1.

If the specific heats of dry air and water vapour are \[1.00\,\,\text{kJ/kg}-K\] and \[1.88\,\,\text{kJ/kg}-K\] respectively and the humidity ratio is 0.011, then the specific heat of moist air at  \[25{}^\circ C.\] and 50% relative humidity will be

A. \[1.0207\,\,\text{kJ/kg}-K\]          
B. \[1.869\,\,\text{kJ/kg}-K\]
C. \[1.891\,\,\text{kJ/kg}-K\]
D. \[0.9793\,\,\text{kJ/kg}-K\]
Answer» B. \[1.869\,\,\text{kJ/kg}-K\]


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