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Which of these is not true when a gas is compressed in a bicycle pump?

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in Aerodynamics by (773k points)
Which of these is not true when a gas is compressed in a bicycle pump?

(a) Temperature increases

(b) Pressure increases

(c) Volume increases

(d) Heat is exchanged

The question was posed to me in semester exam.

This interesting question is from Definition of Compressibility topic in division Compressible Flow – Preliminary Aspects of Aerodynamics

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The correct answer is (c) Volume increases

To explain: When a gas is compressed, the temperature and pressure increases. This is observed in real life also. The volume of the gas decreases due to compression. Heat is transferred in or out of the system also.

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