Login
Login
Sign up
Start
Mathmania
Teacher tutorials
TOP
Subjects
Bridge Course
Testworks
Subject updates
Ya+
News
Send feedback
See more
Contacts
About Us
Terms and Conditions
Privacy Policy
PDF chapter test
TRY NOW
Subjects
Science CBSE
Class 7 New
Exploring Substances: Acidic, Basic, and Neutral
Pumpa Practice Questions
15.
Red rose indicator
Exercise condition:
1
m.
Read
the questions given below and
select
the correct answer:
Why do rose petals act as an acid-base indicator?
Because they are sweet
Because they are soft
Because they contain anthocyanin pigment which changes colour in different pH
Because they have sugar
Login
or
Fast registration
Previous exercise
Exit to the topic
Next exercise
Send feedback
Did you find an error?
Send it to us!