plaster of paris

Irreversible Changes

Last Updated on June 30, 2020 By Mrs Shilpi Nagpal 2 Comments

Question 1 What are irreversible changes? Question 2 Give few examples of irreversible changes? Question 3 Milk can be changed into curd but curd cannot be changed back into milk.What is the name of the change? Question 4 Burning of paper is an irreversible change. Explain ? Question 5 When water is mixed with POP and allowed to dry, it sets into a hard mass.Explain … [Read more...] about Irreversible Changes

Plaster of Paris

Last Updated on February 28, 2020 By Mrs Shilpi Nagpal 20 Comments

Question 1 Write the chemical formula and name of plaster of paris? Question 2 What is gypsum? Question 3 Name the calcium compound which hardens on wetting with water? Question 4 What will happen if heating is not controlled while preparing plaster of paris? Question 5 Name the compound which is used in hospitals for setting fracture bones? Question 6 How … [Read more...] about Plaster of Paris