Which one of the following statement is not true?
Held on 6 Sept 2020 · Verified 6 Jul 2026.
Lactose contains α−glycosidic linkage between C1 of galactose and C4 of glucose
Lactose is a reducing sugar and it gives Fehling's test.
Lactose (C11H22O11) is a disaccharide and it contains 8 hydroxyl groups.
On acid hydrolysis, lactose gives one molecule of D(+)−glucose and one molecule of D(+)−galactose.
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Consider the following reaction sequence  Compound $(\mathrm{y})$ develops characteristic colour with neutral $\mathrm{FeCl}_{3}$ solution. Identify the INCORRECT statement from the following for the above sequence.
Given below are two statements: Statement I: Benzene is nitrated to give nitrobenzene, which on further treatment with $\mathrm{CH}_{3} \mathrm{COCl} / \mathrm{AlCl}_{3}$ will give  Statement II: $-\mathrm{NO}_{2}$ group is a $m$-directing, and deactivating group. In the light of the above statements, choose the most appropriate answer from the options given below
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Which of the following reactions is an example of Wurtz reaction?
A hydroxy compound $(\mathrm{X})$ with molar mass $122 \mathrm{~g} \mathrm{~mol}^{-1}$ is acetylated with acetic anhydride, using a large excess of the reagent ensuring complete acetylation of all hydroxyl groups. The product obtained has a molar mass of $290 \mathrm{~g} \mathrm{~mol}^{-1}$. The number of hydroxyl groups present in compound (X) is:
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