An organic compound with the formula C6H12O6 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 ?

Question

An organic compound with the formula C6H12O6 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 ? (A) Fructose (B) Glucose (C) Mannose (D) Sucrose

Tardigrade Admin · Accepted Answer

As C6H12O6 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.

Q. 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 ?

Fructose

Glucose

Mannose

Sucrose

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.

Q. An organic compound with the formula C6​H12​O6​ 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 ?