An organic compound with the formula C_6 H_(12) O_6 forms a yellow crystalline solid with phenylhydrazine and gives a mixture of sorbitol and mannitol when reduced with sodium. Which among the following could be the compound?

An organic compound with the formula C_6 H_(12) O_6 forms a yellow cry

1.	An organic compound with the formula C_6 H_(12) O_6 forms a yellow crystalline solid with phenylhydrazine and gives a mixture of sorbitol and mannitol when reduced with sodium. Which among the following could be the compound?
Answer» fructose glucose mannose sucrose Solution :As `C_(6)H_(12)O_(6)` forms a crystalline osazone with phenylhydrazine, it must be an aldohexose or KETOHEXOSE. As the compound on reduction with Na gives sorbitol and MANNITOL, the given compound is fructose. `UNDERSET("Fructose")({:(""CH_(2)OH),("\|"),(""C=O),("\|"),(HO-C-H),("\|"),(2H-C-OH ),("\|"),(" "H-C-OH),("\|"),(""CH_(2)OH):})overset(+4[H])to""underset("Methanol")({:(""CH_(2)OH),("\|"),(HO-C-H),("\|"),(HO-C-H),("\|"),(" "H-C-OH),("\|"),(" "H-C-H),("\|"),(""CH_(2)OH):}) + "" underset("Sorbitol")({:(""CH_(2)OH),("\|"),(" "H-C- H),("\|"),(HO-C-H),("\|"),(" "H-C-OH),("\|"),(" "H-C-OH),("\|"),(""CH_(2)OH):})`