monosaccharides and disaccharides

Question 1

what is the general formula for carbohydrates

Answer 1

Cn(H2O)n

Question 2

also known as saccharides and carbs

Answer 2

carbohydrates

Question 3

a biomilecule consist of C, H, and O

Answer 3

carbohydrates

Question 4

major food source and key from of energy for most organisms

Answer 4

carbohydrates

Question 5

simplet carbohydrates ; 1 sugar unit

Answer 5

monosaccharides

Question 6

contain only a signle or ketone functional group

Answer 6

monosaccharides

Question 7

properties if a monosaccharides

Answer 7

colorless, crystalline, and sweet taste

Question 8

what are the three test soution use in the experiment

Answer 8

glucose
lactos
sucrose

Question 9

it is also called dextrose and the most abundant organic compound in nature

Answer 9

glucose

Question 10

glucose formula

Answer 10

C6H12O6

Question 11

in medicine, glucose is often called

Answer 11

blood sugar

Question 12

What is the common component found in polysaccharides such as cellulose, starch, and glycogen?

Answer 12

glucose

Question 13

what is the most important disaccharides

Answer 13

sucrose

Question 14

table sugar

Answer 14

sucrose

Question 15

monosaccharides unit of maltose

Answer 15

glucose + glucose

Question 16

monosaccharides unit of sucrose

Answer 16

glucose + fructose

Question 17

monosaccharides unit of lactose

Answer 17

glucose + galactose

Question 18

its properties are non crystalline and water insoluble

Answer 18

polysaccharides

Question 19

general test for carbohydrates

Answer 19

molisch test

Question 20

solution of alpha-naphthol in 95%
ethanol

Answer 20

molisch test

Question 21

purple color ring develops at the interface if a CHO is present

Answer 21

molisch test

Question 22

positive result purple/magenta

Answer 22

schiffs test

Question 23

general test for the presence of aldehydes functional group

Answer 23

schiffs test

Question 24

pararosanilin with sulfurous acid

Answer 24

schiffs test

Question 25

3 oxidizing agent

Answer 25

tollen, fehlin, benedict test

Question 26

when an aldehyde end of glucose is oxidized what is produce

Answer 26

gluconic acid

Question 27

oxidation of aldehyde end of galactose produces

Answer 27

galactonic cid

Question 28

the aldehyde group of an aldose is oxidized under basic conditions to a carboxylate anion

Answer 28

oxidation to aldonic acid

Question 29

reaction with methyl alcohol forming acetals and ketals

Answer 29

glycoside formation

Question 30

aka silver mirror test

Answer 30

tollen test

Question 31

formation of silver mirror

Answer 31

tollens test

Question 32

silver nitrate in water

Answer 32

tollen test

Question 33

oxidizing agent is cupper sulfate (CuSO4)

Answer 33

fehling test

Question 34

hydrated CuSO4

Answer 34

fehlings A

Question 35

rochelle salt in NaOH

Answer 35

fehlings b

Question 36

formation of brick red precipitate

Answer 36

fehlings test

Question 37

orange solution

Answer 37

benedicts test

Question 38

oxidizing agents is cuprous sulfate (CuSO4)

Answer 38

benedicts test

Question 39

light yello/ yellow

Answer 39

nylanders

Question 40

bismuth subnitrate, KOH

Answer 40

nylanders

Question 41

picric acid

Answer 41

picric acid test

Question 42

mahogany red solution

Answer 42

picric acid

Question 43

formation of dark brown solution/ caramel

Answer 43

moores tet

Question 44

strong NaOH

Answer 44

moores test

Question 45

non-reducing sugar

Answer 45

sucrose

Question 46

Which of the following is a characteristic of reducing sugars? A) They do not react with Benedict's reagent. B) They contain a ketone or aldehyde group. C) They are always sweet in taste. D) They are primarily found in fats.

Answer 46

B

Question 47

What chemical test is commonly used to detect the presence of reducing sugars? A) Fehling’s test B) Iodine test C) pH test D) Grignard test

Answer 47

A

Question 48

When a reducing sugar reacts with Benedict’s solution, what color change indicates a positive result? a) Blue to orange b) Red to green c) Yellow to purple d) Clear to cloudy

Answer 48

a

Question 49

In the picric acid test, what color change indicates the presence of reducing sugars?

Answer 49

yellow to red

Question 50

What color change is observed in the Tollen’s test when a reducing sugar is present?

Answer 50

silver mirror

Question 51

Which chemical test is commonly used to detect reducing sugars in a solution using a blue solution that changes to a brick-red precipitate?

Answer 51

fehlings test

Question 52

chemical name for picric acid

Answer 52

2, 4, 6 trinitrophenol