Table

Question 1

Molisch test

Answer 1

All have presence of carbs

Question 2

Barfoed’s

for?

Answer 2

For presence of monossacharide
Glu, fru, man, gal, = mono

Mal, Lac, Suc, = slow reaction bec. they are disaccharides

Starch = negative bec. it is a polysaccharide

Question 3

Seliwanoff’s

for?

Answer 3

to identify bet. aldose and ketose

Only Fructose and sucrose are ketose

Question 4

Osazone, fehling, benedict

for?

Answer 4

to detect if reducing sugar or not

Only sucrose and starch are non reducing

Question 5

Tollens

for?

Answer 5

to identify bet. aldehyde and ketone

Only sucrose and starch are aldehydes

Question 6

Iodine test

for?

Answer 6

to detect presence of starch

Only starch has starch

Question 7

Bial’s test

for?

Answer 7

to identify presence of pentose

Only fructose is a pentose