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Engineering Exams RRB-JE CS (Chemical Supervisor - Research) Technical Abilities 2025 22.04.25 Paper-2 Shift-2 Easy +1 -0.33
type of flame is commonly used for welding mild steel.
Correct Answer: A. Neutral
Explanation: A neutral flame is the preferred choice for welding mild steel because it provides a balanced chemical environment that does not alter the composition of the metal. This type of flame is produced by an equal ratio of oxygen and acetylene, resulting in a clean weld without adding excess carbon or causing oxidation. Because it maintains the integrity of the base metal while providing sufficient heat, it ensures a strong and reliable bond in mild steel applications.
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