Gautam International Senior
Secondary School
Chemistry
(Investigatory Project)
Submitted To- Geeta Chandola Bhatt
Submitted By – Devansh
(PGT Chemistry)
Class - XI
CERTIFICATE
It is hereby to certify that, the original and genuine
investigation work has been carried out to investigate
about the subject matter and the related data collection
and investigation has been completed solely, sincerely
and satisfactorily Devansh CLASS XI, Gautam
International Senior Secondary School, regarding
his project titled
“Turmeric as Indicator”.
Teacher’s signature ___________
Acknowledgement
It would be my utmost pleasure to express my
sincere thanks to My Chemistry Teacher Ms.
Geeta Chandola Bhatt in guiding and providing
a helping hand in this project. Her valuable advice,
support and supervision all through this project
titled “Turmeric as Indicator”, are responsible
for attaining its present form.
Devansh
Class -XI
STATEMENT OF PROBLEM
Turmeric as Indicator
PLACE
Harbanswala , Rishi Vihar(Home)
INTRODUCTION
 Turmeric is an acid base indicator, which changes colour
when the solution turns acidic or basic. Turmeric contains a
chemical called curcumin, which remains yellow in an
acidic or neutral solution, but turns red in a base.
 Turmeric contains a yellow pigment called curcumin that is
yellow at pH 7.4 and orange to red at pH 8.6
 Turmeric is yellow in acid and neutral substances,
but turns bright red with bases
APPARATUS REQUIRED
 PLAIN WHITE PAPER
 GLASS
 WATER
 TURMERIC
 DETERGENT
 VINEGAR
EXPERIMENT SETUP
 First take turmeric and mix in glass and take plane
paper
 Now we will take of tissue paper and dip in turmeric
water
 Now we will take two glass of detergent and vinegar
PROCEDURE
 First take turmeric and mix in glass and take
plane paper
 Now we will take of Handkerchief and dip in
turmeric water
 Here, detergent is basic solution, and
Turmeric is used as natural indicator.
 Turmeric is acidic in natural and it is yellow in
color.
 When we draw on turmeric color paper with
detergent (basic solution)The yellow color
changes to red color due to the
neutralization reaction.
OBSERVATION
1. Here, vinegar is an acidic solution, and
turmeric is used as a natural indicator.
2. Turmeric is acidic in nature and it is
yellow in color.
3. When we draw on turmeric color paper
with vinegar (acidic solution) red color
changes to yellow color
CONCLUSION
 Turmeric is used as a natural indicator.
It is added to the solution to determine
its acidity and basicity. ... When
turmeric paste is added to the basic
solution the yellow color changes to
red color due to the neutralization
reaction
BIBLOGRAPHY
 https://www.vedantu.com/
 https://byjus.com/
 https://www.toppr.com/