Number of compounds from the following which will not produce orange red precipitate with Benedict solution is $..............$. Glucose, maltose, sucrose, ribose,$2-$deoxyribose, amylose, lactose.
A$2$
B$4$
C$3$
D$5$
JEE MAIN 2023, Difficult
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A$2$
a Both Amylose and Sucrose does not give Benedict's test.
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A decapeptide (Mol. Wt. $796$) on complete hydrolysis gives glycine (Mol. Wt. $75$), alanine and phenylalanine. Glycine contributes $47.0 \%$ to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is
It is best to carry out reactions with sugars in neutral or acid medium and not in alkaline medium. This is because in alkaline medium sugars undergo one of the following changes