CHEMISTRY PROJECT REPORT

1. CHEMISTRYPROJECT
On
Determinationofthecontentofcold
Drinks
PROJECT PREPAREDBY:
MAHIMA

2. SESSION: 2015-16
BOARD’SROLLNUMBER–
GITACONVENTSCHOOL
ACKNOWLEDGEMENT
Itwouldbeamyutmostpleasuretoexpressmysincerethanksto
my chemistry teacher Mrs. MANJU IN PROVIDING A HELPING
HAND IN THIS PROJECT. The valuable guidance support and
supervisionallthroughthisprojecttitled“Determinationofthe
Contents of Cold Drinks” are responsible for attaining its
presentform.

3. MAHIMA
XII
CERTIFICATE
Thisisherebytocertifythat,theoriginal and genuineinvestigationwork
has been carried out to investigate about the subject matter and the

4. related data collection and investigation has been completed solely,
sincerely and satisfactorily by MAHIMA OF GITA CONVENT SCHOOL
(FARIDABAD), regarding her project titled “Determination of the
convents ofcoldDrinks.”
Teacher’sSignature

5. AIM
COMPARITIVE STUDY AND QUALITATIVE
ANALYSIS OF DIFFERENT BRANDS OF COLD
DRINKSAVAILABLEIN MARKET

6. CONTENTS
I. Introduction
II. Theory
III. Apparatus
IV. Chemicalsrequired
V. Detectionofph
VI. Testforcarbondioxide
VII. Testforglucose
VIII. Testforphosphate
IX. Testforalcohol

7. X. Testforsucrose
XI. Result
XII. Conclusion
APPARATUS
TESTTUBE
TESTTUBEHOLDER

8. TESTTUBESTAND
STOPWATCH
BEAKER
BURNER
BURNER
PHPAPER
TRIPADSTAND
CHINADish
Wiregange
Waterbath

9. PURPOSE
In Recent Days soft drink brands were put into Various
questions Regarding Their Purity. News Flashed that
they contain harmful pesticide, which arouse interest in
knowing its content because I have been drinking them
foryears.I wanted tobrandsaretrueornot.
Anotherfactwhichinspiredme todothisprojectisthat I
amintouchwithqualitativeanalysis
Whoseknowledgewithotherfactorshelpedmetodoso.

10. INTRODUCTION
The era of cold drinks began in 1952 but the
industrialization in India marked its beginning with
launching of Limca and Gold spot by parley group of
companies. Sincethebeginningof cold drinkswashighly
profitable and luring many multinational companies
launched theirbrandsinIndiaLikePepsiand coke.
Now days, it is observed in general that majority of
people viewed sprite , Miranda and Limca to give feeling

11. of Lightness, While Pepsi and Thumps Upto activate
pulseand brain.
THEORY
Colddrinks of differentbrands arecomposed of alcohol,
carbohydrates, carbon dioxide, phosphate ionsetc. These
Soft drinks give feeling of warmth, lightness and have a tangy taste
which is liked by everyone. Carbon is responsible for the formation of
froth on shakingthe bottle.

12. The carbon dioxide gasisdissolved iswaterto from carbonic acid
which isalso responsible forthetangy taste.
Carbohydrates are the naturally occurring organic compoundsandare
major source of energy to our body. General formula of carbohydrates
iscx(H2O)y.
On thebasis oftheirmolecularsize carbohydrates are classifiedas:-
Monosaccharide, disaccharides and polysaccharides . glucose is a
monosaccharide with formula C6H12 O6. Is occurs in free state in the
ripen grapes in bones and also in many sweet fruits. Is is also present in
human blood to the extent of about 0.1%. sucrose is one of the most
useful disaccharides in our dailylife .It iswidelydistributedin nature in
juices , seed sand also in flowers of many plants. The main source of
sucrose is sugarcane juice which contain 15-20%sucrose andsugarbeet
Which Has about 10-17% sucrose. The molecularformula of sucrose is
C12H22O11. It is produced by a mixture of glucose andfructose . It isnon
-reducing in nature and Where as glucose is reducing . colddrinksare a
bit acidic in nature and their acidity can be measured by finding their
PH value .the P.H values also depend upon the acidic contents such as
cirtric acid andphosphoric acid.

13. TEST FOR SUCROSE
EXPERIMENT
5ml Samples Of each Brand Of cold drinks were taken in
separate china dishes and were heated verystronguntil
changes occur. Black colored residue left confirmed the
presenceofsucroseincolddrinks.
OBSERVATION
SR.NO. NAME OF THE
DRINK
OBSERVATION CONCLUSION
1 COCO COLA BLACK RESIDUE SUCROSEIS
PRESENT
2 SPRITE BLACK RESIDUE SUCROSEIS
PRESENT
3 LIMCA BLACK RESIDUE SUCROSEIS
PRESENT
4 FANTA BLACK RESIDUE SUCROSEIS
PRESENT
INFERENCE

14. All the brands of cold drinks contain sucrose. But amount of sucrose
variesineachbrand ofdrink.Fantacontainshighestamount ofsucrose.
FEHING’SSOLUTIONTEST
Small samplesof cold drinksof different brandsweretakenina test tube
and a few drops of Fehling’s A solution and Fehling’s B solution was
added in equal amount. The test tube was heated in a water bath for 10
minutes. Appearance of brown precipitate confirmed the presence of
glucoseincolddrinks.
OBSERVATION
SR.NO NAME OF THE
DRINK
OBSERVATION CONLUSION
1 COCA COLA REDDISH
BROWN
PRECIPITATE
GLUCOSEIS
PRESENT
2 SPRITE REDDISH
BROWN
PRECIPITATE
GLUCOSEIS
PRESENT
3 LIMCA REDDISH
BROWN
PRECIPITATE
GLUCOSEIS
PRESENT

15. 4 FANTA REDDISH
BROWN
PRECIPITATE
GLUCOSEIS
PRESENT
INFERENCE
All thesamples gavepositivetestfor glucosewithFehling’s(AGB)solutions.
Henceallthecolddrinkscontainglucose.
TESTFORALCOHAL
EXPERIMENT
Small samplesof cold drinksof different brandsweretakenina test tube
and a few drops of Fehling’s A solution and Fehling’s B solution was
added in equal amount. The test tube was heated in a water bath for 10
minutes. Appearance of brown precipitate confirmed the presence of
glucoseincolddrinks.
OBSERVATION
SR.NO NAME OF THE
DRINK
OBSERVATION CONLUSION

16. 1 COCA COLA YELLOW
PRECIPITATE
ALCOHOL IS
PRESENT
2 SPRITE YELLOW
PRECIPITATE
ALCOHOL IS
PRESENT
3 LIMCA YELLOW
PRECIPITATE
ALCOHOL IS
PRESENT
4 FANTA YELLOW
PRECIPITATE
ALCOHOL IS
PRESENT
INFERENCE
All the samples gave positive test for glucose with Fehling’s(A GB)
solutions. Henceallthecolddrinkscontainglucose.
CHEMICALREACTIONINVOLVED
CH3CH2OH+6NAoH CHI3+HCOONa+5NaI+5H2O
RESULT
After conducting tests, it was concluded that the
differentbrandsof cold drinksnamely:
1.Cocacola
2.Sprite

17. 3.Limca
4.Fanta
All contains glucose, alcohol, sucrose, phosphate and
carbon dioxide. All cold drinks are acidic innature.On
comparingthepttvalueof differentbrandscocacolais
the most acidic and limca is least acidic of all the four
brandstaken.
CARBONDIOXIDE
Among the four samples of cold drinks taken, sprite
has the maximum amount of dissolved carbondioxide
and fanta has the minimum amount of dissolved
carbondioxide

18. BJBIJOGRAPHY
LABORATORYMANUALOFCHEMISTERYBY
DINESHCOMPANIONCHEMISTRYBY–S.K
MALHOTRA
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