Question

bunsen burner safety
the valve that adjusts the amount of air flow to the burner is called the:
○ base
○ barrel
○ collar

Explanation:

In a Bunsen burner, the collar is the part that can be rotated to adjust the air - inlet holes, thus controlling the amount of air flow to the burner. The base is the bottom support, and the barrel is the main tube through which the gas and air mixture travels.

Answer:

C. Collar