Title: Ch. 5.1.2 Safety Quiz
Course: Lab Safety > Section: Day 3

Based on the section 5.1.2 Flammables - Chemicals with a burning passion in the book Laboratory Safety for Chemistry Students by Hill and Finster, 2010 John Wiley and Sons

Q: Flammable chemicals are most commonly found in which caregory of chemicals?
- organic solutes
- organic solvents
- inorganic solutes
- inorganic solvents
A: organic solvents

Q: The most flammable chemicals are identified by
- "HC 1" in the GHS and "4" in the NFPA rating system
- "HC 1" in the GHS and "0" in the NFPA rating system
- "HC 4" in the GHS and "4" in the NFPA rating system
- "HC 4" in the GHS and "0" in the NFPA rating system
A: "HC 1" in the GHS and "4" in the NFPA rating system

Q: Which of the following are the three components of the fire triangle?
- fuel
- source of ignition
- an oxidizing agent
- a chain reaction
A: fuel; source of ignition; an oxidizing agent

Q: What is the most common oxidizing agent for fires?
- chlorine
- nitric acid
- elemental oxygen
- methane
A: elemental oxygen

Q: As a general rule, organic solvents are
- lighter than air and not flammable
- heavier than air and not flammable
- lighter than air and flammable
- heavier than air and flammable
A: heavier than air and flammable

Q: Which statement is true regarding the state of a chemical as it is burning?
- only liquids and gases/vapors can burn
- only liquids can burn
- only gases/vapors can burn
- solids, liquids, and gases/vapors can burn
A: only gases/vapors can burn

Q: The autoignition temperature for most organic solvents is
- fairly large
- the temperature at which a flammable chemical ignites spontaneously in air
- the temperature at which the solvent burns in an automobile
- both (a) and (b)
A: both (a) and (b)

Q: Which values best characterizes a flammable liquid?

Select all that apply.
- low boiling point
- high boiling point
- low vapor pressure
- high vapor pressure
- low flash point
- high flash point
A: low boiling point; high vapor pressure; low flash point

Q: Which is true?
- the LEL is lower than the UEL
- the UEL is lower than the LEL
- the UEL and LEL are often the same value
- the LEL and LFL are different numbers
A: the LEL is lower than the UEL

Q: Which chemical is the most dangerous in the lab with regard to potential fire hazard?
- dichloromethane
- ethanol
- diethyl ether
- toluene
A: diethyl ether

Q: Which chemical is the least dangerous in the lab with regard to potential fire hazard?
- acetone
- ethanol
- dichloromethane
- butanol
A: dichloromethane

Q: Using the GHS criteria, gasoline is categorized as
- extremely flammable
- highly flammable
- flammable
- combustible
A: highly flammable