(B), Product (B) in this reaction is:

, Product (B) of this reaction is:

, Product (B) of this reaction is:

, Product (B) of this reaction is :

, Product (B) of this reaction is :

, Product (B) of this reaction is :

Product (B) in the reaction is : .

underset("Calcium carbide")(CaC_(2))overset(H_(2)O)(to)(A)overset("Red hot Cu tube")(to)(B) , Product (B) of the reaction is: