Explain:
(1) Why is sucrose a non reducing sugar?
(2) What is an invert sugar?
What is polymerisation?
Answers
Answer:
1. Glycosidic bond formation is involved in reducing groups of glucose and fructose therefore sucrose is a non reducing sugar.
2. Sucrose is dextrorotatory. When it is hydrolysed, dextrorotatory glucose and laevorotatory fructose is produced. It is observed that laevorotation of fructose is more than dextrorotation of glucose so the mixture obatined becomes laevorotatory. Thus, hydrolysis of sucrose brings about a change in the rotation. So the product is called invwrt sugar.
✔ The large molecules having high molecular mass are called polymers.
☢Since the reducing group of glucose and fructose involve glycosidic bond formation so sucrose is non reducing .
☯A mixture of glucose and fructose obtaained by hydrolysis of sucrose.
☢Polymerisation is a process of addition of many monomer units to obtained a polymer.