MEDIUM
7th CBSE
IMPORTANT
Earn 100

What colour does the phenolphthalein indicator turn when added to the base?

78.26% studentsanswered this correctly

Important Questions on Acids, Bases and Salts
MEDIUM
7th CBSE
IMPORTANT
What colour does the turmeric paper indicator turn when added to the base?

MEDIUM
7th CBSE
IMPORTANT
Name one indicator which turns red on adding an acid.

EASY
7th CBSE
IMPORTANT
Name one indicator which turns red on adding a base.

MEDIUM
7th CBSE
IMPORTANT
Nitric acid turns red litmus blue.

MEDIUM
7th CBSE
IMPORTANT
Sodium hydroxide turns blue litmus red.

MEDIUM
7th CBSE
IMPORTANT
Tooth decay is caused by the presence of a base.

MEDIUM
7th CBSE
IMPORTANT
Change of colour in an acid or a base depends on the type of indicator used.

MEDIUM
7th CBSE
IMPORTANT
The indicator is a substance that shows different colours in acidic and basic solutions.
