Login
Login
Sign up
Home
TOP
Send feedback
See more
Terms and Conditions
Privacy Policy
Subjects
Science CBSE Homework Assignments
Class 7
Acids, bases and salts
Litmus paper and colour change
2.
Indicators
Task:
2
m.
1.
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
Pink in acid and yellow in base
Red in acid and blue in base
Yellow in acid and red in base
Yellow in both acid and base
2.
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are
colourless and pink
blue and red
pink and colourless
red and blue
Login
or
Fast registration
Previous task
Exit to the topic
Next task
Send feedback
Did you find an error?
Send it to us!
