Glucose and Fructose — Prelims Questions

Which of the following statements about glucose and fructose is INCORRECT?

Which of the following reagents would distinguish between glucose and fructose?

Upon reduction with $NaBH_4$, D-glucose yields sorbitol. What product(s) would D-fructose yield under similar reduction conditions?

Which of the following is a characteristic test for ketohexoses like fructose?

Which of the following pairs of monosaccharides will yield the same osazone when reacted with excess phenylhydrazine?

In the Haworth projection of $\beta$-D-glucopyranose, the hydroxyl group at C-1 is positioned: