A solution of known molarity is called a standard solution. Its concentration is determined by a process known as standardization. solution of known molarity is called a standard solution. Its concentration is determined by a process known as standardization.
1. Gypsum False Ceiling: Gypsum false ceiling is a hydrated sulfate of calcium. This type of false ceiling are lightweight, sound insulated, fire resistance, soft and thermally insulated. Gypsum false ceiling comes in the shape of square boards that are hung with the help of iron framework.
There are three major compositions of drywall which go by four different names: regular, type X, mold/mildew resistant, and moisture resistant. Regular (gypsum plaster core) is the least expensive and most common; the 1/2 thickness is used for most interior walls and ceilings above grade.