Question

lab safety quiz
0:04:10 elapsed
question 10 (1 point)
long hair should always be tied back when working in the lab.
true
false
question 11 (1 point)
when smelling an unknown compound, you should place your nose next to the container and inhale deeply.
true
false

Explanation:

Long hair can pose a safety hazard in a lab by getting caught in equipment or coming into contact with chemicals, so it should be tied back. When smelling an unknown compound, placing the nose next to the container and inhaling deeply is dangerous as the compound could be harmful; one should use the wafting technique instead.

Answer:

Question 10: A. True
Question 11: B. False