Compound A gives D-Galactose and D-Glucose on hydrolysis. The compound A is:
Biomolecules · Class 12 · JEE Main Previous Year Question
Compound A gives and on hydrolysis. The compound A is:
- a
Amylose
- b
Sucrose
- c
Maltose
- d✓
Lactose
Lactose
Step 1: Identifying Monomer Units — Hydrolysis of disaccharides yields their constituent monosaccharide units. Lactose is 'milk sugar'.
Step 2: Lactose Components — Lactose is composed of one and one unit joined by a linkage.
Step 3: Comparison — Maltose yields two glucose units, while sucrose yields one glucose and one fructose unit. Therefore, lactose is the correct compound.
Key Point: Disaccharides are formed through condensation reactions between hemiacetal/hemiketal groups of monosaccharides.
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