Question

question 9
what can particulate matter be compared to for size comparison?
household dust particles
saw dust particles
metal shavings
drops of water
question 10
if there is standing water within the work area, it is reasonably safe to begin/continue welding.
true
false

Explanation:

• Question 9: Particulate matter is very small. Household dust particles are of a similar small - scale size range as particulate matter. Sawdust particles, metal shavings, and drops of water are relatively larger in comparison.
• Question 10: Standing water in a work area where welding is to be done is extremely dangerous. Welding involves electrical equipment, and water is a good conductor of electricity. This creates a high risk of electric shock.

Answer:

• Question 9: household dust particles
• Question 10: False