Foresic chemistry

100問 • 2年前

問題一覧

Which of the following is a genderless act which involves unconventional sexual acts of violence and aggression committed on the genital, oral or anal orifices of another person?

Sexual assault

What is the study that deals with the application of the chemistry to criminal investigation which focuses on the analysis of substances connected to crime investigation?

Forensic Chemistry

What is the possible result when a test is applied to determine the presence of semen in the underwear of a rape victim?

Slender yellowish crystals

When hair is present in the crime scene, investigators can determine the identity of the criminal by evaluating hair structure and DNA from cells attached to what PART of the hair?

Root

What is a METHOD in determining the identity of soil sample collected from crime scene and soil found in the shoes of the suspect to separate the soil from other materials?

Density Gradient

When a rape case is being investigated, investigators know that SOMETHING IS LEFT in the crime scene, presence of semen is possible, what test can be applied to determine the presence?

Acid-phosphatase

Which of the following METHODS in hair analysis is NOT included?

Benzidine

Which of the following TEST is applied when forensic experts want to determine if the blood being examined is of human or non-human?

Precipitin

In order to determine the racial origin of the suspect hair strands left in the crime scene after microscopic and physical examinations, why is it that the forensic experts are positive that the suspect is a black man or negro?

Tightly coiled medulla and contains heavy pigment

In order to identify burned victims, what is the TEST is available that can be performed by the examiners?

Forensic odontology

is defined as any impression, cut, scratch, or abrasion, or any other marking left on an object by another harder object or instrument.

Tool mark

is made when a tool is pressed against or into a receiving surface. It is usually made when a crowbar is used to pry open a door or window

Negative impression

How long does alcohol last in blood?

up to 12 hours

A scientific study of poisons, their nature, properties, effects, and detections and the treatment in case of poisoning.

Toxicology

Any agent that neutralizes a poison or otherwise counteracts or opposes its effects.

Antidote

One which by contact with it chemically produces local destruction of tissues

Corrosive Poison

This poison through direct contact inflames the mucous membrane or the parts. It causes nausea, vomiting, pain and diarrhea.

Irritants

A type of dose that does not cause harmful effects.

Safe dose

It is a type of attacked numbers that is pressed intendedly using electrical or mechanical gadget.

Engraved number

Intaking of plenty of water before collection of urine specimen or drinking herbal tea etc.

Internal Dilution

A drug which induces sleep or stupor and relieve pain.

Narcotics

Are artificially produced substance, synthesized in the laboratory for the illicit market.

Synthetic drugs

A type of drug that reduces appetite, relieves mental depression, comfort fatigue and sleepiness.

Amphetamine

An agent that counter the reactions made by the poisons through distillation, solvent extraction, and chromatography.

Physiological antidote

It is one categories of bloodstain which is characterized through drops created or formed by the force of gravity acting alone.

Passive bloodstain

A poison that can be detected through qualitative methods of examination such as sulfates, sulphides, chlorine and alkaline.

Anion

Who stated that all substances are poison?

Paracelsus

It refers to exposure to poison and produces immediate or instant death.

Acute Poisoning

It is a favorite killer poison.

Arsenic

It refers to the process of reducing the desired substance in its pure form.

Isolation

It is the process of receiving the specimen by entering the specimen condition on the logbook.

Reception

The small remains of anything broken down or destroyed.

Debris

Are drops that have been put into fire flight through some mechanisms.

Spatter

Similar to impact spatter, but with a slight difference. The blood source is broken up in the mouth or system by air pressure.

Expotorate Pattern

This is created when a bloody object contacts another surface often with some form of lateral motion.

Smear

A crack in a glass that extends outward like the spoke of a wheel from the point at which the glass was struck.

Radial Fracture

A weak mark made by pressure that stays on the surface.

Imprint

a mark or sign left behind by something that has passed by.

Trace

It is created when a bloody object meets another surface and produce a pattern in which a recognizable characteristic of image or object is evident.

Pattern Transfer

an irregular pattern created when a large volume of blood is ejected.

Gush

It is a pattern of individual spatter stains deposited on the surface that demonstrate the movement of the dripping item from one point to another.

Drip trail

One of the oldest tests for the detection of creatinine.

Jaffe Test

Color of blood is cherry red due to ____.

Carbon Monoxide

What part of the hair can DNA be found?

Root

facility where analyses are performed on evidence performed by crime, they investigate physical, chemical, biological or digital evidence and often employ specialists especially in the conduct of crime scene investigation.

d. Both b and c

It is chemical substance that brings about physical, physiological, behavioral or psychological change in a person taking it.

Drug

A chemical substance used in the clandestine manufacturing processes

Essential chemicals

this is extremely sensitive to detonation by heat, shock, friction and impact and used primarily to start an explosion like blasting caps and primers.

Primary explosive

Paraffin test originated in ________.

Cuba

Kind of protein found in blood

Globin

How long the death of individual cells of the body start to occur?

Three to six hours

The act or practice of killing or bringing about the death of a person who suffers from incurable disease or condition. Also known as “mercy killing”

Euthanasia

The science and art of improving human breeds by so applying the ascertained principles of genetics and inheritance as to secure a desirable combination of physical characteristics and mental traits in the offspring of suitably mated parents?

Eugenics

The yellowish fluid of blood in which numerous blood corpuscles is called

Plasma

What test is used to determine whether blood is a human or non-human origin?

Precipitin test

Is a specialized epithelial outgrowth of the skin which occur everywhere on the human body except on the palm of the hands and the sole of the feet.

hair

What kind of fluid is used to restore tampered serial numbers?

Etching fluid

As regards the relation of the site of the application of force and location of injury, the injury found at site of the application of force is called

Coup injury

Wound characterized by products of forcible contact are called

Abrasion

All forms of violent death which results primarily from the interference with the process of respiration or to condition in which the supply of oxygen to the blood or tissue or both has been reduced below normal level are called

Death by asphyxia

When urine specimen is collected unobserved validity test is conducted. The following are instances when to allow unobserved urine specimen collection, EXCEPT;

When donor is already dead

As a Forensic Chemist, there a cases that will lead the expert into a path with which he is not familiar and when this happens he should seek advice from those who know better in the field of forensic chemistry. What golden rule best describe the statement?

Consult others

Which of the following dosage that does not cause any harmful effects to the body?

Safe dose

Which test is most applicable especially among drivers suspected to be under the influence of liquor that determines and detect alcohol intoxication?

Breath test

Seminal fluid or semen is an important evidence for the solution of sexual offenses. The following are examination for seminal fluid in the form of stains, except one;

Radioactive examination

Which of the following is NOT a characteristic of physical examination of a dried seminal stain found on clothing?

Presence of purple color indicative of phosphatase enzyme in semen

A forensic chemist conducts drug testing that involves application of analytical procedure in order to insure the reliability and accuracy of specimen, what TEST must be done?

Confirmatory test

Why law enforcers should know about explosives, EXCEPT?

For them to know the materials used in explosives to invent their own

The introduction of seminal fluid with spermatozoa in the generative of a woman by any means of springe, pipette, irrigator, etc is called

insemination

The physical incapacity of either sex to allow or grant to the other legitimate sexual gratification.

Impotency

It is the application of various sciences to answer questions relating to examination and comparison of biological evidence and scientific evidence.

Forensic Science

Which of the following serve as the fighting mechanism of the body against unwanted foreign microorganisms?

Leukocytes

Mikasa, a forensic chemist, done a thorough examination on the physical evidence and after the forensic chemist write a technical report and submitted to the assigned investigator. At what stage of work of forensic chemistry best describe the scenario?

Communication of results of examination

Natsu is the husband of Lucy. The former has a blood group of Type A while the latter has a blood group Type B. They have a child and found out that the child has blood Type O. In the situation, is the couple the biological parent of the child?

Yes, because it is possible for blood type A and B to have conceived a child with type O

Which of the following is NOT a must to comply in the proper collection and preservation of evidence such as body fluids?

All specimen must be packed in sealed plastic container

Naruto collected urine for drug testing, after collection he added plenty of water to the urine specimen. This action of tampering urine specimen is called-

External Dilution

There are instances wherein a person who actually discharged a firearm would still give negative result to the paraffin test because of the following factors, EXCEPT;

When 75 hours had already lapsed

In personal identification, there are two methods of identification: one is by comparison and the other is by ___

Exclusion

A forensic chemist is tasked to examine the chemical nature and composition of the following except one;

Fingerprints

For many years, the most commonly used preliminary test for blood is?

Benzidine test

The first test that a criminal investigator or criminalistics expert must be performed at the crime scene where the blood is found and believed to be necessary for the solution of the crime being investigated.

Preliminary test

To determine choline in human semen, what examination is used in the laboratory?

Florence test

In a scientific criminal investigation, the problem of reproducing the faithful of an object is of great evidential value. In many cases, this had solely relied on photography, but in cases where the image is made up of impressions, it is reproduced through-

Casting and molding

The physical incapacity of either sex to allow or grant the other legitimate sexual gratification.

Impotency

Which biological evidence offers the least resistance to decomposition?

Hair

In determining the entry points of bullets in glass fractures is based on the fact that its hole has this characteristic.

Rough surface

This part of the hair is the basis of the forensic examiner in determining whether a hair is of human or animal.

Roots

The changes or disturbance produced on distant parts away from the site of application of poison is in terms of actions is known as-

Remote actions

Which of the following kinds of poisoning wherein there are prompts and marked disturbance of function or death within a shorter period of time?

Acute poisoning

It indicates the presence of sulfur;

White smoke

An antidote which substance can soothe and protect the part which they are applied.

Demulcents

If poisoning is caused by a living organism that bites or stings, the special treatment applied is-

The poison can be checked from spreading through the body by applying a tourniquet or a restricting band tightly above the wound

Collection and preservation of firearm as evidence includes the following, except;

Dust the weapon for fingerprints

What is called the powder charge that is classified as smokeless powder, which is made only of pure nitroglycerine gelatinized with nitrocellulose?

Double-based smokeless powder

Priming mixture and gunpowder are used as propellants for firearms. Which of the following is not one of the components of a priming mixture?

Potassium chloride

This preliminary blood test will result to a blue color.

Guaiacum Test

An impression or cast made for use especially as evidence in a criminal investigation.

Moulage

In a robbery scene, the door knob was used by the suspect to enter the house, what test can you use in evidence found on the door knob?

DNA

Barberio test if positive will give what color?

Yellow

100

What part of the hair can DNA be found?

Root

Lea set A

Christian Jay Santos · 53問 · 3年前

Lea set A