UGC NTA NET/JRF Exam, Forensic Science, June-2021

Total Questions: 100

51. Which of the following is performed for field sobriety testing?

(a) Horizontal gaze nystagmus
(b) Walk and turn
(c) Running 100 m in 120 sec
(d) Stand on one foot
Choose the most appropriate answer from the options given below: 

Correct Answer: D. (a), (b) and (d) only

52. Lead is considered as most suitable material for the construction of projectiles because:

(a) It has high specific gravity
(b) Low-melting point
(c) Cannot be moulded in different shapes
(d) It is non-toxic
(e) Economical
Choose the correct answer from the options given below:

Correct Answer: D. (a), (b), (e) only

53. Type of firearm can be ascertained from fired bullet by studying:

(a) Width of lands and grooves
(b) Angle of twist of rifling
(c) Caliber of the bullet
(d) Weight of the bullet
(e) Colour of the bullet
Choose the correct answer from the options given below:

Correct Answer: D. (a), (b), (c)

54. The factors affecting the recoil are:

(a) The backward motion of the ejecta
(b) The forward motion of the ejecta
(c) The motion of the out-rushing gases
(d) The muzzle blast
Choose the most appropriate from the options given below:

Correct Answer: B. (b), (c), (d) only

55. Which of the following preparations are mostly used in FSLs for restoration of numbers from aluminium surfaces?

(a) Glycerin: Hydrofluoric acid : Nitric acid (3 : 2 : 1)
(b) Copper chloride : Hydrochloric acid : Water (200 : 5 : 1000)
(c) Chromium chloride : Hydrochloric acid : Water (9 : 12 : 10)
(d) Nitric acid: Hydrochloric acid : Water (1 : 5 : 6)
Choose the correct answer from the options given below: 

Correct Answer: C. (a) and (b) only

56. As per ASTM guidelines, identification of gasoline is confirmed by the presence of:

(a) C3-alkylbenzenes
(b) M-P- and O ethyl toluene
(c) 1, 2, 4 trimethyl benzene
(d) C7-cycloparaffzin
Choose the most appropriate answer from the options given below: 

Correct Answer: A. (a), (b) and (c) only

57. Which of the following are termed as "chemical reaction bomb"?

(a) Hydrochloric acid and aluminium
(b) Sodium hydroxide and aluminium
(c) Calcium sulphate and aluminium
(d) Calcium carbonate and aluminium
Choose the most appropriate answer from the options given below: 

Correct Answer: A. (a) and (b) only

58. Which of the following are methods of initiating an improvised explosive device?

(a) Time delay
(b) Energy delay
(c) Booby trap
(d) Bomber controlled
Choose the most appropriate answer from the options given below: 

Correct Answer: C. (a), (c) and (d) only

59. Which of the following are the formats of output images when created using FTK imager?

(a) dd
(b) EXIF
(c) SMART
(d) AFF
Choose the most appropriate answer from the options given below: 

Correct Answer: C. (a), (c) and (d) only

60. Visualization of latent print by silver physical developers best suit for:

(a) Porous surface
(b) Non-porous surface
(c) Semi-porous surface
(d) Polymer
Choose the most appropriate answer from the options given below:

Correct Answer: B. (a) and (c) only