HS1 First Semester Exam

Which symbol means "biohazard" and typically refers to medical wastes?

• 
• 
• 
• 

You should always wash your hands after a lab even if you wear gloves.

• true

• false

Solutions that will be used in the laboratory:

• can be mixed together in most cases
• can be injurious, so avoid eye and skin contact
• do not always need a label
• are all safe for your use

Wearing safety glasses in a laboratory:

• is never necessary
• should be done if you think it's necessary
• is a requirement at all times
• is required for certain procedures

Three things needed for a fire are:

• air, oxygen and fuel
• fuel, heat, and oxygen
• fuel, carbon dioxide and heat
• air, carbon dioxide and fuel

What class of fire can a water extinguisher be used on?

• B
• E
• F
• A

P in the PASS acronym stands for

• Push
• Practice
• Pull
• Poke 

Where should you aim at the fire? 

• Base
• Top
• Middle 
• Side 

Fires where wood, paper, and cloth are burning are considered to be which class of fire? 

• Class A
• Class B
• Class C
• Class D

Fires where electrical items are burning are considered to be which class of fire? 

• Class A
• Class B
• Class C
• Class D