Chemistry Investigatory Project
Chemistry Investigatory Project
Chemistry Investigatory Project
ACKNOWLEDGEMENT
I also thank my parents who gave their ideas and inputs in making this
project. Most of all I thank our school management, for providing us the
facilities and the opportunity to do this project.
This is to certify that Mr VP someshwar (Roll # 21) & Mr. B Kishan (Roll #
21), student of class XII D, of Kola Saraswathi Vaishnav senior secondary
school, has successfully completed research in the below given project
under the heading “study of amount of casein different milk samples”
during the academic session 2022 -2023 under the guidance of Mrs
Revathi
School Stamp
Signature of principal
THEORY
Funnel, Funnel stand, Filter Paper, Glass rod, weight box, Test tubes,
pestle and mortar.
Chemicals required
1. wash the beaker (250 ml) with distilled water and dry it
2. Take 20ML of buffaloes milk in 250ML beaker and find its weight
3. Add 20 mil saturated solution of ammonium sulfate slowly with
stirring. Fat and casein will separate out as precipitates
4. Filter the above solution and transfer the precipitates in another
beaker.
5. Treat the above precipitates with 30ML distilled water. Casein
dissolves forming Milky solution whereas fat remains as such
6. Warm the above content of beaker to 40 to 45 degrees Celsius
on low flame. Now add 1% acidic acid solution dropwise with
steering when casein gets precipitated
7. Filter the precipitated casein and wash with distilled water and
dry it
8. Find the weight of dry precipitate.
9. Repeat the whole experiment with Cows milk & Packaged Milk
Observations
Precautions
www.wikipedia.com
www.encyclopedia.com
www.caseinpro.com
www.sciencejournals.com
www.icar.nic.in
www.zetascience.com
www.scribd.com