Physical properties:
Odour:
Colour:
Aspect:
Reaction with litmus paper:
Chemical propeties:
test observation Comment
Biuret’ s test
No violet colour
The solution is not protein
Molish’s test
Violet ring spread by shaking
General test for carbohyrate. The solution react with sulphuric acid,will form furfural. Then,react with alpha naphtol form violet ring
Iodine’s test
No colour change
So,no absorption on the surface of the solution
Fehling’s test
Reddish colour and precipitate
The solution is reducing sugar
Confirmatory test
Moore’s test
Yellow to brown colour with caramel odour
Aldol condensation polymerisation
Ozazone’s test
Feathery-glucosazone
Rosette-maltosazone
Sunray-lactosazone
Sugar containing free aldehyde and ketose group produce insoluble yellowish,crytal with excess phenyhydrazire.
Conclusion:
The solution is maltose,or lactose, or glucose.
