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Chemical Engineering Basics

Q1: Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)

A T

B 1/p

C y

D 1/ρ

ANS:B - 1/p

In the case of sound waves traveling through a gas, the velocity (v) of the gas is not directly proportional to the temperature (T) of the gas. Instead, the velocity of sound (v) in a gas is given by the equation: v=ρy⋅P​​ Where:

  • T = Absolute temperature of the gas (not directly proportional to velocity).
  • P = Absolute pressure of the gas.
  • y = Ratio of specific heats (Cv​Cp​​).
  • ρ = Specific weight of the gas (reciprocal of density, not directly proportional to velocity).
Therefore, the correct option is T (temperature).



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