NBE Study Guide Chemistry Questions Flashcards
A liquid containing a dissolved substance or substances is a(n):
- Salt
- Acid
- Nitrite
- Solution
Solution
When used in arterial formuations eosine, ponceau red, and erythosine are examples of:
- Dyes
- Buffers
- Vehicles
- Deodorants
Dyes
A substance that prevents infection by killing bacteria is classified as a:
- Salt
- Soap
- Water
- Disinfectant
Disinfectant
The number of oxygen atoms in the formula 2Al(OH)3 is:
- 1
- 2
- 3
- 6
6
A 40% by volume solution of formaldehyde is called:
- Methanol
- Ethanol
- Formalin
- Tincture
Formalin
The chemical group that makes an alcohol molecule soluble in water and useful to the embalmer is:
- NH3
- OH
- CO3
- PO4
OH
According to OSHA, the proper way to neutralize a formaldehyde spill is to:
- Add ammonia, then wipe up
- Dilute with water
- Clean up with soap and water
- Use a wet vacuum
Add Ammonia, Then Wipe up
Formaldehyde is an ingredient of embalming fluid used to:
- Retain water
- Preserve tissue
- Prevent coagulation
- Mask odors
Preserve Tissue
An amine produced during putrefaction is:
- Urotropin
- Glycine
- Putrescine
- Methanal
Putrescine
Formaldehyde in a dry powdered form is also known as:
- Alum
- Urotropin
- Perlite
- Paraformaldehyde
Paraformaldehyde
A substance that is capable of bringing about a reduction in the surface tension of a fluid.
- Surfactant
- Buffer
- Humectant
- Acid
Surfactant
Which of the following are properties of formaldehyde?
- It is a colorless gas
- It is quite soluble in water
- It combines with water to form methylene glycol
- It is easily oxidized to form acetic acid
1,2 and 3
(It is a colorless gas, it is quite soluble in water, it combines with water for form methylene glycol)
Formaldehyde reacts with ammonia to form:
- Paraformaldehyde
- Urea
- Urotropin
- Glyoxal
Urotropin
In comparing cavity fluid to arterial fluid, the cavity fluid will have:
- A lower index
- No active dyes
- No modifying agents
- No surfactants or vehicles
No Active Dyes
Polymerization of formaldehyde is inhibited by the addition of:
- Distilled water
- Methyl alcohol
- Aluminum chloride
- Magnesium chloride
Methyl Alcohol