Biomolecules part2

Question 1

Seliwannof test

Answer 1

sucrose
Fructose(ketohexose)

starts with s ends with f
thus sucrose and fructose

Question 2

Barfoed test

Answer 2

glucose, fructose, ribose, galactose
(monosacharides)
singles go to bar so monosacharides give barfoed

Question 3

Sodium nitroprusside test

Answer 3

ketones

Question 4

buiret test

Answer 4

proteins/peptides

Question 5

pthalic test

Answer 5

phenol

Question 6

phenyl test

Answer 6

protein

Question 7

concHNO3 test

Answer 7

proteins

Question 8

acrolein(KHSO4)

Answer 8

fats and oils

Question 9

leibermann nitroso

Answer 9

phenol and 2deg amine

Question 10

Molisch test

Answer 10

All carbohydrates

Question 11

Bromine water with phenol and aniline

Answer 11

white ppt for both

Question 12

Baeyer’s test for phenol and aniline

Answer 12

no rxn

Question 13

Amylose

Answer 13

Unbranched
C1-C4
(15% starch)

Question 14

Amylopectin

Answer 14

Branched by C1-C6

85% starch

Question 15

Cellulose made of

Answer 15

C1 of beta D glucose and C4 of beta D glucose

Question 16

Vitamin A def

Answer 16

Night blindness

Xeropthalmia(cornea)

Question 17

Vitamin B1

Answer 17

(Thiamine)

Beri Beri

Question 18

Vitamin B12

Answer 18

pernicious anaemia