Question

if a mercury thermometer breaks, you should:
allow the mercury to evaporate on its own.
wipe away the mercury with a paper towel.
wash the mercury down the drain.
inform the instructor immediately.
question 10 (mandatory) (0.5 points)
if a beaker, flask, or test tube has a very small crack, you should:
put a piece of tape over the crack and use it normally.
use your own judgment about whether the flaw will create a hazard, and act accordingly.
dispose of it in the regular trash and obtain a replacement.
dispose of it in the glass waste and obtain a replacement.

Explanation:

First Question (Mercury Thermometer Break):

Mercury is toxic. Allowing it to evaporate, wiping with a paper towel, or washing down the drain are unsafe. In a lab setting, informing the instructor immediately is the correct safety protocol to handle the hazardous material properly.

Taping and using cracked glassware is dangerous (could break further). Using personal judgment is not sufficient for lab safety. Regular trash is wrong for glass; cracked glassware should be disposed of in glass waste, and a replacement obtained to ensure safety.

Answer:

D. inform the instructor immediately.

Second Question (Cracked Glassware):