JEE Main 2022 · 28 Jun · Shift 2 · Chemistry Q79

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ChemistrySingle correct+4 / -1Question 79 of 90

When sugar 'X' is boiled with dilute $\mathrm{H_2SO_4}$ in alcoholic solution, two isomers 'A' and 'B' are formed. 'A' on oxidation with $\mathrm{HNO_3}$ yields saccharic acid where as 'B' is laevorotatory. The compound 'X' is :

Maltose

Sucrose

Lactose

Strach

Answer and worked solution

Official answer: B

Sucrose hydrolyses to glucose (A, oxidised by $\mathrm{HNO_3}$ to saccharic acid) and fructose (B, laevorotatory).

(B)

Topics:Carbohydrates

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JEE Main 2022 · 28 Jun · Shift 2, Chemistry question 79