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

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Important Questions on Acids, Bases and Salts

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)
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 9
Ammonia is found in many household products such as window cleaners. It turns red litmus blue. What is its nature? (Acidic/ Basic)
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 10
Name any two gaseous pollutants which cause acid rain.
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 11
Name two strong acids and two weak acids.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 5 - Acids, Bases and Salts>Very Short Answer Type Questions>Q 12
Name two strong bases and two weak bases.