Statement 1: Setting of cement is an endothermic process.Statement 2: Setting of cement involves hydration and rearrangement of the molecules of calcium aluminates and calcium silicates.

Statement 1 : It is exothermic process.Statement 2 : Setting of cement takes place to give a hard mass. It is due to the hydration of the molecules of the constituents (dicalcium silicate 26%, tricalcium silicate 51% and tricalcium aluminate 11%) and their rearrangement.