RPSC Senior Scientific Officer Serology Part A Forensic Science Paper 2019
Total Questions – 100 Duration – Two hours
Part A – Forensic Science – 40 Questions
Which one of the following pair is NOT correctly matched?
(a) UV – Vis spcetroscopy – Quantity of material
(b) Fluorescene Spectroscopy – Light absorbance
(c) Raman Spectroscopy – Light Scattering
(d) Infra-red Spectroscopy – Vibrational spectroscopy
Degree of scattering in transmission electron microscope is a function of
(a) wavelength of electron beam used
(b) number of atoms that lie in the electron path
(c) number and mass of atoms that lie in the electron path
(d) mass of atoms that lie in the electron path
Differential staining is associated with study of morphological structure of
(a) Human sperm
(b) Human egg cell
(c) Plant cell
(d) Hair sample
Mass spectroscopy separates ions on the basis of which of the following
(a) Mass
(b) Charge
(c) Molecular weight
(d) Mass to charge ratio
Which one of the following is CORRECT?
(1) A secretor is an individual who secretes blood group antigens into body fluids such as saliva.
(2) A secretor is an individual who secretes blood group antigens into body fluids such as emen and sweat
(3) A secretor is an individual who secretes blood group antigens into body fluids such as saliva and semen.
(4) A secretor is an individual who secretes blood group antigens into body fluids such as saliva, sweat and semen.
(a) Only 1
(b) Only 2
(c) Only 3
(d) Only 4
Which one of the following is not correctly matched?
(a) Precipitation – Reaction between soluble antigens and antibodies
(b) Rouleaux formation – RBCs pile on each other to simulate false agglutination
(c) Agglutination – Reaction between antigen on RBCs cells and antibodies in serum
(d) Antiserum – On cathode side in cross-over electrophoresis technique
Which one of the following (chemicals/reagents) is generally used for the analysis of blood stains in a dark room?
(1) Benzidine and Luminol
(2) Phenolphthalein and Luminol
(3) Benzidine and Phenolphthalein
(4) Luminol
Select the correct answer using the codes given below –
(a) 2 only
(b) 1 and 2 only
(c) 1 and 3 only
(d) 4 only
Which one is not an example of polymorphic enzyme?
(a) GC
(b) AK
(c) EsD
(d) PGM
Which one of the following statement is CORRECT?
(a) Rh factor in blood is determined by A antigen
(b) Rh factor in blood is determined by B antigen
(c) Rh factor in blood is determined by D antigen
(d) Rh factor in blood is determined by AB antigen
Which one of the following are methods of blood grouping from dry stains?
(1) Absorption-elution
(2) Absorption-inhibition
(3) Mixed agglutination
Select the correct answer using the codes given below –
(a) 1,2 and 3
(b) 1 and 2
(c) 2 and 3
(d) 2 only
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