EASY
7th CBSE
IMPORTANT
Earn 100

You have been given two test tubes, one of which contains vinegar and another which contains dilute hydrochloric acid. You have also been given phenolphthalein. Can you find out which is which by using this indicator? Give a reason for your answer.

Important Questions on Acids, Bases and Salts

EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 6
What is the colour of dilute hydrochloric acid?
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 6
What is the colour of dilute sodium hydroxide?
EASY
7th CBSE
IMPORTANT
CONCERT Science 7>Chapter 5 - Acids, Bases and Salts>STEP IN>Q 6
What is the colour of phenolphthalein solution?
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.