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

Total Questions: 100

41. Emulsion is a coating on all photographic films and papers consisting of light-sensitive silver salt in a

Correct Answer: B. gelatine medium

42. Primary high explosive used in percussion cap of cartridge is

Correct Answer: A. lead azide

43. Infrared spectra of paint sample without any preprocessing of sample can be obtained by technique of

Correct Answer: A. diamond anvil cell sampling FTIR

44. Identification of nature of adulterants in cement sample can be carried out easily by

Correct Answer: B. X-ray diffractometer

45. Aluminium, calcium, magnesium and cobalt are components of

Correct Answer: B. blue colour safety glass

46. Radial fracture of glass can be helpful in determining

Correct Answer: B. sequence of bullet holes in glass

47. In the context of two statements, which one of the following as correct?

Statement 1 (S₁): Cement is made by mixing together calcareous and argillaceous material at high temperature.

Statement 2 (₂): Property of cement depends on various phase composition of clinker and on the structure of individual crystal phase.

Correct Answer: A. Both S₁ and S₂ are correct

48. Most of the chat and instant message conversations are stored in computer in

Correct Answer: B. RAM

49. During gravimetric method of analysis of cement filtrate-D is used for calculation of

Correct Answer: A. calcium oxide

50. Soil sample when moistened with few drops of water and concentrated hydrochloric acid gives yellow colour due to presence of

Correct Answer: B. iron