On heating glucose with Fehling's solution,we get a precipitate whose colour is

Which of the following substances gives the iodine test?

The total number of hydroxyl $(-OH)$ groups in saccharic acid is:

Which of the following $n$ mole molecules of carbohydrate contains $2n$ mole molecules of galactose,$n$ moles of glucose,and $n$ moles of fructose upon hydrolysis?

Aldopentoses named as ribose and $2-$deoxyribose are found in nucleic acids. What is their relative configuration?

With which reagent does glucose react to form a crystalline osazone derivative?