Delphi Technique is the method in which group communication takes place between experts for forecasting about any particular subject through discussion. This discussion is carried between expert panel through questionnaires in multiple level or rounds.

Series of questions are sent to them upon which judgement and decision is made through systematic debate.This process is for estimation without face to face meeting. .

7 0

3 years ago

What do you mean by limestones

velikii [3]

Answer:

Limestone is a type of carbonate sedimentary rock. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate. A closely related rock is dolomite, which contains a high percentage of the mineral dolomite, CaMg(CO₃)₂.

Limestone has numerous uses: as a building material, an essential component of concrete (Portland cement), as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, as a chemical feed stock for the production of lime, as a soil conditioner, and as a popular decorative .

Limestone is formed in two ways. It can be formed with the help of living organisms and by evaporation. Ocean-dwelling organisms such as oysters, clams, mussels and coral use calcium carbonate (CaCO3) found in seawater to create their shells and bones.

LIMESTONE MEANING:

a rock that is formed chiefly by accumulation of organic remains (such as shells or coral), consists mainly of calcium carbonate, is extensively used in building, and yields lime when burned.

8 0

3 years ago