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
7.
Acid-base indicator
Exercise condition:
2
m.
Analyse
the questions given below and
identify
the correct answer:
1.
Which of the following is a natural acid-base indicator?
Bromothymol blue
Phenolphthalein
Methyl orange
Litmus
2.
Which one of the following changes blue litmus paper red?
\(NaOH\)
\(Ca(OH)_2\)
\(Na_2CO_3\)
\(HNO_3\)
Login
or
Fast registration
Previous exercise
Exit to the topic
Next exercise
Send feedback
Did you find an error?
Send it to us!