Carb

Question 1

What are non sugars

Answer 1

Polysaccharides

Question 2

General formula for monosaccharide

Answer 2

Cn H2n On

Question 3

Glucose is

Answer 3

Aldohexose

Question 4

Fructose is

Answer 4

Ketohexose

Question 5

Simplest monosaccharide

Answer 5

Triose
Dihydroxyacetone
Glyceraldehyde

Question 6

Monosaccharide without chiral carbon

Answer 6

Dihydroxyacetone

Question 7

What are enantiomers

Answer 7

Non superimposeable images
L and D (hydroxy group) (next to last carbon)

Question 8

Epimers

Answer 8

Differs only at one position (but not anomeric carbon)
Eg Glu and mannose - C2
Glu and galactose- C4

Question 9

Hemiacetal and hemiketals

Answer 9

Hemiacetals- aldehyde react w alc
Hemiketal- ketone react w alc

Question 10

Anomeric carbon

Answer 10

Position of hydroxyl group
Belo- alpha
Above- beta

Question 11

Equilibrium mixture of glu, mutarotation

Answer 11

37% alpha- +112
63% beta - +19

Results - +52.7

Question 12

Carbs have n glycosidic or o glycosidic

Answer 12

O glycosidic

Question 13

Hydrolysis of sucrose

Answer 13

Sucrose- dextrarotatory +66.5
D glu. +52.7
D fructose- -92

Result levorotatory
Therefore hydrolysis of sucrose is known as inversion

Question 14

What is invert sugar

Answer 14

Equimolar mixture of
Glu
Fructose

Question 15

What are reducing sugars and exp

Answer 15

That have free anomeric carbon
Can react w oxidising agent- ferric/cupric
Exp- sucrose, trehalose

Question 16

Test for starch

Answer 16

Iodine