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NDA 2023 GAT · General Knowledge · Carbon and Organic Chemistry · easy

The gas commonly used for cutting and welding metals along with oxygen is

Single correct option

The gas commonly used for cutting and welding metals along with oxygen is
  1. A. Acetylene
  2. B. Methane
  3. C. Ethene
  4. D. Hydrogen sulphide
Show answer and solution

Answer: (A) Acetylene

The oxy-acetylene flame reaches about 3000 °C, high enough to melt steel, which is why acetylene is used in welding and cutting. Methane burns at a lower temperature and hydrogen sulphide is a toxic gas, not a fuel for this use.
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Original question written in the NDA 2023 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake