Question

A compound which is prepared from gypsum has the property of hardening when mixed with proper quantity of water. (i) identify the compound. (ii) write the chemical equation for its preparation. (iii) mention one important use of this compound. 10th

Answer 1

Answer:

• the compound is plaster of Paris
• the equation is CaSO4.2H20 on heating gives CaSO4.1/2H20+3/2H2O
• use- plaster of Paris is used for making toys , material for decoration
• Making surface smooth