerator

C. Store in dry storage space at room temperature

D. Store in a dark and cool place

13.) Control soil samples for forensic analysis is best collected in:

A. Paper bag

B. Jute bag

C.Steel container

D. Cloth bag

14.) Which technique is best suited for distinguishing most paint formulations?

A. Polarizing microscope

B. Visible light micro spectrophotometer

C. Comparison microscope

D. Pyrolysis gas chromatography

15.) The best material for casting the pattern on metallic surface is:

A. Plaster of Paris

B. Dental Mass

C. Plasticine

D. Wood’s metal

16.) Which mode of illumination is the best for studying striated tool marks?

A. Normal illumination

B. Diffused light

C. Axial illumination

D. Parallel illumination

17.) The tire treads recorded on moldable material such as earth, clay, snow etc. are known as:

A. Shadow

B. Imitations

C. Prints

D. Impressions

18.) Which acoustic parameter is associated with the characteristic features of the oral cavity?

A. Glottal Vibration

B. Fundamental frequency

C. Pitch contour

D. Formant frequencies

19.) Which of these fibers are derived from animals?

A. Kashmiri, Wool

B. Pashmina, Rayon

C. Cotton, Polyesters

D. Ethylene, Wool

20.) The video editing in digital video format is:

A. In camera editing

B. Sequential editing

C. Non-linear editing

D. Linear assemble editing

21.) Which one of the fibers is NOT the protein fiber?

A. Silk

B. Rayon

C. Wool

D. Fur

22.) Heat resistant glass contains a mixture of silica (75% to 80 %) and which one of the specific constituent (up to 15%):

A. Aluminum Oxide

B. Magnesium Oxide

C. Lead Oxide

D. Boron Oxide

23.) Sequence the electromagnetic waves in decreasing order of wavelength?

A. Radio waves, Infrared, Microwaves, Ultraviolet, Visible, γ -rays , X-rays,

B. Radio waves, Microwaves, Infrared, Visible, Ultraviolet, X-rays, γ-rays

C. Radio waves, Ultraviolet, Microwaves, Infrared, X-rays, Visible, γ-rays

D. X-rays, Radio waves, γ –rays , Microwaves, Visible, Infrared, Ultraviolet

24.) Glass which is strengthened by introducing stress through rapid heating and cooling of its surface is called:

A. Leaded Glass

B. Tempered Glass

C. Insulated Glass

D. Laminated Glass

25.) An instrument that measures the radiant power of two electromagnetic beams is called:

A. Detector

B. Filter

C. Monochromator

D. Photometer

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26.) Which one of the following is added to the clinker to prevent the rapid reaction?

A. Gypsum

B. Tetra calcium Aluminoferrite

C. Extra cement

D. Water

27.) The turbidity test in the sandy soil sample when conducted experimentally:

A. Takes considerably longer time to settle

B. Rapidly turns almost 100% transparent

C. Completely changes the color of solution

D. Remains (translucent) turbid

28.) From the tire impressions left at the crime scene, it is possible to determine:

A. The make and model of the vehicle

B. The speed at which the vehicle was moving

C. The style and /or manufacturer of the tire

D. The wear and mileage on the tire

29.) Glare in photography can be best removed by:

A. Using filters

B. Using a low intensity illumination

C. Using a polarising screen

D. Using oblique light

30.) Thickness of a specimen entirely in focus under a microscope is known as:

A. Depth of Focus

B. Field of View

C. Magnification

D. None of the options

31.) The wavelength of x-ray:

A. 350-700nm

B. 750nm-1mm

C. 10-400nm

D. 10-.01 nm

32.) The process which leaves impressions on the reverse side of the note is:

A. Intaglio process

B. Sophisticated Printing

C. Offset Printing

D. None of the Above

33.) Which of the following has the shortest wave length?

A. Infrared rays

B. Ultraviolet rays

C. Gamma rays

D. X-Rays

34.) Which technique is non-destructive for identification and quantitation of trace elements of forensic samples?

A. ICP-Atomic Emission Spectrophotometry

B. Neutron Activation Analysis

C. Atomic Absorption Spectrophotometry

D. Spectrographic analysis

35.) The following follows 3-R rule:

A. Soil

B. Glass

C. Paint

D. Tyre marks

36.) The binder composition of paint is provided by:

A. Gas chromatography

B. Gas Chromatography- Mass Spectrometry

C. IR Spectroscopy

D. Neutron Activation Analysis

37.) The following process is responsible for formation of soil:

A. Erosion

B. Weathering

C. Water

D. None of the above

38.) Mineralogical analysis can be done with the help of:

A. Scanning Electron Microscope

B. Energy Dispersive X-ray Spectroscopy

C. SEM-EDA

D. NAA

39.) Bulk density test is used to determine:

A. Soil Texture

B. Soil Color

C. Soil Sieving

D. Paint Color

40.) Black Mineral color in the soil is generally related to the presence of:

A. Copper

B. Chromium

C. Iron

D. Magnesium and Iron

41.) IR Spectroscopy is used in the analysis of:

A. Explosives

B. Paints

C. Pigments

D. All of the above

42.) The process of formation of small droplet from the liquid sample is called as:

A. Atomization

B. Nebulization

C. Liquidizing

D. Conversion

43.) Mull technique is used for the sampling of:

A. Solids

B. Liquids

C. Gases

D. Soil

44.) Hammer marks are:

A. Striation Marks

B. Cut Marks

C. Compression Marks

D. None of the Above

45.) Nodes are seen in:

A. Cotton

B. Wool

C. Silk

D. Linen

46.) The technique used for comparison of trace element profile of soil samples is:

A. Microscopic Examination

B. Spectrographic Analysis

C. Density Gradient Analysis

D. Flame Test

47.) Which statement is true when a pointed object makes impact on a window glass pane?

A. Radial cracks appear first, starting on the side opposite to the impact side

B. Radial cracks form first, starting on the same side as the applied force

C. Radial and Concentric fractures are formed simultaneously

D. Concentric fractures form first, on the same side as the applied force

48.) Which size of soil particles is termed as clay?

A. 0.02 mm

B. 0.2 mm

C. 0.002 mm

D. Under 0.002 mm

49.) Approximate percentage range of Aluminium Oxide in Ordinary Portland Cement is:

A. 3 – 8 %

B. 3 – 10 %

C. 4 – 15 %

D. 17 – 25 %

50.) For preservation of shoe print/tire marks on soft earth, the best way is:

A. Rough /finished sketch

B. Photography and casting

C. With an electrostatic device

D. Using a high-voltage electrode

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Answer-Sheet

1.A11.D21.B31.D41.D
2.B12.C22.D32.C42.A
3.B13.C23.C33.D43.A
4.A14.D24.B34.B44.C
5.B15.D25.D35.B45.D
6.A16.B26.A36.C46.B
7.D17.D27.A37.B47.A
8.A18.D28.C38.C48.D
9.B19.A29.C39.A49.A
10.C20.C30.A40.D50.B