UGC NET Exam June 2019 Forensic Science Paper-2 Question Paper with Answer Key & Explanation

61. The presence of two isotopes of Bromine i.e Br⁷⁹ and Br⁸¹ can simply be detected in mass spectra when the peak intensities of their M and M+2 are in the ratio of:

A.  1:3	B. 1:1
C. 3:1	D. 1:2

Ans.- B. 1:1

62. Determination of species of origin from bone is done by:

i. Comparative anatomy	ii. Microscopy
iii. Precipitin Test	iv. Phosphorescence

A. i, ii and iii	B. ii and iii
C. i and iii	D. i , iii and iv

Ans.- A. i, ii and iii

63. Micellar extraction of forensic analytes is carried out in the presence of:

A. Surfactant	B. Reverse phase
C. Critical fluid	D. Florisil

Ans.- A. Surfactant

64. The age of ink can be determined by analyzing the sample under:

i. GC-MS	ii. . IR Spectroscopy
iii. X-ray Fluorescence	iv. Raman Spectroscopy

A. i, iii, iv	B. ii, iii, iv
C. i, ii, iv	D. i, ii, iii

Ans.- C. i, ii, iv

65. Which drug is used in carrying out “Narco Analysis’?

A. Sodium Narcol	B. Sodium Amylate
C. Sodium Pentothal	D. Amphetamine

Ans.- C. Sodium Pentothal

66. Cibra orbitalia ( a fine porosity visible on the ceiling of orbit ) is a sign of:

A. Syphilis	B. Anemia
C. Renal stone	D. Blindness

Ans.- B. Anemia

67. The sequence of eruption of permanent teeth in human is:

A. 1^st Incisor, 1^st Molar, 2^nd Molar, Canine

B. 1^st Incisor, 1^st Molar, Canine, 3^rd Molar

C. 1^st Incisor, 2^nd Incisor, 1^st Molar, 2^nd Molar

D. 1^st Molar, 2^nd Incisor, Canine, 2^nd Molar

Ans.- D. 1^st Molar, 2^nd Incisor, Canine, 2^nd Molar

68. Statement 1(S1): Bovine Serum Albumin (BSA) is added to PCR mixture to reduce the effect of PCR inhibitors.

Statement 2 (S2): BSA acts as a binding site for PCR inhibitors.

Choose the correct answer:

A. S1 and S2 both are correct and S2 is explanation of S1

B. S1 and S2 both are correct and S2 is not explanation of S1

C. S1 is true and S2 is wrong

D. S1 and S2 both are wrong

Ans.- A. S1 and S2 both are correct and S2 is explanation of S1

69. The designation of 12- bore means that the internal cross sectional diameter of gun’s barrel is equal to:

A. 12mm

B. The diameter of spherical lead ball weighing 1/12 of the pound

C. The diameter of spherical lead ball weighing 1/12 of the pound

D. 12 inch

Ans.- B. The diameter of spherical lead ball weighing 1/12 of the pound

70. The antidote for methanol poisoning is:

A. Ethylene glycol	B. Milk of Magnesia
C. Amphetamine	D. Ethyl Alcohol

Ans.- D. Ethyl Alcohol