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RRB Junior Engineer / DMS / CMA 2019 · Question 3449 of 3719

The ratio of oxygen to acetylene in the neutral flame is-

  1. A1 : 3
  2. B2 : 1
  3. C3 : 1
  4. D1 : 1Correct

Answer: D. 1 : 1

Explanation

Explanation: There are three different types of oxy-acetylene flames: Neutral flames: When oxygen acetylene ratio is almost equal, i.e. 1 : 1 Oxidizing flame: When the oxygen is greater than the fuel gas. Carburising flame: When the fuel gas is greater than the oxygen.

Source: RRB JE 2019 (CBT 2) (ME) Previous Year Paper (31 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary

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