1.On heating lime stone release of which glass?
Ans. carbon dioxide
2. Plaster of Paris made from?
Ans. Gypsum
3.What is the pH of a solution of ph zero?
Ans. Acidic
4.setting of plaster of Paris is due to _____?
Ans: hydration
5. The odure of acetic acid due to presence of ______?
Ans: vinegar