Question 6018 of 406 · Illinois Pesticide Applicator General Standards Exam
Why is a hose end resting below the liquid surface in a spray tank a hazard?
Exactly one answer is correct.
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Correct answer to question 6018
- A: Falling water pressure can siphon the mix into the supply
Explanation
A pressure drop in the supply line can pull the tank contents backward through a submerged hose. This is called back-siphoning and can contaminate drinking water.
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