quiz chap7

Question 1

The powder that is used in ammunition in the propulsion of projectile

Answer 1

Gunpowder

Question 2

Gunpowder in the 19th Century was known as

Answer 2

black powder

Question 2

Considered the oldest propellant

Answer 2

Black powder

Question 2

It is a mixture of sulfur, charcoal, and potassium nitrate (saltpeter) - with the sulfur and charcoal acting asfuels, while the saltpeter works as an oxidizer

Answer 2

Blackpowder

Question 3

developed smokeless gunpowder and he called it Ballistite, a double-base propellant

Answer 3

Alfred E. Nobel

Question 4

the unrecognized inventor of gunpowder

Answer 4

Wu Ching Tsun

Question 4

an English monk and scientist, credited with the invention of gunpowder(black powder).

Answer 4

Roger Bacon

Question 4

A German monk was credited for the application of gunpowder for propelling missile

Answer 4

Constantine Anklitzen

Question 5

invented smokeless gunpowder with nitrocellulose, a single-base propellant which was called Poudre B (composition of ether and alcohol)

Answer 5

Pual Vielle

Question 6

obtained a patent of modifying smokeless gunpowder, they
called it Cordite

Answer 6

federick abel & james dewar

Question 7

produces small amount of smoke

Answer 7

smokeless powder

Question 8

consists of jet black and shiny grains

Answer 8

black powder

Question 9

is the principal ingredient of smokeless powder, invented in 1846

Answer 9

guncotton

Question 10

The 1st examination and detection of GSR was done

Answer 10

1911

Question 11

was the 1st to use Paraffin Wax to collect GSR, from then, it was popularly called today as Paraffin test

Answer 11

Dr. Iturriuz (1914)

Question 12

In 1933, he made a demonstrated the use of paraffin cast in Criminal Identification Laboratory of Mexico, USA which was called

Answer 12

Dermal Nitrates Test, Diphenylamine Test and Gonzales
Test

Question 12

performed a modified version of the Iturriuz Test using molten paraffin wax on the hands of firer.

Answer 12

Theodoro Gonzales (1931)

Question 12

Positive result of Paraffin test.

Answer 12

blue color or blue specks

Question 13

most common

Answer 13

hand

Question 14

as stated by Edmond Locard, when two objects come into contact, exchange take place.

Answer 14

Locard’s Principle

Question 15

with the use of cotton with 5% Nitric Acid Solution, particles maybe collected

Answer 15

cotton swabs

Question 15

used for Scanning Electron Microscope (SEM) analysis

Answer 15

adhesive stubs

Question 16

refers to the gunpowder residues that exits on all openings of a FA after discharge

Answer 16

plumes

Question 17

the most important consideration in dealing with GSR evidence

Answer 17

time factor

Question 18

The standard Time Frame from the time of shooting BUT in some cases, it may persist much longer is?

Answer 18

3-6 hours

Question 19

The Traditional belief to remove GSR on hands is by application of

Answer 19

vinegar

Question 19

the most efficient method employed in the analysis of GSR, computerized

Answer 19

ICP-MSP (inductively coupled plasma-mass spectroscopy plasma)

Question 20

detects the presence of nitrates and nitrites

Answer 20

Diphenylamine test

Question 20

used in the analysis of inorganic materials in primer residue such as Ba and Sb

Answer 20

GFAAS (Gra[hite furnace atomic absorption spectroscopy)

Question 21

detects presence of Lead Styhpnate (pb)

Answer 21

Sodium Rhodizonate Test

Question 22

detects presence of nitrates in unburned or partially burned gunpowder, this is also used by the investigator to detect the Range.

Answer 22

Walker test

Question 23

both detect nitrites, same with Greiss test

Answer 23

Marshall and Tiwari test

Question 23

detects Nitrites

Answer 23

Greiss Test

Question 24

are normally employed as propellants for guns. Undergo deflagration from a few centimeters per second to approx 400M per second.

Answer 24

low explosives

Question 24

the chemical used to indicate the presence of nitrocellulose

Answer 24

lunge reagent

Question 24

Unlawful Manufacture, Sale, Acquisition, Disposition or Possession of Explosives

Answer 24

RA 8294, Sec 3

Question 25

also known as double-base powder. Undergo detonation from 914 to 9140 meters per second.

Answer 25

high explosives

Question 26

extremely sensitive to chemical shock, friction and heat such as Fulminate Mercury, Lead Styphnate & Lead Azide.

Answer 26

primary explosive

Question 27

insensitive to shock, friction and heat because there is a need to expose them to heat or flame to boost their power, like Dynamite (developed by Alfred Nobel), TNT, RDX, PETN and HMX

Answer 27

secondary explosive

Question 28

– are also called blasting agents, such as Ammonium Nitrate/Fuel Oil Mixture

Answer 28

tertiary explosives

Question 29

have SLOW burning gunpowder

Answer 29

long arms