We have listed all the questions that were asked in the entrance exam for the 2020 MSc. Forensic Science, Delhi University along with answer key and explanation. This section listed solved questions from 1 to 25 with answers and explanations.
Please Note: You can also jump to various previous year’s question sections for MSc. Forensic Science, Delhi University Entrance Test (DUET).
Note: When preparing for Delhi University MSc. entrances, I strongly advise you to solve UGC NET Papers. Because it is seen that a good portion of the papers were from previous year’s UGC NET Forensic Science question papers. So, solve them to increase your chances of getting admission to Delhi University.
1. The branch of forensic science which uses insects as evidence is:‐
- Forensic Ballistics
- Forensic Chemistry
- DNA typing
- Forensic Entomology
Answer and Explanation
Answer: (4) Forensic Entomology
Explanation: Forensic entomology (the scientific study of the invasion of insects on dead bodies) to determine the estimated time of death (not the cause of death).
2. Forensic Odontology is a branch of forensic science which deals with
- Insects
- Bite marks and Teeth
- Bone study
- Fingerprints
Answer and Explanation
Answer: (2) Bite marks and Teeth
Explanation: No explanation is needed for this question from the 2020 DUET (Delhi University Entrance Test) Forensic Science.
3. “Every contact leaves a trace” a basic principle of forensic science, was given by
- Joseph Bell
- Raymond Locard
- Edmond Locard
- Mathieu orfila
Answer and Explanation
Answer: (3) Edmond Locard
Explanation: Two most important contributions by Dr. Edmond Locard are:
-> Poroscopy is the identification of a person by the means of comparison of the impressions of sweat pores, which was discovered and developed by Edmond Locard in 1912.
-> Law of exchange: “Every contact leaves a trace”
4. Trisomy 18 is a chromosomal abnormality causing
- Down syndrome
- Patau syndrome
- Edwards syndrome
- Jacob syndrome
Answer and Explanation
Answer: (3) Edwards syndrome
Explanation: When one of the homologous chromosomes is duplicated, it results in three copies of a particular chromosome. This condition is known as trisomy. Common duplication is seen in:
-> Chromosome 18 trisomy: Edwards syndrome, characterized by having 3 copies of chromosome 18 instead of the usual 2 copies.
-> Chromosome 21: Down’s syndrome
-> Trisomy 13: Patau syndrome
-> Trisomy 9
-> Trisomy 8: Warkany syndrome
-> Sex Chromosome Trisomy of X chromosome: XXX (Triple X syndrome), XXY (Klinefelter syndrome), and XYY
-> Trismony 16: Most common, lethal, autosomal trisomies, and a common cause of abortion.
5. Milk teeth in humans have the formula
- 2.1.0.2
- 2.0.1.2
- 2.1.2.0
- 2.0.2.1
Answer and Explanation
Answer: (1) 2.1.0.2
Explanation: Dentition formula for:
-> Deciduous (Primary Teeth): 2102/2102
-> Permanent Teeth: 2123/2123
First digit for incisors followed by canine then premolars, and lastly molars. (ICPM)
6. FTIR stands for
- Fourier Transform IR spectroscopy
- Fourier Transmittance IR spectroscopy
- Former Transform IR spectroscopy
- Fourier Transmission IR spectroscopy
Answer and Explanation
Answer: (1) Fourier Transform IR spectroscopy
Explanation: No explanation is needed
7. The scientist who gave chromatography concept was
- Berzelius
- Lavosier
- Tswett
- Avogadro
Answer and Explanation
Answer: (3) Tswett
Explanation: -> Mikhail Tswett was a Russian and his published work is in the Russian language.
-> He is also known as the father of chromatography.
-> He invented column chromatography in 1906.
8. Beer‐Lambert’s law gives a linear correlation with positive gradient between
- Absorbance and concentration
- Absorbance and wavelength
- Molar extinction coefficient and absorbance
- Molar extinction coefficient and concentration
Answer and Explanation
Answer: (1) Absorbance and concentration
Explanation: According to Beer-Lambert’s law, the amount of energy absorbed is directly proportional to the solution’s molar absorptivity and the concentration of solute. So, a solution with a higher concentration absorbs more light or vice versa.
9. Nanogram measurement factor is
- 10-3
- 10-9
- 10-12
- 10-10
Answer and Explanation
Answer: (2) 10-9
Explanation: Various useful conversions:
-> 1 micrograms [µg] = 10-6 grams [g]
-> 1 nanogram [ng] = 10-9 grams [g]
-> 1 picogram [pg] = 10-12 grams [g]
-> 1 femtogram [fg] = 10-15 grams [g]
-> 1 atto gram [ag]= 10-18 grams [g]
-> 1 zepto gram [zg] = 10-21 grams [g]
-> 1 yocto gram [yg]= 10-24 grams [g]
10. The term “Inborn errors of metabolism” was coined by
- Charles Darwin
- Francis Galton
- Alfred Russell Wallace
- A.E. Garrod
Answer and Explanation
Answer: (4) A.E. Garrod
Explanation:
-> Inborn errors of metabolism: rare genetic (inherited) disorders in which the body cannot properly turn food into energy.
-> This can be diagnosed by metabolic studies and nucleic acid analysis from tissues of the liver, kidney, cardiac and skeletal muscles, and peripheral nerve.
-> Tissues should be frozen in liquid nitrogen or dry ice and stored at –70°C.
11. What is the likelihood that a parent with type ‘AB’ blood would have a child with type ‘O’ blood?
- 50%
- 25%
- Cannot be determined without knowing the blood type of the other parent
- 0%
Answer and Explanation
Answer: (4) 0%
Explanation: Check all of the paternity and possible grouping table: [Table] Blood Group (ABO & MN) in Disputed Paternity & Maternity
12. The full name of N.M.R. is
- Nuclear Magnetic Resolution
- Nuclear Magnetic Remittance
- Nuclear Magnetic Resonance
- Nuclear Magnetic Resistance
Answer and Explanation
Answer: (3) Nuclear Magnetic Resonance
Explanation: No explanation is needed for this question from the 2020 DUET (Delhi University Entrance Test) Forensic Science.
13. The study of hair is known as
- Toxicology
- Trichology
- Traumatology
- Thanatology
Answer and Explanation
Answer: (2) Trichology
Explanation: -> Scientific study of hair and its diseases is called trichology.
-> Trichology is not just the study of hair but also the scalp.
14. Electrophoresis is mainly used for
- Differentiating the biological sample
- Performing the human specific presumptive tests
- DNA isolation from biological material
- Separation of the molecules
Answer and Explanation
Answer: (4) Separation of the molecules
Explanation: Electrophoresis is based on the migration of charged particles to the respective ends.
15. Illegal way of trafficking animals is known as
- Kidnapping
- Poaching
- Harbouring
- Smuggling
Answer and Explanation
Answer: (2) Poaching
Explanation: Why some animals are poached for:
-> Tiger: skin and bones (bones used for making tiger bone wine)
-> Elephant: ivory
-> Rhino: horn
-> Some sections of the Indian Wildlife (Protection) Act, 1972 (WLPA):
-> Section 9: No person shall hunt any wild animal specified in Schedules I, II, III, and IV except as provided under section 11 and section 12
-> Section 57: person liable if in possession, custody, or control of any captive animal, animal article, meat.
-> Section 51: Punishable with imprisonment for a term, not less than 3 years and fine less than 8 thousand rupees.
16. For examination of diatoms, samples should be collected from
- Bone marrow
- Blood
- Tissue
- Epithelial cells
Answer and Explanation
Answer: (1) Bone marrow
Explanation: Collection of Diatoms:
-> Bone Marrow From Long Bones: particular Sternum and Femur
-> Soft tissues including the lungs and liver (not common): 1x 1 cm or 100 grams.
References: Forensic Analysis of Diatoms in Drowning: Extraction and Procedure
17. The presumptive test for semen is
- Acid Phosphatase test
- Sodium alpha naphthyl test
- Napthanil diazo test
- Barbiturate test
Answer and Explanation
Answer: (1) Acid Phosphatase test
Explanation:
-> Extracted seminal stain + solution of monophenolic phosphoric acid (or its ester) in an acetate buffer of pH 5.
-> Mechanism: The acid phosphatase enzyme in seminal fluid gets hydrolyzed to corresponding phenol and phosphate ions. Phenol then reacts with a diazonium salt to give a characteristic dye color (usually purple color will appear).
-> Check MCQs with false positive, various color changes in acid phosphatase test mcq: Seminal Fluid Part 4: Forensic Serology Ex 2.4
18. Restriction enzymes are used in one of these techniques
- Sequencing
- Genotyping
- RFLP
- Polymerization
Answer and Explanation
Answer: (3) RFLP
Explanation: Restriction enzymes used in the RFLP technique helps to Cut DNA at specific sites.
-> RFLP (Restriction Fragment Length Polymorphism) analysis determines
● Power of discrimination (Pd)
● Variation in the length of a defined fragment of DNA
● Hundreds of variations at each locus
19. The Bureau of Police Research and Development is situated in
- New Delhi
- Lucknow
- Chandigarh
- Mumbai
Answer and Explanation
Answer: (1) New Delhi
Explanation: Bureau of Police Research and Development (BPR&D) was established in New Delhi on July 28, 1970, under the Ministry of Home Affairs. (Source)
20. The control soil sample should be collected within the distance of _____ of the questioned soil region
- 1 Inch
- 3 – 4 Inches
- 8 Inches
- 1 feet
Answer and Explanation
Answer: (2) 3 – 4 Inches
Explanation: The standard value to collect the control soil sample is 3 to 4 inches to the questioned soil sample.
21. Which of the following would be considered individual specific evidence?
- Paint
- Soil
- Blood
- DNA
Answer and Explanation
Answer: (4) DNA
Explanation: No explanation is needed for this question from the 2020 DUET (Delhi University Entrance Test) Forensic Science.
22. The sex of an individual can be determined by the following, except
- X‐Y chromosome
- Barr‐bodies
- Protein pattern
- Testosterone/Estradiol ratio
Answer and Explanation
Answer: (3) Protein pattern
Explanation: Question (Q17) appeared in 2013 December Solved Forensic Science Paper 3 UGC NET NTA/JRF Question Paper.
23. Two arms composed mainly of DNA and held together by centromere is a
- Chromosome
- Protein
- Cell
- Gene
Answer and Explanation
Answer: (1) Chromosome
24. Structure of DNA, carrier of the genetic blueprint of all biological organisms, was reported by
- Alec Jeffreys
- H.J. Muller
- Crick and Watson
- E.M. Southern
Answer and Explanation
Answer: (3) Crick and Watson
Explanation: Repeated question (Q23) from 2013 December Solved Forensic Science Paper 3 UGC NET NTA/JRF Question Paper.
25. Ethanol is absorbed into blood from
- Stomach and small intestine
- Liver and large intestine
- Stomach and large intestine
- Kidney and liver
Answer and Explanation
Answer: (1) Stomach and small intestine
Explanation: Repeated question (Q28) from 2013 December Solved Forensic Science Paper 3 UGC NET NTA/JRF Question Paper.
Jump to Solved Previous Year Delhi University Entrance Test For MSc. Forensic Science