Question

practice:

1. describe the uses of

the following safety
equipment: eye
wash,
chemical/safety
shower, fire blanket,
and fire
extinguisher.

1. describe the

appropriate way to
smell an unknown
substance in lab.

Explanation:

Question 1

• Eye wash: Used to flush eyes when exposed to harmful substances (like chemicals) to prevent injury or irritation.
• Chemical/safety shower: For rinsing the entire body if splashed with hazardous chemicals to minimize skin damage.
• Fire blanket: Smothers small fires (e.g., clothing fires or small lab fires) by cutting off oxygen, stopping combustion.
• Fire extinguisher: Extinguishes fires by using agents (like dry chemical, CO₂) to remove heat, oxygen, or fuel from the fire triangle.

To smell an unknown substance in the lab, use the "wafting" technique. Hold the container at arm's length, gently wave your hand over the opening to direct a small amount of the vapor towards your nose. Do not put your nose directly over the container, as the substance could be toxic, corrosive, or irritating.

Answer:

• Eye wash: Flush eyes after chemical exposure.
• Chemical/safety shower: Rinse body after chemical splash.
• Fire blanket: Smother small fires (e.g., clothing, small lab fires).
• Fire extinguisher: Extinguish fires using fire - fighting agents.

Question 2