MEDIUM
7th CBSE
IMPORTANT
Earn 100

What is an indicator?

Important Questions on Acids, Bases and Salts

MEDIUM
7th CBSE
IMPORTANT
Name three substances that we use as indicators.
HARD
7th CBSE
IMPORTANT
A few drops of purple cabbage juice are added to the colourless solution of a salt. The resulting solution becomes light purple. What does it indicate about the nature of the salt?
HARD
7th CBSE
IMPORTANT
Does a neutralisation reaction always result in the formation of a neutral salt?
HARD
7th CBSE
IMPORTANT
Why are factory effluents harmful to aquatic organisms?
HARD
7th CBSE
IMPORTANT
You are given three materials In the form of solutions - citric acid, magnesium hydroxide and sodium sulphate. Describe how you will classify the substances as acidic, basic and neutral using purple cabbage solution.
MEDIUM
7th CBSE
IMPORTANT
An acidic substance is mixed with an equivalent amount of a basic substance. What is the reaction called?
MEDIUM
7th CBSE
IMPORTANT
An acidic substance is mixed with an equivalent amount of a basic substance. What are the products formed?
 
EASY
7th CBSE
IMPORTANT
An acidic substance is mixed with an equivalent amount of a basic substance. What is the reaction called?