Sucrose when boiled with dilute HCl gives two functional isomers X and Y. X gives monocarboxylic acid with bromine water but not Y. The number of --OH groups in cyclic structure of X is
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Glucose in cyclic form has 5 --OH groups; the aldehyde group gets oxidized in reactions with bromine water.
Sucrose hydrolyzes to glucose and fructose. Glucose, being an aldose, reacts with bromine water. In its cyclic structure (pyranose form), glucose contains five hydroxyl (--OH) groups.