Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CPI FINALS > EXPLOSIVES > Flashcards

EXPLOSIVES Flashcards

1
Q

substance is a solid or liquid substance (or a mixture of substances) that is in itself capable by chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings.

A

EXPLOSIVE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

explosive mixture of sulfur, charcoal, and saltpeter)

A

Black Powder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

the discovery of nitroglycerin and nitrocellulose

A

before 1850

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

the invention of dynamites and mercury fulminate blasting cap

A

after 1850

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

smokeless powder was made

A

1887

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Where did we employ explosive?

A

Mining
Digging
Trucks and airplanes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Mining of all kinds depends on_____, it is necessary to act as the clearing, of stumps and large boulders from land.

A

blasting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Digging of holes for tree planting and ditches for drainage is quickly efficiently, and cheaply done by means of

A

dynamite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

is a material that, under the influence of thermal or mechanical shock, decomposes rapidly and spontaneously with the evolution of a great deal of heat and much gas

A

explosive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

contains lead azide, mercury fulminate, diazodinitro-phenol, lead styphnate (lead trillitro-resorcillate).

A

Initiating or primary explosives (detonators)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

sensitive materials which can be made to explode by the application of fire or by means of a slight blow.

A

Initiating or primary explosives (detonators)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

used in primers, detonators, and percussion caps

A

Initiating or primary explosives (detonators)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

includes amatols, pentaerythritoltetranitrate, cyclonite (hexogen or R.D.X.), tetryl,l dynamites, nitro-starch.

A

High explosives-trinitro-toluene (T.N.T.)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

insensitive to both mechanical shock and flame but explode with great violence when set off by an explosive shock such as that which would be obtained by detonating a small amount of an initiating explosive in contact with the high explosive.

A

High explosives-trinitro-toluene (T.N.T.)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

in high and primary explosives, decomposition proceeds by means of

A

detonation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

is rapid chemical destruction progressing directly through the mass of the explosive.

A

detonation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

also is used as a booster between the initiating and high explosive

A

tetryl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

-mode of decomposition is burn.
-less shattering
- evolve large volumes of gas on combustion in a definite and controllable manner.

A

Low explosives or propellants-colloided cellulose nitrate (smokeless powder)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

refers to all black powder having sodium or potassium nitrate as a constituent

A

black blasting powder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Considered to be one of the most useful explosives

A

black blasting powder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
  • One which has been approved by the US Bureau of Miners or British Ministry of Fuel and Power for use in gas or dust-filled mines.
A

permissible explosive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

how many percent does permissible explosives are employed in coal mines

A

99%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

constitutes over 65 percent of the weight of the permissible

A

ammonium nitrate explosives

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

contain an excess of free water or carbon

A

nitro-glycerine explosives

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

permissible explosive includes

A

ammonium nitrate,
hydrated,
organic nitrate and
nitroglycerin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

power is also called

A

brisance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

may be measured by exploding a small quantity of it in a sand bomb

A

power or brisance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

a heavy-walled vessel designed to resist the explosion without being ruptured

A

sandbomb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

sand bomb cotains how many grams of ottawa silica sand

A

200 grams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

the sand is sieved and the weight of sand passing through the 20-mesh screen is taken as a measure of the power of the explosive being tested

A

false-(30)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

measures the power of the explosive by measuring the ballooning of a soft lead cylinder in which the explosive is inserted and exploded

A

trauzl block test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

how deep is the center hole of the trauzl block

A

125 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

how many grams of explosive is used in making the trauzl block test and the results are reported in terms of the cubic centimeters of increase in volume caused by the detonation of the explosive.

A

10 grams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

is determined by finding the height from which a standard weight must be allowed to fall in order to detonate the explosive and is important in the case of initiating explosives

A

sensitvity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

a recent method developed for determining the velocity of detonation

A

high-speed photography.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

is dependent on many factors including the composition of the explosive, the density at which it was loaded BEFORE firing, and the degree of confinement.

A

velocity of detonation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

tests that are frequently run to determine the stability of explosives on storage

A

accelerated aging tests

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

The speed required for the evolution of traces of oxides of nitrogen at a comparatively high temperature is most frequently used for this purpose.

A

false (time)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

holds the primer, igniter, and propellant charge

A

steel or thin brass cartridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

The bursting charge or high explosive is usually T.N.T. alone or in admixture with, for example, P.E.T.N., R.D.X., or tetryl.

A

T.N.T. alone or in admixture with, for example, P.E.T.N., R.D.X., or tetryl.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

sets off a small quantity of a primary explosive (detonator) which causes the explosion of the booster

A

fuze

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

an explosive of intermediate sensitivity (between that of a primary explosive and the bursting charge), which picks up the explosive wave from the primary explosive, amplifies it, and ensures the complete detonation of the bursting charge.

A

booster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

contains a small amount of a primary explosive or sensitive mixture

A

primer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

sequence in the ammunition

A

igniter
propellant
projectile
fuze
detonator
booster
bursting charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

must have heavy walls and contain an explosive so insensitive to impact .

A

projectiles designed for armor pirceing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

At high enough temperatures, ________can violently decompose on its own. This process creates gases including nitrogen oxides and water vapor.

A

ammonium nitrate

47
Q

-extremely low sensitivity to impact
-low cost of production
-excellent thermal stability

A

Guanidine picrates

48
Q

2 suitable explosives that can be used in projectiles

A

ammonium nitrate
guanidine picrate

49
Q

Special projectiles loaded with lead balls embedded in a matrix of rosin or bakelite and
equipped with a time fuze causing them to explode in mid-air are known as

A

shrapnel

50
Q

pushed black powder out of use as a military propellant.

A

nitro-cellulose

51
Q

what is the molecular weight of cellulose

A

300,000

52
Q

The finished nitro-cellulose should not be allowed to become acid in use or storage as this catalyzes its further decomposition.

A

true

53
Q

is added which reacts with any trace of nitrous, nitric, or sulfuric acid that may be released due to the decomposition of the nitro-cellulose and thus stop further decomposition.

A

stabilizer

54
Q

the stabilizer used in smokeless powder

A

diphenylamine

55
Q

stabilizer used in celluloid

A

urea

56
Q

Poaching of the washed nitrated cotton by boiling first with a dilute Na2CO3 solution (5 lb. soda ash per ton of the cellulose nitrate) and then with many washes of boiling pure water

A

unit pr.

57
Q

The poached nitro-cellulose is freed of most of its water by

A

centrifugation

58
Q

centrifugation of poached nitro-cellulose results in how many percent water content

A

28%

59
Q

The water content of the nitrated cotton is reduced to a low figure by _________ under ______

A

alcohol percolation
pressure dehydration (Op.).

60
Q

The nitro-cellulose produced in this manner contains about 12.6% nitrogen and is known as pyrocotton.

A

pyrocotton.

61
Q

the nitrogen content may be made as high as 13.6% nitrogen by using

A

stronger acid

62
Q

Cotton nitrated to contain 13.2% nitrogen or greater is known as

A

guncotton.

63
Q

The modern military smokeless powder contains about ____ nitrogen and is made from a blend of pyro- and guncotton.

A

13.15%

64
Q

is colloided nitro-cellulose containing about 1% of diphenylamine to improve its storage life and a small amount of a plasticizer

A

smokeless powder

65
Q

oldest known propellant.

A

Black powder

66
Q

replace black powder for its smokelessness, superior power, and better storage characteristics

A

smokeless powder

67
Q

are low explosives consisting of fuels that include their own oxidant or other reactants necessary to cause the planned reaction

A

rocket propellants

68
Q

added to the combustion chamber as liquids used in a single propellant system, serving as fuel, oxidizer, and catalyst

A

liquid propellants

69
Q

used in bipropellant systems- fuels and oxidizers stored in two fuel tanks and fed separately to the combustion chamber

A

liquid fuel

70
Q

combined the fuel and oxidizer in one mixture

A

monopropellants

71
Q

used in large high-performance rockets for their specific impulse and low cost

A

LOX and LH2

72
Q

have the advantage over liquid because of their simple design and they are easily stored, handed, and serviced

A

SOLID PROPELLANTS

73
Q

TWO CLASSIFICATIONS OF SOLID PROPELLANTS

A

HETEROGENOUS OR COMPOSITE
HOMOGENOUS

74
Q

APPLICATION OF SOLID PROPELLANTS

A

PROPULSIVE UNITS FOR MISSILES
TARGET DRONES
SUPERSONIC SLEDS

75
Q

a type of spacecraft that require rocket propulsion for launching

A

Artificial satellites

76
Q

Industrial procedures which make use of small quantities of explosive

A

Miscellaneous Industrial Explosive

77
Q

can be placed without backing devices

A

Explosive rivets

78
Q

extremely reliable on space missions and in industrial emergency devices

A

Explosive thrustors
, pin pullers,
separators,
and release deviceS

79
Q

to form plate heat exchangers

A
  1. Explosive welding –
80
Q

are explosive powered

A

Ejection seat

81
Q

mixture of strong oxidizing agents, oxidizable material and material acting as binders that alter the character of the flame with color-producing chemical

A

pyrotechnics

82
Q

Pyrotechnics mixtures uses

A

illuminatiing flares
marine signal rockets
red signal flare by trucks and trains
colored knowght mixtures fir military purposes

83
Q

is an essential industry that is highly mechanized

A

manufacture of matches

84
Q

A fuel with a low kindling point

A

phosphorous sesquisulfide

85
Q

oxidizing agent in matches

A

potassium or barium chlorate

86
Q

two categories of matches

A

safety and strike-anywhere

87
Q

cost is less vital and accent is on performance and good storage life

A

military explosives

88
Q

major explosive substance

A

Ammonium nitrate

89
Q

used for armor-piercing shells for its extraordinary resistance to shock

A

ammonium pictrate

90
Q

Important military explosive with a mixture of ammonium nitrate
Loaded into bombs and shells in a molten state because of its low melting point
Made by multiple-stage nitration of toluene with nitric and sulfuric acids

A

trinitrotoluene

91
Q

2,4,6- trinitrophenylmethylnitramine, C6H2(NO2)3NCH3NO2
Used as a base charge in blasting caps, booster explosive in high-explosive shell, and ingredient of binary explosives

A

tetryl

92
Q

2,4,6- trinitrophenol
Manufactured by the nitration of mixed phenolsulfonates with mixed acid

A

pictric acid

93
Q

Ammonium picrate
Made by neutralization of mixed phenolsulfonate with mixed acids.

A

explosive D

94
Q

Pentaerythritol tetranitrate C(CH2ONO2)4
One of the most brisant and sensitive of the military high explosive
Use as a booster explosive, bursting charge, or plastic demolition charge
Desensitized by admixture with TNT or addition of wax

A

PETN

95
Q

Cyclonite or sym-trimethylenetrinitramine (CH2)3N3(NO2)3
One of the most powerful explosive known at present time
Used in a mixture with TNT and aluminium, known as torpex for mines, depth charges and torpedo warheads

A

RDX

96
Q

Replace mercury fukminate as an initiating explosive for blasting caps
Has remarkable stability, involves no strategic materilas, and can be manufactured in large batches

A

LEAD AZIDE

97
Q

Trinitroresorcinol
Forms two salt on reaction with lead acetate or nitrate, basic lead stypnate C6H2(NO2)3OPbOH and lead styphnate

A

STYPHNIIC ACID

98
Q

basic styphnate is a favorite primer ingredient

A

LEAD STYPHNATE

99
Q

were the largest single category of chemical supplies consumed during World War 2 and were the vital factors in that victory

A

Incendiaries

100
Q

Take the form of bombs, bomblets, artillery shells and grenades

A

incendiaries

101
Q

two classes of incediaries

A

metallic and peroleum

102
Q

causes ignition of combustible materials at the target

A

incediary

103
Q

oldest chemical weapon known to humans

A

flammable mixture

104
Q

mixture of aluminum powder and iron oxide

A

thermite

105
Q

when ignited, burn fiercely at a high temperature and cannot extinguished by means of water

A

thermite

106
Q

Modern use began 1915 with the release of chlorine

A

Toxic Chemicals

107
Q

toxic agents are designed to produce temporary incapacity

A

true

108
Q

toxic agents control riots and civil disobedience

A

true

109
Q

toxic agents produce sneezing, tears, vomiting and nausea

A

true

110
Q

use to hide area on a temporary basis
dispersed by mechanical, thermal, and chemical means

A

smokes or persistent fogs

111
Q

Created by forming low volatile droplets of water which remain dispensed in air

A

fogs

112
Q

used in smoke grenade

A

oil vapor mists

113
Q

Made by burning pyrotechnics mixture which volatilizes various heat-resistant organic dyes

A

Colored smokes

CPI FINALS (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions