Specific heat at constt. volume of an ideal gas

[Apashanka]

The ans comes out (c) if I take specific heat at constt volume to be independent of temp.
Whether the specific heat is always temp. independent for an ideal gas??

 

[Chestermiller]

Physicists define an ideal gas as a substance with a specific heat that is independent of temperature. Engineers define an ideal gas as the limiting behavior of a real gas at low density, such that its specific heat is dependent on temperature. Other disciplines, I don't know.