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.
Ceiling tile is sold in many different materials, sizes and thicknesses and made to fasten directly to ceilings or fit into a grid system called a suspended or drop ceiling. Popular types include cork, tin, plastic and acoustical. Acoustical ceiling tile reduces noise, as it has sound absorbent properties.