Which of the following is not a ketose?: (A) Ribose, (B) Erythrulose, (C) Fructose, (D) Ribulose
Answer is A. Ketoses: sugars with keto group. Ex: Dihydroxyacetone, Erythrulose, Xylulose, Ribulose, Fructose, SedoheptuloseRef: DM Vasudevan, 7th edition, page no: 70