Correct option is C
Solution
Concept:
· In the laboratory, ethylene and acetylene can be distinguished by
Tollens reagent.
· Tollens' reagent is a chemical reagent used to determine the presence of
aldehyde, aromatic aldehyde, and alpha-hydroxy ketone functional groups.
· Tollens' reagent is basically an ammoniacal silver nitrate solution.
· It can also be used to identify C2H2 (Acetylene)