What is the term used to describe the sudden expansion of a fluid into a vacuum through a large orifice?

Thermodynamics MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Thermodynamicsmechanical-engineering-mcqs › thermodynamics
Published
26 Jan 2019
Last updated
28 May 2026

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Explanation

When a fluid rapidly expands into a vacuum through a wide opening without external work or heat exchange, this process is known as free expansion.

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