A compound 'A' is used in the manufacture of cement. When dissolved in water, it evolves a large amount of heat and forms compound 'B'.(i) Identify A and B.(ii) Write chemical equation for the reaction of A with water.(iii) List two types of reaction in which this reaction may be classified.

A compound 'A' is used in the manufacture of cement. When dissolved in

1.	A compound 'A' is used in the manufacture of cement. When dissolved in water, it evolves a large amount of heat and forms compound 'B'.(i) Identify A and B.(ii) Write chemical equation for the reaction of A with water.(iii) List two types of reaction in which this reaction may be classified.
Answer» SOLUTION :(i) A is CAO (Quick lime) B is `Ca(OH)_2` (Slaked lime or lime water). (ii) `UNDERSET("Quick lime")(CaO)+2H_2Orarrunderset("Slaked lime or lime water")(Ca(OH)_2)` (III) COMBINATION reaction, Exothermic reaction