UGC NTA NET/JRF Exam, Forensic Science, June-2019

Total Questions: 100

71. Lifting of tool marks can be performed by the following:

(a) Piaster of Paris
(b) Dental casting material
(c) Sulphur
(d) PLGA
Choose the correct combination:
Code:

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

72. In the contest of two statements, which one of the following is correct?

Statement 1 (S₁): Walker's test gives pink colour on the swabs collected from the area suspected to have firearm discharge residue.

Statement 2 (S₂): The pink colour is due to the presence of nitrite in the firearm discharge residue.

Correct Answer: B. Both S₁ and S₂ are correct

73. In gas chromatography technique, which of the following gases is NOT suitable?

Correct Answer: C. Oxygen

74. Photomultiplier tube is NOT suitable for detection of

Correct Answer: D. IR photons

75. The presence of two common isotopes of bromine, i.e., ⁷⁹Br and ⁸¹Br can simply be detected in mass spectra when the peak intensities of their M and M+2 are in the ratio of

Correct Answer: B. 1: 1

76. Half-life of archaeological objects can be determined by

Correct Answer: C. NAA

77. Typical LOD (ng/injection) value for refractive index detector in HPLC is

Correct Answer: A. 100

78. Match List-I with List-II:

List-I (Description)List-II (Term)
(a) Writing weakness marked by irregular shaky strokes(i) Pen emphasis
(b) The element of writing movement(ii) Shading
(c) The act of intermittently forcing the pen against the paper(iii) Tremor
(d) A widening of pen stroke due to added pressure on a flexible pen nib(iv) Rhythm

Choose the correct option from those given below:

Option(a)(b)(c)(d)
A.(i)(iii)(iv)(ii)
B.(ii)(i)(iii)(iv)
C.(iv)(ii)(i)(iii)
D.(iii)(iv)(i)(ii)
Correct Answer: D.

79. The age of the ink can be determined by analyzing the samples by

(a) GC-MS
(b) IR spectroscopy
(c) X-ray fluorescence
(d) Raman spectroscopу
Choose the correct answer from the code given below:

Correct Answer: C. (a), (b), (d)

80. ТАРPI stands for

Correct Answer: B. Technical Association of Pulp and Paper Industry