Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

ANS:B - free

Moisture contained by a substance in excess of the equilibrium moisture is called the free moisture. Free moisture, also known as unbound moisture or excess moisture, refers to the moisture content of a substance that is not bound to the solid matrix and can be readily removed during drying processes. This excess moisture is typically found on the surface or within pores of the material and can be easily removed through evaporation or other drying mechanisms.