A sugar solution was boiled with fehling’s solution A and B and the colour remained blue. The sugar tested was
Glucose
Maltose
Fructose
Sucrose
Lactose
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Discussions (21)
Sorry i tink d answer is perfectly correct.... Fehling solution is used to test for reducing sugars... and all the other options give a positive test except 'sucrose'The disaccharides lactose (milk sugar) and maltose (malt sugar) also have reducing properties. ... Sucrose does not react with Fehling's solution, as this disaccharide of fructose and glucose (2,1 glycosidic linkage) has no free aldehyde or ketone groups. Hence it remains blue instead of changing into brick red or so...
Fehling solution is used to detect reducing sugar but since glucos,maltose,fructose and lactose are reducing sugar nd ther is mo color change. Dis means it indecates non reducing sugar which is only sucrose
Explanation: Fehling solution reacts on all disaccharides except sucrose...
Sucrose is d only disaccharide dat is nt reducing
please can y'all(my school) be providing detailed explanations for your answers?....
Its always showing explanation unavailable
Fehling solution is used to test for reducing sugars. But only glucose will reduce it(change the blue color to brick red). Meaning that the remaining four are correct,hence the question is incorrect
The answer is sucrose because Fehlings solution has no effect on sucrose as the color remainer blue and no precipitate formed
See glucose is an alkanal and fructose is an alkanone, so glucose react with fehling's solution and fructose does not. Isn't fructose the answer?
