Mh-SET_Previous Year Question Paper_December-2020_(Part-2)

For MH-SET December 2020 part-1(Q1-Q50) CLICK HERE

In this part questions available from Q.51-100 of forensic science section.

 

 

51. Which of the following is not depicting antigen-antibody reaction ?

1. Neutralization
2. Elisa
3. Precipitation
4. Agglutination

Answer-2

Explanation

Agglutination:- The interaction between antibody and a particulate antigen results in visible clumping called agglutination.

Precipitation:- A type of antigen-antibody reaction, in which the antigen occurs in a soluble form. When a soluble antigen reacts with its specific antibody, at an optimum temperature and PH in the presence of electrolyte antigen-antibody complex forms insoluble precipitate. This reaction is called a precipitation reaction.

Complement Fixation:- Complement fixation is a method that demonstrates antibody presence in patient serum.  

Enzyme linked Immunosorbent Assay (ELISA)

RadioImmuno Assay

Western Blotting

52. In forensic examination of samples, STR are selected which are :

1. Genetically linked
2. Genetically not linked
3. Larger in size
4. Smaller in size

Answer-2

Explanation

Also known as microsatellites or simple sequence repeats, are short tandem repeated DNA sequences that involve a repetitive unit of 1-6 bp, forming series with lengths of up to 100 nucleotides (nt).

Used to compare allele repeats at specific loci in DNA between two or more samples.

This method differs from Restriction Fragment Length Polymorphism (RFLP) since STR analysis doesn’t cut the DNA with restriction enzymes.

Instead, Polymerase Chain Reaction (PCR) is employed to discover the lengths of the STR’s based on the length of the PCR product.

53. The minimum value of area under a receiver operating curve(ROC) of a biometric system is :

1. 0.2
2. 0.3
3. 0.5
4. 0.4

Answer-3

54. Salivary amylase converts :

1. Starch into glucose
2. Starch into glycogen
3. Starch into fats
4. Starch into carbohydrates

Answer-1

55. The most suitable reagent for chemical etching of steel surfaces in cases of restoration of erased number is :

1. Fry’s reagent
2. Villella’s reagent
3. Thomas’s reagent
4. William’s reagent

Answer-1

56. The pitch pattern in a sentence is known as :

1. Fundamental frequency
2. Intonation
3. Timbre
4. Phonology

Answer-2

Explanation

—  Intonation- Variation in the pitch level of the voice, but in such cases, stress and rhythm are also involved. It conveys differences of expressive meaning (e.g., surprise, anger, wariness).

—  Timbre:- also called timber, tone color or tone quality. Quality of auditory sensations produced by the tone of a sound wave. Timbre of a sound depends on its wave form, which varies with the number of overtones, or harmonics, that are present, their frequencies, and their relative intensities.

—  Fundamental frequency:- the lowest frequency which is produced by the oscillation of the whole of an object, as distinct from the harmonics of higher frequency.

—  Phonology:- branch of linguistics that deals with systems of sounds (including or excluding phonetics), within a language or between different languages.

57. Narrow band spectrogram is the most suitable to study which of the

following?

1. Harmonics
2. Formant
3. Glotal pulses
4. Amplitude

Answer-1

Explanation

Glottal pulse is a term used in the study of linguistics to describe the variances in voice quality affected by the manipulation of the folds of the vocal cords when speaking. The frequency produced in the glottal pulse results from the vibration of the vocal cords resonating against the larynx.

Amplitude of a sound is represented by the height of the wave. When there is a loud sound, the wave is high and the amplitude is large whereas smaller amplitude represents a softer sound.

A decibel is a scientific unit that measures the intensity of sounds.

58. Which of the following is correct ?

Mixed Guns are :

I. Double barrelled guns in which one barrel is of one bore and other is of different bore

II. Double barrel guns having different chokes in both the barrels

III. Double barrel have one smooth bore barrel and other is rifled barrel

1. I is correct
2. II is correct
3. I & III are correct
4. III is correct

Answer-3

59. Which of the following statements is correct ?

I. Forensic examiner encounter a wide range of weapons during the investigation

II. Most of these weapons falls in to one of the four major categories (Hand guns, shotgun, rifles and submachine guns)

1. Statement I is correct
2. Statement II is correct
3. Statements I and II are correct
4. Neither of statements I and II is correct

Answer-3

60. Which of the following is not an example of soft biometrics ?

1. Periocular region
2. Facial marks
3. Gait pattern
4. Tattoos

Answer-3

61. Casein is an example of :

1. Regenerated protein
2. Synthetic polymer
3. Mineral fiber
4. Vegetable fiber

Answer-1

Explanation

—  Regenerated protein also called azlons.

—  These are man-made fibres produced from either animal or vegetable non-fibrous proteins which have been reconfigured to take up a fibrous form to emulate the natural protein fibres wool or silk.

—  Regenerated protein fibers developed from casein (extracted from milk waste) using alkaline solutions and cross-linked with citric acid have good tensile properties and water stability but were cytotoxic.

—  The fibers were also stable in 90°C water between pH 3 and 9 but were hydrolysed at pH 11.

62. Which of the following is not a test for examination of semen ?

1. Barberios test
2. Ammonium molybdate test
3. Florence test
4. Schiff’s test

Answer-4

Explanation

 

63. Cardite is used in :

1. 0.303 firearm
2. 0.315 firearm
3. 12 Bore shotgun
4. 0.45 Revolver

Answer-1

Explanation

—  Cordite is smokeless propellants developed and produced in the United Kingdom since 1889.

—  It is classified as a low explosive due to its slow burning rates & low brisance(shattering capability of a high explosive, determined mainly by its detonation pressure).

—  Produce a subsonic deflagration wave rather than the supersonic detonation wave.

—  also used for large weapons, like tank guns, artillery & naval guns.

64. The shortest barrel firearm is :

1. Revolver
2. Pistol
3. Carbine
4. Machine Gun

Answer-2

65. Which of the following explosive is the lowest density ?

1. ANFO
2. Dynamite
3. PETN
4. RDX

Answer-1

66. Which of the following detonating device uses a primary explosive ?

1. Detonating card
2. Novel card
3. Exploding Bridgewire Detonators
4. Electric Blasting caps

Answer-4

67. Dynamite is manufactured with the help of :

1. Mercury fulminate
2. Nitroglycerine
3. Ammonia nitrate
4. Potassium nitrate

Answer-2

68. Recoil is not affected by :

1. The forward motion of the ejecta (Projectile, wads)
2. Outrushing gases
3. Muzzle blast
4. Breach face

Answer-4

69. Assertion : 0.22 inch lead air gun pellet requires a minimum of 500 ft/s velocity to penetrate fresh human skin.

Reason : The mass and diameter of lead air gun pellet is relatively less.

1. Both Assertion and Reason are true
2. Assertion is true but Reason is false
3. Assertion is false but Reason is true
4. Both Assertion and Reason are false

Answer-3

Explanation

—  Caliber 0.177 air gun pellets weighing 8.25 grains required a minimum velocity of 101 m/s (331 ft/s) to perforate skin.

—  Caliber 0.22 air gun pellets weighing 16.5 grains needed a minimum velocity of 75 m/s (245 ft/s)

—   Round nose, caliber 0.38 lead bullet weighing 113 grains perforated skin at 58 m/s (191 ft/s)

—  Lightweight projectiles need greater velocity to perforate skin in comparison to larger caliber having heavier bullets.

70. The sectional density of a bullet of mass 158 g and diameter 0.357 inch is :

1. 445 g/inch2
2. 56 g/inch2
3. 1239 g/inch2
4. 935 g/inch2

Answer-3

Explanation

71. In single digit classification of fingerprints, Battley lens is used, which has :

1. Five concentric circles
2. Three concentric circles
3. Six concentric circles
4. Seven concentric circles

Answer-4

72. The ultimate matching of two fingerprints as belonging to the same individual is based on :

1. Comparison of number of tri-radii and core type
2. Comparison of pattern types
3. Comparison of ridge counts
4. Comparison of minutiae or ridge characteristics

Answer-4

73. Which of the following sexual offences is also known as ‘Greek Love’ ?

1. Bestiality
2. Cunnilingus
3. Buggery
4. Lesbianism

Answer-3

Explanation

Bestiality:- sexual intercourse between a person and an animal.

Cunnilingus:- an oral sex act performed by a person on the vulva or vagina of another person.

Buggery:- anal intercourse and covers bestiality.

Lesbianism:- sexual attraction or sexual activity between women.

74. The absence of a cadaveric spasm in hand and the presence of country made weapon (Katta) at the crime scene is suggestive of :

1. Suicidal death
2. Natural death
3. Accidental death
4. Homicidal

Answer-4

75. The feature, which is missing in the signature produced by scanning and printing through colour printer is :

1. Presence of C.M.Y. dots in the vicinity
2. Pattern of paper from which signature is taken
3. Indentation on the back side of the paper
4. Microscopic texture on the stroke

Answer-3

76. Ridged skin on palms and soles is :

1. Found only in humans
2. Absent in apes
3. Absent in monkeys
4. Found in humans, apes as well as monkeys

Answer-4

77. Which of the following black-and white film is considered as slow

film ?

1. ISO 800/30–3200/36
2. ISO 400/27–500/28
3. ISO 100/21–200/24
4. ISO 25/15–50/80

Answer-4

Explanation

 ISO system is used to describe the relationship between exposure and output image lightness in digital cameras.

78. Among the following inkjet and laser printers fall in which of the categories ?

1. Impact printer
2. Line printers
3. Non-impact printers
4. Page printer

Answer-3

Explanation

79. Which of the following is considered individual characteristics of a

photocopy ?

1. Splash marks
2. Trash marks
3. Bleak marks
4. Crimp marks

Answer-2

80. Protection of life and personal liberty has been sanctioned to the citizen of India under which of the following Articles of the Constitution?

1. Article 19
2. Article 21
3. Article 20
4. Article 22

Answer-2

Explanation

Article 19:- Protection of certain rights regarding freedom of speech

Article 20:- Protection in respect of conviction for offences

(1) No person shall be convicted of any offence except for violation of the law in force at the time of the commission of the act charged as an offence, nor be subjected to a penalty greater than that which might have been inflicted under the law in force at the time of the commission of the offence

(2) No person shall be prosecuted and punished for the same offence more than once

(3) No person accused of any offence shall be compelled to be a witness against himself

Article 21:- Protection of life and personal liberty

Article 22:- Protection against arrest and detention in certain cases

81. The triradii, which are not actually present in a fingerprint but their potential formation is predicted (beyond the boundary of ridged skin) by the character of the pattern, are termed as :

1. Extralimital triradii
2. Conjoint triradii
3. Super triradii
4. Phantom triradii

Answer-1

82. Kromekote paper method is used in which of the following ?

1. Determining sequence of intersecting strokes
2. Deciphering indented writings
3. Deciphering erased writings
4. Deciphering secret writings

Answer-1

Explanation

—  Sequence determination is done in an attempt to determine which of two events occurred first in the preparation of a document. Also termed "sequence of intersections"

—  The intersection point may involve subtle deviations from the normal manner of deposition or production that can be observed on microscopic examination (e.g. extraneous ink deposits, skipping, misalignments, embossing, etc.)

1.     Binocular optical microscopy

2.     Scanning electron microscopy

3.     Atomic force microscopy

4.     Electrostatic detection device(EDD) method

5.     Lifting techniques

a.     Kromekote paper method

b.     Mikrosil casting method

83. CEDAR-FOX is an example of :

1. Systems for identification of firearms
2. Systems for handwriting identification
3. Systems for identification of animals
4. Systems for identification of hair

Answer-2

Explanation

—  It was first system for automatic comparison of handwriting for the purpose of forensic analysis.

—  Developed at CEDAR (Center of Excellence for Document Analysis and Recognition) at the University at Buffalo.

—  It has capabilities for interaction with the questioned document examiner to go through processing steps such as extracting regions of interest from a scanned document, determining lines and words of text, recognize textual elements.

—  The final goal is to compare two samples of writing to determine the log-likelihood ratio under the prosecution and defense hypotheses, also used to compare signature samples. 

84. By cross breeding sativa strain of cannabis with that of indica will lead to the development of....................... plant.

1. Sinsemilla
2. Skunk
3. Clone
4. Hop

Answer-2

Explanation

—  Hops are the flowers (also called seed cones or strobiles) of the hop plant Humulus lupulus, belongs  to Cannabaceae family. They are used primarily as a bittering, flavouring, and stability agent in beer, to which, in addition to bitterness, they impart floral, fruity, or citrus flavours and aromas.

—  Chemical composition

1.     Alpha acids:-  humulones

2.     Beta acids:- lupulones (aroma contributions to beer)

3.     Essential oils are terpene hydrocarbons consisting of myrcene(for pungent smell), humulene(& its oxidative reaction products may give beer its prominent hop aroma) & caryophyllene. Together, all 3 represent 80 to 90% of the total hops essential oil

4.     Flavonoids:- Xanthohumol is the principal flavonoid in hops.

—  Sinsemilla:- highly potent marijuana from female plants that are specially tended and kept seedless by preventing pollination in order to induce a high resin content

Cannabis sativa	Cannabis indica
Light green leaves	Dark green leaves
Stimulating	Relaxing
High CBD (cannabidiol ) content	High THC (Tetrahydrocannabinol) content
psychoactive properties	stimulant in small and monitored doses

85. To raise the yield of gasoline from crude oil by spliting higher molecular weight constituents into lower molecular weight is obtained by a process known as :

1. Polymerization
2. Alkylation
3. Cracking
4. Isomerization

Answer-3

86. Match the following :

List I	List II
(a) Cardiac (b) Stimulant (c) Hallucinogen (d) Depressant	(i) Cannabis sativa (ii) Digitalis purpurea (iii) Papaver somniferum (iv) Nicotiana tabacum

Codes :

   (a) (b) (c) (d)

1. (i) (ii) (iii) (iv)
2. (iii) (i) (ii) (iv)
3. (ii) (iv) (i) (iii)
4. (iv) (iii) (ii) (i)

Answer-3

87. Which of the following is not considered as a date rape drug ?

1. GHB
2. Ketamine
3. Nicotine
4. Flunitrazepam

Answer-3

Explanation

Date rape drugs

1.     Flunitrazepam (Rohypnol)

2.     Gamma-hydroxybutyric acid (GHB)

3.     gamma-butyrolactone (GBL

4.     Ketamine

88. Match the following :

List I	List II
(a) Alethrin (b) Chlorthion (c) Aldicarb (d) Endrin	(i) Organochlorines (ii) Pyrethrin (iii) Organophosphorus (iv) Carbamate

Codes :

  (a) (b) (c) (d)

1. (i) (ii) (iii) (iv)
2. (i) (iii) (ii) (iv)
3. (ii) (iii) (iv) (i)
4. (iii) (iv) (i) (ii)

Answer-3

89. Kerosene smell is detected in which of the following poisons ?

1. Arsenic
2. Organophosphorus
3. Cannabis
4. Cyanide

Answer-2

90. National Poison Information Centre (NPIC) was started in All India

Institute of Medical Science (AIIMS), New Delhi in which of the

following year ?

1. 1998
2. 1990
3. 1995
4. 1993

Answer-3

Explanation

—  The National Poisons Information Centre (NPIC) was established in February 1995 in the Department of Pharmacology, All India Institute of  Medical Sciences (AIIMS), New Delhi.

—  The Centre provides round the clock  information on management of poisonings to Health Care Professionals and general public.

91. A suspect  is caught 30 days after he committed a murder under the

influence of drugs. Analysis of which matrix of suspect is most likely to

identify the drug :

1. Blood
2. Hair
3. Sweat
4. Saliva

Answer-2

92. Condition when the temperature of body increases after death is known as :

1. Postmortem Caloricity
2. Postmortem Lividity
3. Postmortem Rigidity
4. Algor mortis

Answer-1

93. Which test is most commonly used spot test for amphetamine ?

1. Duquenois Levine
2. Mandelins
3. Ehrlich
4. Scott’s

Answer-2

Explanation

Modified Duquenois labine test

•      Take 1ml sample, add 1ml Vaneline reagent ( 2g vaneline+2.5ml acetaldehyde solution in 100ml of 95% alcohol), stir it for 1 minute.

•      Add 1ml conc. HCL to it, then add 3ml Chloroform and stir.

•      Purple colour in chloroform layer is seen.

Mandelins test:-

—  Also known as Strychine test.

—  1% solution of ammonium vanade in conc. Sulphuric acid.

—  Violet or purple colour indicates Strychine's presence.

Ehrlich test:-

—  Used to test for indoles and urobilinogen. 

—  Also used as a spot test to detect the presence of tryptamines (e.g., DMT) and ergoloids (e.g., LSD).

—  Also known as the Ehrlich aldehyde test.

—  It is named after Nobel Prize winner Paul Ehrlich, who used it to distinguish typhoid from simple diarrhea.

—  Ehrlich Reagent:-  0.5 to 2.0 g of p–dimethylaminobenzaldehyde (DMAB) in 50 mL of 95% ethanol and 50 mL of conc. HCL

Scott’s test:-

—  Presumptive test for cocaine.

—  Scott's reagent + conc. HCL + chloroform

—  A positive test is indicated by a blue colour in the chloroform layer.

—  Scott's reagent:- 2% cobalt thiocyanate (Co(SCN)₂) + glycerine + water

94. ‘‘Collision Detection Multiple Access’’ and ‘‘Time Division Multiple Access’’ are the examples of digital protocol used in :

1. PDA
2. Cell phones
3. CCTV
4. Workstation

Answer-2

Explanation

Difference between CSMA CA and CSMA CD

Time Division Multiple Access (TDMA) is a digital cellular telephone communication technology. It facilitates many users to share the same frequency without interference. Its technology divides a signal into different timeslots, and increases the data carrying capacity. used in digital mobile radio systems.

Frequency Division Multiple Access (FDMA) is one of the most common analogue multiple access methods. The frequency band is divided into channels of equal bandwidth so that each conversation is carried on a different frequency. It is often used in the first generation of analog mobile phone.

95. Specific guidelines for accreditation of forensic science laboratories has been mentioned in which of the following documents of NABL ?

1. NABL-112
2. NABL-113
3. NABL-120
4. NABL-121

Answer-2

96. Which of the following sample is the most suitable for the detection of diatoms in death due to drowning ?

1. Sternum
2. Liver
3. Lungs
4. Intestine

Answer-1

97. Which of the following is not a test to determine death of heart ?

1. Magnus test
2. Diaphanous test
3. Icard’s test
4. Winslow’s test

Answer-4

Explanation

Magnus test:- also k/a ligature test, fingers fail to show cogestion distal to a ligature applied at their base.

Diaphanous test:- also k/a trans-illumination test, when a strong source of light is held against hand with finger closed, failure  to show redess in webspace.

Icard’s test:- fluorescene with sodium bicarbonate) injected subcutaneously give yellow colour to body if circulation is present.

Winslow’s test:- no movement on surface of water in bowl, when it kept on chest.

98. When broad surface of skin slides against a rough surface it produces which of the following types of abrasion ?

1. Graze
2. Imprint
3. Pressure
4. Scratch

Answer-1

99. Which of the following is the first internal organ to putrefy ?

1. Heart
2. Kidney
3. Gall bladder
4. Larynx and trachea

Answer-4

100. Chronic poisoning of which of the following causes challucinations ?

1. Opium
2. Cannabis
3. Cocaine
4. Lysergic acid diethylamide

Answer-3

For MH-SET December 2020 part-1(Q1-Q50) CLICK HERE