Question

For 'invert sugar', the correct statement(s) is(are).
(Given$:$ specific rotations of $(+)$-sucrose, $(+)$-maltose, L-$(-)$-glucose and L-$(+)$-fructose in aqueous solution are $+{66}^o,+{140}^o,-{52}^o$ and $+{92}^o$, 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 $-{20}^o$
• D. On reaction with $B{r}_2$ water, 'invert sugar' forms saccharic acid as one of the products

Answer 1

Answer: (B), (C)

'Invert sugar' is an equimolar mixture of D-$(+)$-glucose and D-$(-)$-fructose
Specific rotation of 'invert sugar' is $-{20}^o$

Sucrose Hydrolysis $\to D(+)-$ glucose[α] $=(-{52}^o)+D(-)$ fructose[α] $=(+{92}^o)$