Gas holder of a gobar (cow-dung) gas plant is made of___________________?
Correct answer: C. Mild steel
- A. Molybdenum stainless steel
- B. Tin
- C. Mild steel
- D. Aluminium
Explanation
The gas holder of a gobar-gas plant is commonly fabricated from mild steel because it is economical, weldable, and sufficiently strong for low-pressure biogas storage. Tin and aluminium are not the usual structural choices for this service.
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