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

Total Questions: 100

71. Given below are two statements-one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): The speed of burning of black powder and certain degree of its strength is controlled by the size of granulation.

Reason (R): As the size of granulation decreases, the strength of powder increases upto certain point, However, the speed of burning reduces when powder is made very fine, like dust, because all the spaces between the grains are filled up.

In the light of above two statements, choose the correct option

Correct Answer: A. Both (A) and (R) are true and (R) is the correct explanation of (A)

72. Given below are two statements-one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Eyeballs become flaccid after death.

Reason (R): There is fall of intraocular pressure from approx. 20 mm Hg to 12 mm Hg within one hour after death.

In the light of the above two statements, choose the correct option:

Correct Answer: A. Both (A) and (R) are true and (R) is the correct explanation of (A)

73. Given below are two statements-one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Forensic examination of paint require matching of layers of paint chip.

Reason (R): Number of layers, sequence of layer and colour of each layer is matched for positive identification.
In light of the above two statements, choose the correct option

Correct Answer: A. Both (A) and (R) are true and (R) is the correct explanation of (A)

74. Given below are two statements-one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Injury penetrating the dermal layer, through dermal papillae, would result in ridges not being regenerated.

Reason (R): Injury penetrating to epidermal layer, would repair themselves as they were prior to injury.

In the light of the above two statements, choose the correct option.

Correct Answer: B. Both (A) and (R) are true and (R) is not the correct explanation of (A)

75. Given below are two statements-one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): For carbon tetrachloride molecule, Raman Shifts are identical if excitation is carried out with an argon-ion laser or helium-neon laser.

Reason (R): Magnitude of Raman Shift is independent of the wavelength of excitation.
In the light of the above two statements choose the correct option:

Correct Answer: A. Both (A) and (R) are true and (R) is the correct explanation of (A)

76. Given below are two statementsone is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): No burning, blackening or tattooing phenomenon may be observed around the entrance hole in close contact gunshot wound.

Reason (R): The entire ejecta, like projectiles, smoke, semi-and unburnt particles, and hot gases enter into the target.

In light of above two statements, choose the correct option:

Correct Answer: A. Both (A) and (R) are true and (R) is the correct explanation of (A)

77. Given below are two statements-one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Enzymatic digestion technique is used to extract diatoms from body tissues.

Reason (R): Diatoms have an extracelluar coat composed of magnesium.

In light of the above two statements, choose the correct option:

Correct Answer: C. (A) is true, but (R) is false

78. Given below are two statements-one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): The standard ballistics data from the standard firearm- ammunition combination have no relevance vis-a-vis country made firearms.

Reason (R): Therefore, if the range of fire etc, have to be ascertained in a case involving country-made firearm, they must be based upon exhaustive tests with the suspected firearm and ammunition of the same make and batch, if possible, to the one used in the crime.

In the light of the above statements, choose the correct option:

Correct Answer: A. Both (A) and (R) are true and (R) is the correct explanation of (A)

79. Which of the following is the correct sequence of examination of an unknown blood stain?

Correct Answer: C. Kastle-Mayer test, Teich mann test, Oakley-Fulthorpe method, mixed agglutination test

80. Which of the following processes are correct in the order of their occurance during automization in atomic absorption spectrometry?

Correct Answer: A. Nebulization, Solvent evaporation, Volatilization, Dissociation