Carbohydrates.

Question 1

Which organs in human body are mostly dependent on carbohydrates?

Answer 1

Brains and RBCs.

Question 2

Chemistry name of carbohydrates?

Answer 2

Polyhydroxy aldehydes or ketones.

Question 3

From which compound all monosaccharides are derived by successive addition of C atoms?

Answer 3

Glyceraldehyde.

Question 4

Who type of sugar can be metabolised by body?

Answer 4

D-sugars.

Question 5

Presence of asymmetrical C atom leads to?

Answer 5

Optical activity.

Question 6

D and L rotation has no bearing with optical activity. True or False?

Answer 6

True.

Question 7

D glucose is dextrorotatary or levorotatory?

Answer 7

Dextrorotatary.

Question 8

D fructose is dextrorotatary or levorotatory?

Answer 8

Levorotatory.

Question 9

If conformational changes done in C2,C3 and C4 how many types of monosaccharides are formed? How many of them are present in human?

Answer 9

8;3

Question 10

Which 3 are they?

Answer 10

Glucose, Galactose, Mannose.

Question 11

How many diasteriomers are there of aldohexoses?

Answer 11

8.

Question 12

Which monosaccharide is epimerised to glucose in liver to use as fuel?

Answer 12

Galactose.

Question 13

What are the structures called when sugar differ in only single C atom?

Answer 13

Epimers .

Question 14

Glucose and mannose are epimers of each other with respect to which no. C atom?

Answer 14

2.

Question 15

Which monosaccharide is 4 epimer of glucose?

Answer 15

Galactose.

Question 16

Galactose and Mannose are epimers or diasteriomers?

Answer 16

Diasteriomers.

Question 17

What is the constituent of blood sugar?

Answer 17

D glucose.

Question 18

What is the constituent of lactose, glycolipids and glycoproteins?

Answer 18

D galactose.

Question 19

What is the constituent of globulins, mucoproteins and glycoproteins?

Answer 19

Mannose.

Question 20

Glucose is a ?

Answer 20

Aldohexose.

Question 21

Fructose is a ?

Answer 21

Ketohexose.

Question 22

How many isomers fructose have?

Answer 22

4.

Question 23

Each isomer of fructose have D and L form with respect to which no. C atom?

Answer 23

5.

Question 24

Name ring structure of fructose?

Answer 24

Furanose.

Question 25

Fructose is major constituent of which product?

Answer 25

Honey.

Question 26

On which C atom fructose has keto group?

Answer 26

2.

Question 27

What is formed when reducing carbohydrates are mixed with mild alkaline solution?

Answer 27

Enediols.

Question 28

Which products are formed when glucose is kept in mild alkaline solution?

Answer 28

Fructose and Mannose.

Question 29

Which test is done for reducing sugar like glucose?

Answer 29

Benedicts test.

Question 30

What makes benedicts reagent?

Answer 30

Sodium carbonate Sodium citrate Copper sulphate

Question 31

Benedicts test is used as standard test for which disease?

Answer 31

Diabetes mellitus.

Question 32

All reducing sugars+ excess phenyl hydrazine gives ?

Answer 32

Osazones.

Question 33

Needle shaped osazone are of which sugar?

Answer 33

Glucososazone.

Question 34

Sunflower shaped crystals are of which monosaccharide?

Answer 34

Maltosazone.

Question 35

Hedgehog or touch me not plant like crystals are of which monosaccharide?

Answer 35

Lactosazone.

Question 36

Oxidation of sugars. When aldehyde to aldonic acid. Glucose to? Mannose to ? Galactose to ?

Answer 36

Gluconic acid. Mannonic acid. Galactonic acid.

Question 37

When aldehyde is protected and last C atom to carboxylic acid to make uronic acid. Glucose to ? Mannose to ? Galactose to ?

Answer 37

Glucuronic acid. Mannuronic acid. Galacturonic acid.

Question 38

What is used for detoxification?

Answer 38

Glucuronic acid.

Question 39

If first and last C atom are oxidised to dissachrides. Glucose to ? Mannose to ? Galactose to ?

Answer 39

Glucosacchric acid. Mannaric acid. Mucic acid.

Question 40

What is basis of galactose identification?

Answer 40

Mucic acid formation.

Question 41

If monosaccharide are reduced to furfural derivatives in presence of con. H2SO4? Hexose to ? Pentose to ?

Answer 41

Hydroxymethyl furfural. | Furfural.

Question 42

What is base of Molisch test?

Answer 42

Furfural derivatives.

Question 43

What is the general test for carbohydrates?

Answer 43

Molisch test.

Question 44

How many molecules of alcohol are formed on reduction of sugar? Aldose to ? Ketose to ?

Answer 44

Aldose to 1 | Ketose to 2

Question 45

Glucose reduced to form which alcohol?

Answer 45

Sorbitol.

Question 46

Mannose reduced to which alcohol?

Answer 46

Mannitol.

Question 47

Which alcohol reduces intracranial pressure of forced diuresis ?

Answer 47

Mannitol.

Question 48

Which alcohol are formed when these sugar are reduced? Galactose to ? Ribose to ?

Answer 48

Galactose to dulcitol. | Ribose to ribitol.

Question 49

If fructose is reduced to which alcohols?

Answer 49

Sorbitol + Mannitol.

Question 50

Due to osmotic effect created by which alcohol leads to cataract?

Answer 50

Sorbitol and Mannitol.

Question 51

Hemiacetal group of monosaccharide+ alcohol/ phenol= ?

Answer 51

Glycosides.

Question 52

Which compound do not gives benedicts test?

Answer 52

Glycoside.

Question 53

Which glycoside is used for Renal damage?

Answer 53

Phlorhizin.

Question 54

Which glycoside is used as strain?

Answer 54

Plant Indicin.

Question 55

Which glycoside is used as cardiac stimulant?

Answer 55

Digitogenin.