Q9 / 90 · JEE Main 2021 (26 Feb Shift 2) · Chemistry

Match List-I with List-II.

List-I List-II
(a) Sucrose (i) β-D-Galactose and β-D-Glucose
(b) Lactose (ii) α-D-Glucose and β-D-Fructose
(c) Maltose (iii) α-D-Glucose and α-D-Glucose

Choose the correct answer from the options given below:

  • A
    a→iii, b→ii, c→i
  • B
    a→iii, b→i, c→ii
  • Correct answer
    C
    a→ii, b→i, c→iii
  • D
    a→i, b→iii, c→ii

Solution

(1) Sucrose →α-D-Glucose and β-D-Fructose

(2) Lactose →β-D-Galactose and β-D-Glucose

(3) Maltose →α-D-Glucose and α-D-Glucose

a→II

b→I

c→III

Sucrose is made up of two monomers α-D-Glucose and β-D-Fructose.

Lactose is made up of two monomers β-D-Galactose and β-D-Glucose.

Hence, the correct answer is option: 'C'.

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