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

Important Questions on Acids, Bases and Salts

EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 5
Name one indicator which turns red on adding a base.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 6
Nitric acid turns red litmus blue.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 6
Sodium hydroxide turns blue litmus red.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 6
Tooth decay is caused by the presence of a base.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 6

Change of colour in an acid or a base depends on the type of indicator used.

MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 6
The indicator is a substance that shows different colours in acidic and basic solutions.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 7
Is sodium hydroxide an acid or a base?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 8
What can you say about the nature of a solution which turns blue litmus red? (Basic/ Acidic)