Glucose and mannose are.......

Which set of terms correctly identifies the carbohydrate shown?
$1$. Pentose $2$. Pentulose $3$. Hexulose $4$. Hexose
$5$. Aldose $6$. Ketose $7$. Pyranose $8$. Furanose

The reaction of $D$-glucose with ammoniacal $AgNO_3$ produces:

Starch is a polymer of

Which one of the statements concerning the equilibrium shown is true?

Glucose gives a silver mirror with Tollen's reagent. It shows the presence of: