Wastewater Class 2 multiple choice Exam Questions with 100% correct answers
The threahold limit value concentration for chlorine vapour is: a. 0.1 ppm b. 0.3 ppm c. 0.5 ppm d. 1.0 ppm - correct answer c. 0.5ppm When working in confined spaces where flammable gasesmay be present, use only tools made of: a. stainless steel b. lead c. iron d. a non-sparking alloy - correct answer d. a non-sparking alloy In addition to the worker entering a confined space, what is thw minimum number of people required to be present during a confined space entry? a. 1 b. 2 c. 3 d. 4 - correct answer a. 1
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wastewater class 2
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wastewater class 2 multiple choice exam questions
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wastewater class 2 multiple choice