If the sweetness value of cane sugar is taken as $10$,then the sweetness value of glucose will be ...... .

$D$-Glucose $\overset{OH^{-}}{\longleftrightarrow} A + B$; $A$ and $B$ are

Sucrose is dextrorotatory,but the mixture obtained after hydrolysis is laevorotatory. Explain.

Sucrose contains which of the following groups?

For 'invert sugar',the correct statement$(s)$ is(are)
(Given: specific rotations of $(+)$-sucrose,$(+)$-maltose,$L-(-)$-glucose and $(+)$-fructose in aqueous solution are $+66^{\circ}, +140^{\circ}, -52^{\circ}$ and $+92^{\circ}$,respectively)
$(A)$ 'invert sugar' is prepared by acid catalyzed hydrolysis of maltose
$(B)$ 'invert sugar' is an equimolar mixture of $D-(+)$-glucose and $D-(-)$-fructose
$(C)$ specific rotation of 'invert sugar' is $-20^{\circ}$
$(D)$ on reaction with $Br_2$ water,'invert sugar' forms saccharic acid as one of the products

Identify the monosaccharide containing only one asymmetric carbon atom in its molecule.