To become a carbohydrate,a compound must contain at least

$D-(+)$-glucose reacts with hydroxylamine $(NH_2OH)$ to yield an oxime. The structure of the oxime is:

Glycosidic linkage is actually an

Number of optical isomers in the open chain structure of glucose is

$STATEMENT-1$: Glucose gives a reddish-brown precipitate with Fehling's solution. because
$STATEMENT-2$: Reaction of glucose with Fehling's solution gives $CuO$ and gluconic acid.

$\alpha-D$-glucose and $\beta-D$-glucose differ from each other due to the difference in the configuration of one of the carbons.