100+ MCQs on Forensic Ballistics

1. The science, that deals with the study, comparison, and identification of weapons alleged to have been used in the commission of a crime is referred to as _____.

A. Firearm Study

B. Forensic Gun Study

C. Forensics

D. Forensic Ballistics

Answer: D. Forensic Ballistics

2. The tumbling of the bullet in its flight and hitting the target sideways as a result of not spinning on its axis. 

A. Key-hole shot

B. Back shot

C. Mid range trajectory

D. Point Blank

Answer:   A. Key-hole shot

3. The power of the bullet that results in the instantaneous death of the victim is called:

A. Zero power

B. Power ranger

C. Shocking power

D. Power range

Answer: C. Shocking power

4. What do you call the depth of entry of the bullet in the target?

A. Terminal Velocity

B. Terminal Penetration

C. Terminal Ballistics

D. Terminal Power

Answer: B. Terminal Penetration

5. Shotgun pellets made from lead especially hardened by the addition of a slight amount of antimony. This refers to:

A. Shot Gun

B. Chilled Shot

C. Shot ballistics

D. All of these

Answer: B. Chilled Shot

6. This is caused by the flame or hot gases not by the hot projectiles as is commonly believed. It is also known as burning or charring.

A. Blackening

B. Tattooing

C. Scorching

D. Pink coloration

Answer: C. Scorching

7. The main advantage of the double-action revolver over the single-action revolver is that

A. it can be fired rapidly

B. it can be fired single shot

C. there is no recoil

D. better fire power

Answer: A. it can be fired rapidly

8. A gigantic bow or catapult which was used to hurl large objects such as stones at a particular distance to deter animals or enemy forces.

A. Catapult

B. Balle

C. Ballein

D. Ballista

Answer: D. Ballista                            

9. The scientific study of the propulsion and motion of projectiles such as bullets, artillery shells, rockets and guided missiles.

A. Propulsion

B. Expulsion

C. Repulsion

D. Extraction

Answer: A. Propulsion

10. The British engineer Benjamin Robins conducted many experiments in interior ballistics. His findings justly entitle him to be called the.

A. father of modern gunnery

B. father of modern ballistics

C. father of interior ballistics

D. father of forensic ballistics.

Answer: A. father of modern gunnery

11. Late in the 18th century the Anglo-American physicist Benjamin Thompson made the first attempt to measure the pressure generated by gunpowder. The account of his experiments was the most important contribution to:

A. Exterior ballistics

B. Forensic Ballistics

C. Interior ballistics

D. None of these

Answer: C. Interior ballistics

12. An arbitrary index of the quickness that burning propellant changes into gas. It is the rate controlled by the chemical composition, the size and shape of the propellant grains, and the pressure at which the burning takes place.

A. Gas Power

B. Burning Rate

C. Propulsion Rate

D. Bulk Density

Answer: B. Burning Rate

13. It is the equal and opposite reaction of the gun against the forward movement of the bullet during the explosions.

A. Residual Pressure

B. Recoil

C. Backfire

D. Misfire

Answer: B. Recoil

14. The speed per unit of time of the M16 is 3,300 ft/sec. This refers to:

A. Fire power

B. Velocity

C. Energy

D. All of these

Answer: B. Velocity

15. The noise created at the muzzle point of the gun due to the sudden escape of the expanding gas coming in contact with the air in the surrounding atmosphere at the muzzle point.

A. Muzzle Blast

B. Muzzle Energy

C. Range noise

D. Fire power

Answer: A. Muzzle Blast

16. What is the actual curved path of the bullet during its flight from the gun muzzle to the target?

A. Yaw

B. Accuracy

C. Trajectory

D. Velocity

Answer: A. Yaw           

17. The means that the bullet may lose its speed very rapidly during its flight the air. This is a number that relates to the effect of air drag on the bullet’s flight and which can be used to later predict a bullet’s trajectory under different circumstances through what are called “drag tables.”

A. Bullet trajectory

B. Critical zone

C. Ballistics Coefficient

D. Down Range

Answer: C. Ballistics Coefficient

18. The mechanism or system of a hand gun that covers manipulating, loading, firing and extracting rounds.

A. Action

B. Breach

C. Chambering

D. Grouping

Answer: A. Action

19. The way the bullet actually flies through the air, including the overall mass, air drag, drop, and wind drift.

A. Internal Ballistics

B. Terminal Ballistics

C. Impact Ballistics

D. External Ballistics

Answer: D. External Ballistics

20. The metal tube on the end of the gun that the bullet is propelled out of.

A. Chamber

B. Cylinder

C. Barrel

D. Muzzle

Answer: C. Barrel

21. A round that contains gunpowder but no bullet.

A. Ammo

B. Blank

C. Cartridge

D. Slug

Answer: B. Blank

22. A specific type of black/blue finish that is applied to the metal parts of handguns.

A. Blacking

B. Bluing

C. Graying

D. Browning

Answer: B. Bluing

23. The empty casing of a round, which is usually made out of brass.

A. Brass

B. Silver

C. Tin

D. Metal

Answer: A. Brass

25. Refers to a specific size of round, usually labelled using the diameter of the bullet.

A. Cartridge

B. Bullet

C. Caliper

D. Caliber

Answer: D. Caliber

26. What is the single projectile package called, that gets loaded into the gun:

A. Slug

B. Caliper

C. Cartridge

D. Round

Answer: A. Slug

27. The empty shell of a round.

A. Cartridge

B. Casing

C. Brass

D. Bullet

Answer: B. Casing

28. A cartridge with its primer located in the center of the base of the case.

A. Firing pin

B. Firing pin block

C. Centerfire

D. Primer

Answer:  C. Centerfire

29. Developed in the early 11th century, flint is released by the trigger mechanism that strikes a steel plate to shower sparks into the pan filled with powder.

A. Matchlock

B. Wheellock 

C. Flintlock

D. Percussion

Answer: C. Flintlock

30. In the early 16th century, improvement included the wheellock mechanism in which a spinning wheel against a metal plate showered sparks into the pan holding priming powder.

A. Matchlock              

B. Wheellock

C. Flintlock

D. Percussion

Answer: B. Wheellock

31. One of the following is not a characteristic of a muzzle loader gun.

A. Spiral grooves in the bore

B. Powder and bullet loaded from top of the barrel

C. Smooth bore with a round lead ball

D. Limited range and accuracy

Answer: A. Spiral grooves in the bore

32. A German gunsmith who developed a reliable small caliber automatic pistol in 1866.

A. Carl Walther

B. Hiram Maxim

C. Georg Luger

D. Richard Gatling

Answer: A. Carl Walther

33. He designed the 9 mm cartridge introduced in 1902 for the Luger semi-automatic pistol.

A. Carl Walther                                  

B. Hiram Maxim 

C. Georg Luger

D. Richard Gatling

Answer: C. Georg Luger

34. An American-born inventor of the Maxim machine gun.

A. Carl Walther

B. Hiram Maxim

C. Georg Luger

D. Richard Gatling

Answer: B. Hiram Maxim

35. An American inventor of the first successful machine gun, named after him.

A. Carl Walther                                    

B. Hiram Maxim

C. Georg Luger

D. Richard Gatling

Answer: D. Richard Gatling

36. He invented the Johnson model 1941 rifle, one of the most innovative rifles during its period.

A. Robert Johnson

B. Albert Johnson

C. Melvin M. Johnson Jr.

D. Calvin M. Johnson

Answer: C. Melvin M. Johnson Jr.

37. He pioneered the making of the first handheld machine gun.

A. Oliver Fischer Winchester

B. John T. Thompson

C. Daniel “Carbine” Williams

D. Daniel B. Wesson.

Answer: B. John T. Thompson

38. He manufactured the Winchester repeating rifle which was a much re-designed descendant of the Volcanic rifle of some years earlier.

A. Oliver Fischer Winchester

B. Daniel Williams

C. John Fischer Winchester

D. Daniel B. Wesson

Answer: A. Oliver Fischer Winchester

39. The Father of modern ballistics. He invented the comparison microscope and helixometer.

A. Col. Calvin Goddard

B. Col. Alvin Goddard

C. Col. Kevin Goddard

D. Col. Darwin Goddard

Answer: A. Col. Calvin Goddard

40. He pioneered the breech loading single shot rifle.

A. John Browning

B. Henry Derringer

C. Samuel Colt

D. Patrick Ferguson

Answer: A. John Browning

41. A Famous 19th century maker of pocket pistol.

A. Patrick Ferguson

B. John Browning

C. Samuel Colt

D. Henry Derringer

Answer: D. Henry Derringer

42. He designed his own rifle which was one of the first breech-loading rifles to be widely tested by the British military.

A. John Browning

B. Samuel Colt

C. Patrick Ferguson

D. Henry Derringer

Answer: C. Patrick Ferguson

43. He was a Scottish Presbyterian clergyman who invented the percussion ignition.

A. John Marlin

B. Daniel Williams

C. Alexander Forsyth

D. Henry Derringer

Answer: C. Alexander Forsyth

44. He invented the Uzi sub-machine gun.

A. John Marlin

B. Daniel Williams

C. Uziel Gamal

D. Uziel Gal

Answer: D. Uziel Gal

45. He is the father of the semi-automatic US rifle cal. 30 M1.

A. John Garand

B. Eliphalet Remington

C. James Garand

D. Daniel Williams

Answer: A. John Garand

46. Russian designer of the the AK-47 assault rifle.

A. Mike Kalashnikov                         

B. John Marlin

C. Mikhail Kalashnikov

D. Patrick Ferguson

Answer: C. Mikhail Kalashnikov

47. Founder of Marlin Firearms Co.Famous for the Marlin cal. 22 carbine.

A. James Mahon Marlin                    

B. John Mahon Marlin

C. Jack Marlin

D. Jones Marlin

Answer: B. John Mahon Marlin

48. He is one of the first rifle makers. He is a blacksmith who made a revolutionary sporting rifle using a firing mechanism bought from a dealer producing the barrel himself.

A. Benjamin Robins                        

B. Elisha King Root

C. Eliphalet Remington

D. Roger Bacon

Answer: C. Eliphalet Remington

49. One of the first to state a sound ballistic theories.

A. Elisha King Root                          

B. Berthold Schwartz

C. Roger Bacon

D. Benjamin Robins

Answer: D. Benjamin Robins

50. Helped Samuel colt synthesize the manufacturing of firearms.

A. Elisha King Root                          

B. Berthold Schwartz

C. Roger Bacon                                

D. Benjamin Robins

Answer: A. Elisha King Root

51. He is considered as the first European to describe a mixture containing the essential ingredient of gun powder.

A. Elisha King Root

B. Berthold Schwartz

C. Roger Bacon

D. Benjamin Robins

Answer: C. Roger Bacon

52. Partner of Horace Smith in making revolver.

A. Daniel Wesson                           

B. Benjamin Wesson

C. Craig Wesson                            

D. Samuel Wesson

Answer: A. Daniel Wesson

53. He is the maker of the first known carbine firearms.

A. Daniel “Carbine” Williams           

B. Darwin “Carbine” Williams    

C. John “Carbine” Williams

D. Mike “Carbine” Williams.

Answer: A. Daniel “Carbine” Williams

54. The large ring surrounding the breech end of the barrel which provides a connection between the barrel and the recoil system.

A. Trigger guard                                   

B. Anvil

C. Trigger spring

D. Yoke

Answer: D. Yoke

55. An internal metal component in a boxer primer assembly against which the priming mixture is crushed by the firing pin blow.

A. Shearing                                     

B. Trigger guard   

C. Anvil

D. Trigger spring

Answer: C. Anvil

56. A flanged metallic cup used in shot-shell primer assemblies that provides a rigid support for the primer cup and anvil.

A. Paper disc                                    

B. Battery cup

C. Primer mixture

D. Primer cup

Answer: B. Battery cup

57. The controlled expansion of a bullet upon impact with a target.

A.  Palm Swell

B. Mushrooming

C. Pedestalled

D. Parkerizing

Answer: A. Palm Swell

58. The cutting of metal from the surface of a bullet due to cylinder misalignment in a revolver.

A.  Abrasion marks

B. Shaving

C. Abrasive machining

D.Rolling block

Answer: B. Shaving

59. Form on the bearing surface of bullets as they enter the rifling of the barrel before the bullet engages the rifling.

A. Skid marks

B. Action marks

C. Slide

D. Anvil marks

Answer: A. Skid marks

60. The escaping of gases past a fired bullet while the bullet is still in the barrel.

A.  Backspatter

B. Bearing surface

C. Barrel extension

D. Blowby

Answer: D. Blowby

61. The accumulation of lead or bullet jacket material in the bore of a firearm due to the passage of bullets.

A. Leading                                         

B. Ballistite

C. Blowback


Answer: A. Leading

62. A piece of cloth used with a rod to clean the bore of a firearm.

A. Fulminate of mercury            

B. Nitro wad 

C. Patch

D. Press forging

Answer: C. Patch

63. An action requiring the manual cocking of the hammer before sufficient pressure on the trigger releases the firing mechanism.

A. Single-Action                            

B. Automatic  

C. Double-action

D. Semi-automatic

Answer: A. Single-Action

64. An inert cartridge that cannot be fired.

A. Dummy ammunition                     

B. Disintegrating bullet

C. Conoidal bullet

D. Mushroom bullet

Answer: A. Dummy ammunition

65. The air that is compressed and moves out spherically from a firearm’s muzzle after firing a projectile.

A. Bullet splash

B. Muzzle wave

C. Choke

D. Bunter

Answer: B. Muzzle wave

66. A device at or in the muzzle end of a barrel that uses the emerging gas behind the projectile to reduce recoil.

A. Climb

B. Muzzle Brake

C. Latch

D. Lock plate

Answer: B. Muzzle Brake

67. When the first chamber of a jacketed bullet expands and the rear chamber holds together for penetration.

A. Convex

B. Correlations

C. Cordite

D. Controlled expansion

Answer: D. Controlled expansion

68. A plastic, paper, or fiber disk used to keep ammunition components in place or separated.

A. Card Wad                               

B. Vent

C. Tumble                                   

D. Wad

Answer:  D. Wad                   

69. A thin card-like disc used in shot-shells as an overshot wad, undershot wad, and over-powder wad.

A. Card wad         

B. Filler wad

C. Wad

D. Cup wad

Answer: A. Card wad

70. A plastic or paper inserts surrounding the shot charge in a shot-shell to reduce distortion.

A. Card wad

B. Filler wad

C. Shot collar

D. Cup wad

Answer: C. Shot collar

71. Circular disc of various thicknesses used to adjust the volume of the contents of a shot-shell.

A. Card wad                                 

B. Filler wad

C. Vent

D. Cup wad

Answer: B. Filler wad

72. A powder and shot separator of a very shallow cup design, which when loaded with lips down acts to help seal powder gases and so protect the rear of the shot column.

A. Card wad                                 

B. Filler wad

C. Wad

D. Cup wad

Answer: D. Cup wad

73. Various designs of shot cups made of plastic and designed to reduce pellet deformation during barrel travel

A. Shot protector wad                   

B. Filler wad

C. Combination Wad

D. Cup wad

Answer: A. Shot protector wad

74. One piece of multi-piece plastic wad which may combine the following items: shot protector, filler wad, and over-powder wad.

A. Shot protector wad                   

B. Filler wad

C. Combination Wad

D. Cup wad

Answer: C. Combination Wad

75. A bullet with a deep base cavity.   

A. Hollow base bullet                          

B. Incendiary bullet

C. Hollow point bullet

D. Jacketed bullet

Answer: A. Hollow base bullet

76. A collection and cataloging of test-fired bullets and cartridge cases from known firearms.

A. Classifying

B. Bullet comparison

C. Known standards

D. Collected standards

Answer: C. Known standards

77. The number, width, and direction of twist of the rifling grooves in a barrel of a given caliber firearm. 

A. General Rifling Characteristics

B. Gross forming

C. Groove diameter

D. Intercomparison

Answer: A. General Rifling Characteristics

78. A discipline of forensic science that has as its primary concern to determine if a bullet, cartridge case, or other ammunition component was fired by a particular firearm.

A. Ballistic examination

B. Firearms identification

C. Ballistics

D. Toolmark identification

Answer: B. Firearms identification

79. A discipline of forensic science which has as its primary concern to determine if a toolmark was produced by a particular tool.

A. Ballistic examination                   

B. Firearms identification

C. Forensic Ballistics

D. Toolmark identification

Answer: D. Toolmark identification

80. Contour variations, generally microscopic, on the surface of an object caused by a combination of force and motion where the motion is approximately parallel to the plane being marked.

A. Striations                                  

B. Class characteristics

C. Sub-class characteristics

D. Toolmarks

Answer: A. Striations

81. Discernible surface features of an object which are more restrictive than class characteristics.

A. Striations

B. Class characteristics

C. Sub-class characteristics

D. Toolmarks

Answer: C. Sub-class characteristics

82. Measurable features of a specimen that indicate a restricted group source. They result from design factors and are therefore determined prior to manufacture.

 A. Striations                                

B. Class characteristics  

C. Sub-class characteristics

D. Toolmarks

Answer: B. Class characteristics

83. Marks produced by the random imperfections or irregularities of tool surfaces. These random imperfections or irregularities are produced incidental to manufacture and/or caused by use, corrosion, or damage.

A. Individual characteristics  

B. Class characteristics

C. Sub-class characteristics   

D. Toolmarks

Answer: A. Individual characteristics

84. Striae or patterns of minute lines or grooves in an object. In firearm and toolmark identification these marks are characteristic of the object which produced them and are the basis for identification.

A. Individual characteristics

B. Toolmarks

C. Microscopic marks

D. Class characteristics

Answer: C. Microscopic marks

85. The process of determining whether or not the details of striated marks or impressions on two objects correspond, such as fired and unfired cartridge cases and shot-shell cases.

A. Pattern matching

B.  Land and Groove identification

C. Pattern Identification

D. Toolmark identification

Answer: A. Pattern matching

86. The earliest known toolmark comparison case involving firearms occurred in London in

A. 1835                                                      

B. 1837

C. 1836

D. 1838

Answer: A. 1835

87. Published the first work describing wounds resulting from small caliber firearms.

 A. Henry Goddard                            

B. John Sedgwick   

C. Monsieur Noilles

D. Stonewall Jackson

Answer: C. Monsieur Noilles

88. A firearm with long barrel and for-end or forearm extending nearly to the muzzle.

A. Rifle                                     

B. Remington rifle  

C. Whitwoth rifles   

D. Musket

Answer: D. Musket

89. A portion of a firearm’s mechanism which ejects or expels cartridges or cartridge cases from a firearm.

A. Ejector                                             

B. breech face

C. Extractor

D. Firing pin

Answer: A. Ejector

90. The negative impressions on the bearing surface of a bullet caused by the rifling in the barrel from which it was fired.

A. Lapping                                                

B. Land and Groove impressions

C. Obturation

D. Parkerizing

Answer: B. Land and Groove impressions

91. The ignition component of a cartridge.

A. Priming mixture

B. Priming powder 

C. Priming Charge

D. Primer

Answer: D. Primer

92. The locking and cartridge head support mechanism of a firearm that does not operate in line with the axis of the bore.

A. Frame                                                

B. Breechblock

C. Mandrel

D. Box lock

Answer: B. Breechblock

93. Developed the helixometer, a magnifier probe used to examine the interior of firearm barrels and accurately measure the pitch of rifling.

A. Goddard and Waite          

B. Goddard and Gravelle

C. Doddard and Fisher

D. Waite and Fisher

Answer: C. Doddard and Fisher

94.  Essentially two microscopes are connected to an optical bridge allows the viewer to observe two objects simultaneously with the same degree of magnification.

A. Compound microscope

B. Comparison micoscope

C. Dual microscope

D. Complex microscope

Answer: B. Comparison microscope

95. He is considered by many firearm examiners to be the “father” of firearm and toolmark identification.

A. Calvin H. Goddard              

B. John H. Fisher 

C. Colonel H. W. Todhunter

D. Philip O. Gravelle

Answer: A. Calvin H. Goddard

96. The curve taken by the bullet while in flight is called

A. Rifling curves

B. Effective range

C. Drift

D. Maximum distance

Answer: C. Drift

97. A mechanism in a revolver that connects pivot between the frame and cylinder.

A. Trigger spring

B. Trigger guard

C. Yoke

D. Anvil

Answer: C. Yoke

98. Proof Marks – It is the examination and testing of firearms by a recognized authority according to certain rules and stamped with a mark to indicate that they are safe for sale and used by the public.

A. Provisional Proof

B. Proof Marks

C. Skid Marks

D. Slippage Marks

Answer: B. Proof Marks

99. Among the following, which is a long smooth bored firearm that is designed to prepare a single shot?

A. Shotgun

B. Musket

C. Carbine

D. Caliber

Answer: B. Musket

100. It is the soft guiding metal that serves as the container for priming mixture, paper disc and anvil.

A. Primer cup

B. Primer mixture

C. Paper disc

D. Battery cup

Answer: A. Primer cup

101. An automatic weapon that can fire from 400 to 1,600 rounds of ammunition each minute.

A. Armalite

B. Uzi

C. Machine gun

D. Glock

Answer: C. Machine gun

102. Historians considered that the age of gunpowder began with its first use as a propellant for a projectile on

A. 1313

B. 1413

C. 1280

D. 1350

Answer: A. 1313

103. One from Hartford, Connecticut, who produced the first practical revolver and became famous for its .45 caliber.

A. Samuel Colt

B. Carl Walther

C. Oliver Winchester

D. John C. Garand

Answer: A. Samuel Colt

105. It includes rocket launchers and such mounted guns as howitzers, mortars, antiaircraft guns, and naval guns.

A. Gunnery

B. Artillery

C. Musketry

D. Ballistics

Answer: B. Artillery

106. That part of the handgun designed in a metal tube through which the bullet is fired.

A. Grip

B. Frame

C. Barrel

D. Rifling

Answer: C. Barrel

107. The shape metal while hot and plastic by hammering or by a forging process, either by hand or by machine.

A. Forging

B. Casting

C. Blanking

D. Shearing

Answer: A. Forging

108. To cut sheet or bar metal between two blades which pass immediately to each other.

A. Forging

B. Casting

C. Blanking

D. Shearing

Answer: D. Shearing

109. Cutting or pressing a piece of metal from a sheet. In ammunition manufacture, the usable part of a blanking operation is the material removed from the hole, usually a disk.

A. Forging

B. Casting

C. Blanking

D. Shearing

Answer: C. Blanking

110. An object at or near a finished shape which is produced by the solidification of a substance in a mold. Pouring molten metal into a mold to produce an object of the desired shape.

A. Forging

B. Casting

C. Blanking

D. Shearing

Answer: B. Casting

111. To cut out, bend or form with a stamp or die.

A. Extrusion

B. Hammer Forging

C. Drawing

D. Stamping

Answer: D. Stamping

112. A process using dies and punches to simultaneously reduce the diameter and extend the length of a cup-shaped metal part. Used for both cartridge cases and bullet jackets.

A. Extrusion

B. Hammer Forging

C. Drawing

D. Stamping

Answer: C. Drawing

113. The process of forming the interior and/or exterior shape of the barrel of a firearm by hammering.

A. Extrusion

B. Swagging

C. Drawing

D. Stamping

Answer: B. Swagging

114. The slow forcing of material under high pressure through a die reduce its diameter. This process is generally performed in a hydraulic press. Lead wire used in bullet making is extruded. Impact extrusion can be used to make bullet jackets and cartridge cases.

A. Extrusion

B. Swagging

C. Drawing

D. Stamping

Answer: A. Extrusion

115.  Cutting holes in metal with a twist drill.

A. Abrasive machining

B. Broaching

C. Reaming

D. Drilling

Answer: D. Drilling

116.To widen the opening of a hole, Countersink: to enlarge or dress out a hole with a reamer, to enlarge the bore of a gun.

A. Abrasive machining

B. Broaching

C. Reaming

D. Drilling

Answer: C. Reaming

117. Finishing surfaces by drawing or pushing a cutter called a broach entirely over and past the surface. A broach has a series of cutting teeth arranged in a row or rows, graduated in height from the teeth that cut first to those that cut last.

A. Abrasive machining

B. Broaching

C. Reaming

D. Drilling

Answer: B. Broaching

118. The use of abrasives rather than high-speed steel or tungsten carbide cutting tools.

A. Abrasive machining

B. Broaching

C. Reaming

D. Drilling

Answer: A. Abrasive machining

119. Metal-cutting machining in which the workpiece is firmly attached to a horizontal table that moves back and forth under a single-point cutting tool. The tool-holding device is mounted on a cross-rail so that the tool can be fed (moved) across the table in small, discrete, side-ward movements at the end of each pass of the table.

A. Planing

B. Boring

C. Milling

D. Turning

Answer: A. Planing

120. Producing smooth and accurate holes in a work piece by enlarging existing holes with a bore, which may bear a single cutting tip of steel, cemented carbide, or diamond or maybe a small grinding wheel.

A. Planing

B. Boring

C. Milling

D. Turning

Answer: B. Boring

121. Cutting metal by feeding against a rotating cutting tool called a milling cutter; milling machines cut flat surfaces, grooves, shoulders, inclined surfaces, dovetails, and T-slots. Various form-tooth cutters are used for cutting concave forms and convex grooves, for rounding corners, and for cutting gear teeth.

A. Planing

B. Boring

C. Milling

D. Turning

Answer: C. Milling

122. Turning operations involve cutting excess metal, in the form of chips, from the external diameter of a work piece and include turning straight or tapered cylindrical shapes, grooves, shoulders, and screw threads, and facing flat surfaces on the ends of cylindrical parts.

A. Planing

B. Boring

C. Milling

D. Turning

Answer: D. Turning

123. Shaping and planning operations involve the machining of flat surfaces, grooves, shoulders, T-slots, and angular surfaces with single-point tools.

A. Planing

B. Boring

C. Milling

D. Shaping

Answers: D. Shaping

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