Question 1
On oxyacetylene equipment, fuel-gas (acetylene) hose and torch fittings are made with which thread to keep them from being connected to the oxygen side?
Correct Answer:
Left-hand (reverse) threads, often with a notched nut
Question 2
Under OSHA 29 CFR 1910.253, acetylene shall not be generated, piped (except in approved cylinder manifolds), or utilized at a pressure in excess of:
Correct Answer:
15 psig (103 kPa gauge)
Question 3
When oxygen cylinders are in storage, OSHA 1910.253 requires them to be separated from fuel-gas cylinders by:
Correct Answer:
A minimum of 20 feet, or a noncombustible barrier at least 5 feet high with at least a one-half-hour fire-resistance rating
Question 4
A correctly adjusted neutral oxyacetylene flame is recognized by:
Correct Answer:
A well-defined bluish-white inner cone and a light-blue outer envelope, with the acetylene feather just gone
Question 5
In standard US oxyfuel color coding, the acetylene hose is typically which color?
Correct Answer:
Red
Question 1
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About this Exam

Prepare with the MS Welding Practice Questions - Mississippi Welding Contractor Examination Exam practice quiz. This question bank includes 100 questions covering pipe, welding, steel, weld, and acetylene. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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MS Welding Practice Questions - Mississippi Welding Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on pipe, welding, steel, weld, and acetylene. 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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