The local swelling of a finished plaster, is termed A. Cracking B. Dubbing C. Blistering D. Hacking

The correct answer is C. Blistering.

Blistering is a defect in plaster that occurs when the plaster is applied too thickly or when the surface is not properly prepared. It is characterized by small, raised areas on the surface of the plaster.

Cracking is a defect in plaster that occurs when the plaster is not allowed to dry properly or when it is subjected to too much stress. It is characterized by fine lines or cracks on the surface of the plaster.

Dubbing is a defect in plaster

Hacking is a defect in plaster that occurs when the plaster is not finished properly. It is characterized by rough or uneven surfaces on the plaster.