This section listed the first 25 questions that were asked in the 2022 CUET PG entrance exam for MSc. Forensic Science with answer key and explanation.
Please Note: Jump to the previous year’s question (PYQs) sections for CUET PG Forensic Science and Delhi University Entrance Test (DUET).
You can download the first 25 questions that have questions from general knowledge and basic language. We have only listed and solved the Forensic Part of the CUET PG question paper. Here is the direct link to download the first 25 questions from here.
1. Sherlock Holmes was a character in the novels of which of the following authors?
- Sir Arthur Conan Doyle
- Agatha Christie
- Perry Mason
- Victor Hugo
Answer and Explanation
Answer: (1) Sir Arthur Conan Doyle
Explanation:
-> Many people today believe that Holmes’s creator, Sir Arthur Conan Doyle, had a considerable influence on popularizing scientific crime detection methods.
-> The first Sherlock Holmes novel, A study in Scarlet, was published in 1887.
2. Which technique is used for the examination of glass evidence?
- Glass microscopy
- Glass refractive index measurement
- Glass pyrolytic gas chromatography
- Glass electroanalytical measurement
Answer and Explanation
Answer: (2) Glass refractive index measurement
Explanation:
-> GRIM (Glass refractive index measurement) involves measuring the refraction of light as it passes through the glass.
-> The GRIM instrument provides several advantages, including high precision and accuracy in RI measurements.
3. While sketching a scene of occurrence, direction with the help of a compass should be found out and marked by an arrowhead. Usually, this arrow head indicates which of the following directions?
- North
- East
- West
- South
Answer and Explanation
Answer (1) North
Explanation: No explanations in needed for this question.
4. Match List-I with List-II
| List-I | List-II |
|---|---|
| (a) Anachronism | (i) Writing of similar period |
| (b) Contemporary writings | (ii) Not in alignment with time |
| (c) Anonymous writings | (iii) Origin of paper |
| (d) Watermarks | (iv) Author of writing is unknown |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (ii) | (iv) |
| 2. | (ii) | (i) | (iv) | (iii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iii) | (i) | (iv) | (ii) |
Answer and Explanation
Answer (2): (ii), (iii), (i), (iv)
Explanation:
-> An anachronism is something not in alignment with time
-> Contemporary writings are writings from a similar period
-> Anonymous writings are those where the author is unknown
-> Watermarks can help identify the origin of paper
5. Guided handwriting is also known as which of the following:
- Skilled writing
- Assisted writing
- Forged writing
- Simulated writing
Answer and Explanation
Answer: (4) Simulated writing
Explanation:
-> Simulated forgery: intimating the observation
-> Traced forgery: tracing the observation with the use of semi-transparent writing media such as butter paper or use of carbon paper or by other means,
-> Freehand forgery: by own style
6. Given below are two statements one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Any surface on which something is written in any form conveying some message
can be said as document.
Reason(R): Paper is the most common surface used to make a document.
In the light of the above statement choose the most appropriate answer from the option given below:
- Both (A) and (R) are true, and (R) is the correct explanation of (A).
- Both (A) and (R) are true but (R) is not the correct explanation of (A).
- (A) is true but (R) is false
- (A) is false but (R) is true
Answer and Explanation
Answer: (2) Both (A) and (R) are true but (R) is not the correct explanation of (A).
Explanation: The correct explanation could be a document can be created on various means such as on stones, walls, digitals, etc.“
7. Blobbing can be found in writing written with which of the following writing instrument
- Fountain pen
- Ballpoint pen
- Roller pen
- Sketch pen
Answer and Explanation
Answer: (2) Ballpoint pen
Explanation:
-> Blobbing of a ballpoint pen is called to be the “blotchy residue” that sticks to the edge of the ballpoint pen tips.
-> This accumulation is due to the thinning of the ball inks resulting from the friction of the pen against the paper.
-> When the person writes with that type of pen, a solid-thick ink globule forms which is usually on the initial strokes of the writing.
-> This blobbing of inks is also seen in the hands of the writer.
8. Match List-I with List-II
| List-I | List-II |
|---|---|
| (a) Micellar Electrokinetic Chromatography (MEKC) | (i) Example of planar chromatography |
| (b) Gas Chromatography (GC) | (ii) Use for separation of macromolecules |
| (c) High performance thin layer chromatography (HPTLC) | (iii) Example of electrophoresis |
| (d) Gel chromatogprahy | (iv) Best for volatile samples |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (iii) | (i) |
| 2. | (iv) | (i) | (ii) | (iii) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (ii) | (iv) | (i) | (iii) |
Answer and Explanation
Answer: (3) (iii), (iv), (i), (ii)
Explanation:
-> Micellar Electrokinetic Chromatography (MEKC) is an example of electrophoresis where separation of analytes is achieved using surfactant micelles.
-> Gas Chromatography (GC) is best for volatile samples as it uses a gas as the mobile phase.
-> High performance thin layer chromatography (HPTLC) is a form of planar chromatography, which utilizes a thin layer of stationary phase.
-> Gel electrophoresis (chromatography) is often used for the separation of macromolecules such as proteins in solution.
9. Casting kit is used for the identification and collection of
- Paint
- Firearms
- Footprint
- Blood
Answer and Explanation
Answer: (3) Footprint
Explanation: Among the option, footprints usually made a 3d impression on the mud or soil which is generally preserved and saved using casting.
10. Which instrument is coupled with SEM?
- Energy dispersive X-ray spectrometer
- Energy differentiate spectrometer
- Energy disserting spectrometer
- Elusion x-ray diffractometer
Answer and Explanation
Answer: (1) Energy Dispersive X-ray spectrometer
Explanation: SEM-EDX (scanning electron microscopy with energy-dispersive X-ray spectroscopy) is the widest among all the available scanning microscopy techniques.
11. Fire debris is packed in
- Glass Vial
- Metal Cans
- Plastic Bag
- Cardboard box
Answer and Explanation
Answer: (2) Metal cans
Explanation:
-> Unlined paint cans are commonly used to collect fire debris evidence.
-> These are specifically used for accelerant detection, which is crucial in fire investigations.
12. Which of the following is a synthetic fibre?
- Shahtoosh
- Nylon
- Mohair
- Angora
Answer and Explanation
Answer: (2) Nylon
Explanation:
-> First synthetic fiber is Nylon developed in 1939 by Wallace Carothers.
-> Shahtoosh, Mohair, and Angora are natural fibers, derived from animals.
-> Rayon is the first manufactured fiber (not fully synthetic fiber; can be called semi-synthetic) that is regenerated as cellulose fiber.
-> It was invented in 1846 and began to be manufactured in the United States in 1911.
13. For the examination of diatoms, samples should be collected preferably from
- Blood
- Bone marrow
- Hair
- Skin
Answer and Explanation
Answer: (2) Bone marrow
Explanation:
-> The most suitable way to test the diatoms using the sternum or breastbone marrow.
-> Presence of diatoms in bone marrow is a clear sign of antemortem drowning.
14. The alkaloids berberine and protopine are obtained from which of the following
- Lathyrus Sativus
- Amanita muscaria
- Argemone mexicano
- Stigmata maydis
Answer and Explanation
Answer: (3) Argemone mexicano
Explanation:
-> Lathyrus Sativus, also known as the grass pea, produces a neurotoxin called ODAP (β-N-oxalyl-L-α,β-diaminopropionic acid). It can cause a neurological disorder called lathyrism if consumed in large amounts over time.
-> Argemone mexicana, commonly known as Mexican Prickly Poppy, is a rich source of alkaloids like berberine and protopine.
-> Amanita muscaria, commonly known as the fly agaric, contains several psychoactive compounds, primarily muscimol and ibotenic acid. These are hallucinogenic and can be toxic.
-> Stigmata maydis, more commonly known as corn silk, doesn’t produce alkaloids in significant amounts. It is often used in traditional medicine for its anti-inflammatory, diuretic, and blood sugar-lowering properties.
-> Active Principle of Plant Toxins: Forensic Medicine and Toxicology [Table]
15. Birefringent materials can be visualized using
- Stereo zoom microscope
- Comparison microscope
- Fluorescence microscope
- Polarizing microscope
Answer and Explanation
Answer: (4) Polarizing microscope
Explanation: Read more mcqs from birefringent materials and fibers.
16. Which of the following light is used in the fluorescence microscope
- Visible light
- IR light
- UV light
- Near IR light
Answer and Explanation
Answer: (3) UV light
Explanation:
-> In fluorescence microscopy, the specimen is illuminated (excited) with light of a relatively short wavelength, usually blue or ultraviolet (UV).
-> The specimen is examined through a barrier filter that absorbs the short-wavelength light used for illumination and transmits the fluorescence, which is therefore seen as bright against a dark background
17. Sculpturing of the pollen refers to
- Opening of the Pollen
- Pattern on the pollen surface
- Arrangement of the apertures on the pollen
- Dispersal pattern of pollen
Answer and Explanation
Answer: (2) Pattern on the pollen surface
Explanation:
-> Apertures are the openings on pollen grains from which the pollen tube grows and carries the sperm to the egg to complete fertilization.
-> Sculpturing of the pollen refers to the pattern of the pollen grain’s outer (exine) surface.
18. Which of the following extraction methods is used for the extraction of diatoms from viscera?
- Solvent extraction
- Dry ashing
- Distillation
- Acid digestion
Answer and Explanation
Answer: (4) Acid digestion
Explanation:
-> Acid Digestion: a common method in extraction of diatoms from tissues such as viscera. The process involves strong acis to dissolve and digest organic tissue, leaving behind diatoms which are resistant to acid degradation.
-> Solvent Extraction: commonly used to extract drugs, toxins from biological samples.
-> Dry Ashing: involves heating the sample at high temperatures to ash it.
-> Distillation: technique to separate mixtures based on differences in their volatilities in a boiling liquid mixture.
19. Coomassie Blue dye is used for the staining of:
- DNA
- Protein
- RNA
- Carbohydrates
Answer and Explanation
Answer: (2) Protein
Explanation:
-> Coomassie Blue is a dye commonly used for staining proteins in gel electrophoresis assays, such as SDS-PAGE.
-> When the gel is treated with Coomassie Blue, the dye binds to the protein bands, allowing them to be visualized and analyzed.
20. Identify the universal detector in Gas chromatograph
- FID
- NPD
- ECD
- TCD
Answer and Explanation
Answer: (4) TCD
Explanation:
-> Originally called as Katharometer, Thermal Conductivity Detector (TCD) was one of the first detectors used in GC.
-> It was considered as a universal detector capable of detecting any compound other than carrier gas.
-> TCD is based on a change in electrical resistance as a gas is passed across a heated filament.
-> In other words, it can detect any compound that has a thermal conductivity different from that of the carrier gas (usually helium or hydrogen).
-> Flame Ionization Detector (FID): very sensitive to organic compounds, mainly hydrocarbons.
-> Nitrogen-Phosphorus Detector (NPD): for detection of nitrogen and phosphorus containing compounds in samples such as pesticides, herbicides, and drugs.
-> Electron Capture Detector (ECD): highly sensitive to halogenated compounds.
21. Lindlar’s catalyst is used for the reduction of:
- Alkynes to alkenes
- Alkene to alkane
- Alkane to alcohol
- Aldehyde to carboxylic acid
Answer and Explanation
Answer: (1) Alkynes to alkenes
Explanation:
-> Lindlar’s catalyst is a heterogeneous catalyst consisting of palladium on calcium carbonate catalyst that is poisoned with lead acetate and quinoline.
-> It is used to selectively hydrogenate alkynes to alkenes.
-> It is named after its inventor Herbert Lindlar.
22. Which instrumental technique is best suited for the determination of metallic poison?
- GC
- AAS
- Distillation
- Solvent extraction
Answer and Explanation
Answer: (2) AAS
Explanation:
-> Atomic Absorption Spectroscopy (AAS): effective for detecting and quantifying metals and metalloids in various samples.
-> Majorly in metallic poisons such as ead, mercury, arsenic, and others in biological samples.
-> Gas Chromatography (GC): primarily used for separating and analyzing compounds that can be vaporized without decomposition such as most organic compounds.
-> Solvent Extraction: used for extracting substances from a mixture into a solvent.
23. The hybridization of the S atom in SO₂ will be?
- sp
- sp2
- sp3
- sp4
Answer and Explanation
Answer: (2) sp2
Explanation:
-> In SO₂, the sulfur atom forms two double bonds with two oxygen atoms.
-> The presence of two double bonds and one lone pair on the sulfur atom leads to sp² hybridization.
24. Acrodynia is seen in the poisoning of
- Mercury
- Phenol
- Lead
- Arsenic
Answer and Explanation
Answer: (1) Mercury
Explanation: Acrodynia is also called pink disease, primarily associated with chronic mercury poisoning in which pink discoloration of limbs is seen more commonly in children.
25. Nature of sea snake venom is
- Haemotoxin
- Neurotoxin
- Mycotoxin
- Myotoxin
Answer and Explanation
Answer: (2) Neurotoxin
Explanation:
-> Snake venoms are usually classified as hemotoxic or neurotoxic.
-> Snakes of the Viperidae (vipers and rattlesnakes) family have venoms containing proteins that can disrupt the coagulation cascade, the hemostatic system, and tissue integrity.
-> In contrast, neurotoxic venoms, which are typical of the Elapidae snakes (mambas, cobras, and corals), contain a number of toxins that primarily affect the peripheral nervous system, in particular the neuromuscular junction.
Reference: Snake Venoms [ScienceDirect]
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