EASY
7th CBSE
IMPORTANT
Earn 100

What is the colour of phenolphthalein solution?

Important Questions on Acids, Bases and Salts

EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 6
If a mixture of dilute hydrochloric acid, dilute sodium hydroxide and phenolphthalein appears pink, is the mixture acidic, basic or neutral? Explain your answer.
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 6
To remove pink colour of phenolphthalein, we should add ______.
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 7
What is neutralization?
MEDIUM
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 7
The substance formed during neutralization will have properties of _____.
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 7
Write the equation showing the formation of common salt from the reaction between an acid and a base.
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 8
Why should we use only dilute acids in experiments at school?
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 8
What kinds of injuries and damage can acids and bases cause?
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 8
Give three safety precautions you should take when working with substances like acids and bases.