Biochemistry Quiz

It is a visual representation of health hazard, flammability, reactivity and special hazards.

• NFPA diamond

• GHS

• UNECE

• WHO

It is a gas or vapor that can cause unconsciousness or death by suffocation due to lack of oxygen.

• allergen

• asphyxiant

• carcinogen

• corrosive

It specifies the maximum amount or concentration of a chemical to which a worker may be exposed.

• Permissible Exposure Limit (PEL)

• Threshold Limit Value (TVL)

• Immediate Danger To Life Or Health (IDHL)

• Flammability Limit

It is the lowest temperature at which a liquid or solid can produce a vapor sufficient to form an ignitable mixture in the air.

• flash point

• boiling point

• melting point

• triple point

Which is an example of a corrosive acid?

• H₂SO₄

• NaOH

• NO₂

• KMnO₄

When inhaling chemicals, what is the route of exposure?

• Gases, vapors, mists, fumes and dusts enter through the nose or mouth. 

• Liquid and solid chemicals enter the body through the gastrointestinal tract. 

• Chemicals enter the body when absorbed by the skin

• Chemicals enter the body when sharp objects such as used needle and broken glass puncture the skin.

What should you do best if you are unfamiliar with a substance required in your study?

• ask the lab personnel or the instructor

• proceed with the experiment

• look for familiar substances

• look it up online

In the hazard identification system, yellow diamond means _________

• health hazard

• flash point

• reactivity

• special hazard

What is used to hold or clamp laboratory glassware and other equipment in place, so it does not fall down or come apart?

 

• ring stand

• ring clamp

• stirring rod

• crucible stand