explosives test 4/20/26

What is NOT true about primary explosives?

They are very stable.

Most explosives can be recovered from debris for future study by being rinsed with:

Acetone

Which is an explosive readily detonated by heat or shock?

Primary explosive

Which is the most widely used low explosive?

Smokeless powder

A procedure commonly used as a screening test for explosive residues is:

All of the above

Which are common chemical ingredients of black powder?

Sulfur (Potassium nitrate, charcoal, sulfur)

Which of the following is NOT a military explosive?

Nitroglycerin

Single-base smokeless powder consists of:

Nitrocellulose

Which type(s) of screening and confirmation tests are used for analyzing evidence of explosives?

All of the above

A low explosive has a velocity of detonation less than:

1000 meters per second

Detonation is characterized by very rapid oxidation that produces heat, light, and a subsonic pressure wave.

False

The only ingredients required for a low explosive are fuel and a good oxidizing agent.

True (Oxidizing)

PETN is the most powerful and popular military explosive.

False

Soil and other soft loose materials collected at the scene of an explosion are best stored in metal containers.

True

Plastic bags are suitable to store evidence suspected of containing explosive residues.

False

Black powder does not explode when unconfined.

True

Military "dynamite" contains no nitroglycerin.

True

_______ is characterized by extremely rapid oxidation that produces a supersonic shock wave.

Detonation

A(n) _______ fuse consists of black powder wrapped in a fabric or plastic casing…

Safety

A(n) _______ is a device used to create an explosion needed to ignite a high explosive.

Detonator

The most obvious characteristic of a high or contained low explosive is the presence of a(n) _______ at the origin of the blast.

Crater

A primary explosive is easily detonated by heat, friction, or _______.

Shock