For 'invert sugar' the correct statement(s) is (are) . Give : specific rotations of (+) -sucrose , (+)- maltose , L-(-) glucose and L-(+) -fructose in aqueous solution are +66^@, +140^@,-52^@ and 92^@, respectively.

For 'invert sugar' the correct statement(s) is (are) . Give : specific

1.	For 'invert sugar' the correct statement(s) is (are) . Give : specific rotations of (+) -sucrose , (+)- maltose , L-(-) glucose and L-(+) -fructose in aqueous solution are +66^@, +140^@,-52^@ and 92^@, respectively.
Answer» invert SUGAR' is prepared by acid catalyzed hydrolysis of maltose invert sugar' is an equimolar mixture of D-`(+)`-glucose and `D-(-)` -fructose SPECIFIC ROTATION of 'invert sugar' is `-20^@` on reaction with `Br-(2)` water , 'invert sugar' forms saccharic acid as one of the products. SOLUTION :Invert sugar is an equimolar mixture of `D-(+)`-glucose and `D-(-)` - fructose. SINCE specific rotations ,i.e., `[alpha]` of `L-(-)` - glucose and `L-(+)`-fructose are `-52^@ and +92^@` respectively. Therefore , `[alpha]` of `D-(+)` -glucose and `D-(-)` - fructose are `+52^@ and -92^@` respectively. `therefore` Specific rotation of invert sugar `=0.5xx[alpha] of D-(+)`-glucose `+0.5xx[alpha_(D)] of D-(-)`-fructose `=0.5(+52)+0.5(-92)=-20^@`.