Q1: During drying operation, it is easier to remove the __________ moisture.

ANS:C - unbound

During a drying operation, it is easier to remove the unbound moisture. Explanation:

• Unbound moisture, also known as free moisture, refers to the moisture that is not chemically or physically bound to the material being dried. It exists in the form of free water or water droplets on the surface of the material.
• Unbound moisture is relatively easy to remove because it is not tightly held within the material's structure. It can be removed through evaporation, either by applying heat or by increasing the airflow around the material.
• In contrast, bound moisture refers to the moisture that is chemically or physically bound to the material's structure. This moisture is more difficult to remove because it is held within the material's pores or molecular structure and requires more energy to break the bonds holding it.
• During a drying operation, the goal is typically to remove as much unbound moisture as possible before tackling the bound moisture, as unbound moisture is easier to remove and often constitutes the majority of the moisture content in the material.