Carbohydrates - Positive results

Question 1

Molisch test positive result

Answer 1

purple ring

Question 2

Anthrone test positive result

Answer 2

blue-green color

Question 3

Moore’s test positive result

Answer 3

yellow to orange to brown color, caramel odor

Question 4

Fehling’s test positive result

Answer 4

brick red precipitate

Question 5

Benedict’s test positive result

Answer 5

red orange color

Question 6

Tollen’s test positive result

Answer 6

silver mirror

Question 7

Nylander’s test positive result

Answer 7

black precipitate

Question 8

Phenylhydrazine test positive result

Answer 8

yellow to pale orange osazones

Question 9

Glucose shape of osazone crystals

Answer 9

bundle of grass

Question 10

Mannose shape of osazone crystals

Answer 10

bundle of grass (bloom-like)

Question 11

Fructose shape of osazone crystals

Answer 11

bundle of grass (hay-like)

Question 12

Galactose shape of osazone crystals

Answer 12

needle shape

Question 13

Maltose shape of osazone crystals

Answer 13

sunflower shape

Question 14

Lactose shape of osazone crystals

Answer 14

puff-ball shape

Question 15

Barfoed’s test positive result

Answer 15

red color

Question 16

Bial’s Orcinol test

Answer 16

blue-green solution

Question 17

Mucic acid test positive result

Answer 17

white crystals

Question 18

Seliwanoff’s test positive result

Answer 18

cherry red color

Question 19

Iodine test positive result

Answer 19

blue-black solution

Question 20

Starch - Hydrolysis of starch color reaction

Answer 20

blue-black

Question 21

Amylodextrine - Hydrolysis of starch color reaction

Answer 21

blue-purple

Question 22

Erythrodextrine- Hydrolysis of starch color reaction

Answer 22

red

Question 23

Archodextrine- Hydrolysis of starch color reaction

Answer 23

colorless

Question 24

Maltose- Hydrolysis of starch color reaction

Answer 24

colorless

Question 25

Glucose - Hydrolysis of starch color reaction

Answer 25

colorless