Question 1
Before servicing HVAC equipment that may be energized, what is the most important first step?
Correct Answer:
Apply lockout/tagout and verify zero voltage
Question 2
Which document must be readily accessible to workers and lists a hazardous chemical's handling and first-aid information?
Correct Answer:
Safety Data Sheet (SDS)
Question 3
What gas is commonly used to purge tubing of oxygen during brazing to prevent internal oxidation (scale)?
Correct Answer:
Nitrogen
Question 4
When refrigerant is released into a confined space, what is the primary exposure danger?
Correct Answer:
Oxygen-deficiency asphyxiation
Question 5
Which type of fire extinguisher is rated for use on energized electrical equipment fires?
Correct Answer:
Class C
Question 1
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About this Exam

Prepare with the NATE Core Practice Questions - NATE Core Knowledge Exam practice quiz. This question bank includes 100 questions covering heat, tubing, tool, circuit, and comfort. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NATE Core Practice Questions - NATE Core Knowledge Exam

This practice set contains 100 questions from the matching question bank and focuses on heat, tubing, tool, circuit, and comfort. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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