Fire in fuel gas pipelines is extinguished most effectively by _________________?
Correct answer: B. Blanketting the area with nitrogen atmosphere
- A. Spraying water
- B. Blanketting the area with nitrogen atmosphere
- C. Fire fighting foam
- D. None of these
Explanation
Nitrogen is inert and reduces the oxygen concentration around a fuel-gas fire, suppressing combustion without adding another combustible material. Water mainly cools the equipment, while foam is generally ineffective against a pressurised gas fire.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Addition of small amount of ________________ to grey cast iron is done to produce nodular grey cast iron ?
There are one octahedral void and ______________ tetrahedral void in the closest packing of atoms ?
The main reducing agent in iron blast furnace is____________________?
Fibrous fracture is normally encountered in the ____________________ materials?
The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as__________________?
The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is____________________?