Safety Identification — Standard Cylinder Color for Acetylene (Shop Practice) In workshop gas handling under typical Indian/ISO color practice, acetylene cylinders are usually painted which color for quick identification?

Introduction / Context:
Correct gas cylinder color identification is a critical safety practice in welding and cutting shops. Misidentification can lead to dangerous connections or incorrect regulator use. Acetylene, being highly flammable and stored in porous mass with solvent, has a standard color for its cylinders in many regions including India.

Given Data / Assumptions:

• Conventional workshop color codes applied (Indian/ISO practice).
• Cylinders are visually identified before attaching regulators and hoses.
• Focus is on acetylene used with oxygen for oxy-fuel welding/cutting.

Concept / Approach:
Color codes provide redundant safety cues beyond label text. Under common practice, acetylene cylinders are maroon, oxygen cylinders are black (or sometimes white/black depending on local standards), and inert gases have their own codes. Trainees must internalize these visuals to prevent cross-connection.

Step-by-Step Solution:
Identify the target gas: acetylene for oxy-fuel welding.Recall standard shop code: acetylene → maroon body.Therefore, the correct choice is “maroon colour”.

Verification / Alternative check:
Cross-verify with institutional safety charts or supplier documentation in your facility; maroon is consistently specified for acetylene in Indian practice.

Why Other Options Are Wrong:
Black/white/yellow/green correspond to other gases or regional variants; not the standard acetylene code in the stated context.

Common Pitfalls:
Relying solely on color without reading labels; always confirm contents before use.

Final Answer:
maroon colour