Which of the following pairs give a positive Tollen's test?

Which of the compounds $(A-D)$ depicted above is $NOT$ a hemiacetal linkage?

The functional groups involved in the conversion of glucose to gluconic acid and gluconic acid to saccharic acid respectively are

The correct observation in the following reactions is:
$\text{Sucrose}$ $\xrightarrow[\text{Cleavage (Hydrolysis)}]{\text{Glycosidic bond}} A + B$ $\xrightarrow[\text{reagent}]{\text{Seliwanoff's}} ?$

Identify the carbon atoms of $\alpha$-glucose and $\beta$-fructose forming the glycosidic linkage in sucrose.

$D$-glucose and $D$-fructose can be differentiated by