Explain these 2 questions?

79 Thermodynamics & Thermochemistry 57. Consider the statements 0) Heat IS either iternal energy or enthalpy in transit depending on the experu 1 when heat is absorbed by the svstem a change of temperature may or may noua5 ) Heat capacity may be positive negative or infinite. avfor ideal and van der wall is 0 T The corTect above are (a) (i), (ii) (b) ). (i) Incorrect statement from the given statement 1S (c) (), (ii) and (iv) (d) All are correct 58 (a) In adiabatic free expansion, internal energy remains constant (b) The ratio of Cp and Cy for ideal gas is dependent on temperature only (c) The difference between heat capacity for ideal gas is not function of temperature (d) In case of van der wall gas Cp is independent of pressure and dependent on temperature 59 a oac obey the van der wall eamation of state the ratio offC. ).and (C. and (C.