Which of the following compounds will behave as a reducing sugar in an aqueous $KOH$ solution?

Sucrose is dextrorotatory but after hydrolysis the mixture shows laevorotation,this is because of

Which of the following represents the correct structure of $\beta-D-(-)-$Fructofuranose?

Compound $A$ gives $D$-Galactose and $D$-Glucose on hydrolysis. The compound $A$ is:

$A$ non-reducing sugar $A$ hydrolyses to give two reducing monosaccharides. Sugar $A$ is

$A$ polysaccharide '$X$' on boiling with dil $H_2SO_4$ at $393 \ K$ under $2-3 \ atm$ pressure yields '$Y$'. '$Y$' on treatment with bromine water gives gluconic acid. '$X$' contains $\beta-$glycosidic linkages only. Compound '$X$' is ..... .