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Mechanical Properties Of Fluids

Question
CBSEENPH11019524

Can the specific heat of gas be infinity?

Solution
Yes, the specific heat of gas will be infinity. 
In an isothermal process, the specific heat of the gas is infinity. The whole of the heat supplied is used to do work on gas.
Increase in the temperature of gas is zero, for an isothermal process.
 i.e. ∆T= 0
So, specific heat of the gas is given as,
              space straight C equals fraction numerator d Q over denominator d T end fraction equals fraction numerator d Q over denominator 0 end fraction equals infinity