Glucose,on oxidation with $Br_{2(aq)}$ gives

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

$A$ certain compound gives a negative test with ninhydrin and a positive test with Benedict's solution. The compound is:

$\alpha-D$-Glucopyranose and $\beta-D$-Glucopyranose are:

Which of the following is not an aldose?

Which of the following is correct?
Pentaacetate of glucose $\xrightarrow{\text{Tollen's reagent}} +ve$ test $(A)$
Pentaacetate of glucose $\xrightarrow{\text{Benedict's reagent}} +ve$ test $(B)$
Pentaacetate of glucose $\xrightarrow{\text{Schiff's reagent}} -ve$ test $(C)$
Pentaacetate of glucose $\xrightarrow{NaHSO_3} -ve$ test $(D)$