The slurry, in its movement down the kiln, encounters a progressively higher temperature. At first, the water is driven off and ___ is liberated.

The slurry, in its movement down the kiln, encounters a progressively

1.	The slurry, in its movement down the kiln, encounters a progressively higher temperature. At first, the water is driven off and ___ is liberated.
A.	SiO2
B.	CO2
C.	Gypsum
D.	CaO
Answer» C. Gypsum