An ideal gas____________________?
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Answer: E. none of the above
Explanation
An ideal gas is a theoretical construct obeying the simple universal equation of state relating pressure and temperature. Real gases approximate this idealized behavior only under conditions of low pressure and sufficiently high temperature. Properties like viscosity and compressibility vary independently and are not constrained to zero in ideal gas definitions. The ideal gas law is expressed mathematically as the product of pressure and volume equaling the gas constant times absolute temperature. Assumptions include negligible molecular volume and absence of intermolecular attractive or repulsive forces. Real fluids exhibit measurable viscosity and compressibility even when modeled using simplified thermodynamic equations.
Option A claims constant viscosity, which ignores temperature-dependent viscosity changes seen in real fluids. Option B claims zero viscosity, which describes an inviscid fluid rather than a standard thermodynamic ideal gas. Option C claims incompressibility, which contradicts the fundamental compressibility characteristic inherent to all gases.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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