What is the chemical formula of plaster of paris?

(i)What is the chemical name and chemical formula of Plaster of paris? (ii) Write a reaction between plaster of paris and water. (iii) Write two uses of washing soda. (iv) What is chlor alkali process? Name two products obtained during this process.

Plaster of paris is

Write the formula of plaster of pairs.

Give the chemical formula of Borax.

State the chemical name of plaster of paris . Write a chemical equation to show the reaction between plaster of paris and water.

(a) Write the chemical formula of hydrated copper sulphate and anhydrous copper sulphate. Give an activity to illustrate how these two are inter convertible. (b) Write chemical names and formulae of Plaster of paris and gypsum.

Give the chemical formula of borazine.

Give the chemical formula of washing soda.

What is the chemical nature of biogas?