Why does toothpaste have a base ingredients.

Important Questions on Acids, Bases and Salts

EASY

7th CBSE

IMPORTANT

Galaxy Science in Everyday Life>Chapter 5 - Acids, Bases and Salts>Chapter Review>Q 5

How does milk of magnesia soothe acidity in the stomach?

MEDIUM

7th CBSE

IMPORTANT

Galaxy Science in Everyday Life>Chapter 5 - Acids, Bases and Salts>Chapter Review>Q 1

Differentiate between strong and weak acids.

HARD

7th CBSE

IMPORTANT

Galaxy Science in Everyday Life>Chapter 5 - Acids, Bases and Salts>Chapter Review>Q 2

What are indicators? Name any three indicators and state the colour change which takes place in (i) acids (ii) bases.

HARD

7th CBSE

IMPORTANT

Galaxy Science in Everyday Life>Chapter 5 - Acids, Bases and Salts>Chapter Review>Q 3

Acids neutralise the base to form salt. Are all salts neutral? Give examples to support your answer.

HARD

7th CBSE

IMPORTANT

Galaxy Science in Everyday Life>Chapter 5 - Acids, Bases and Salts>Chapter Review>Q 4

Describe the importance of neutralisation in our day-to day life.

MEDIUM

7th CBSE

IMPORTANT

Galaxy Science in Everyday Life>Chapter 5 - Acids, Bases and Salts>Time to Think>Q 1

You are given three test tubes A, B and C. Each contains some colourless liquid. How would you identify their acidic, basic or neutral nature if you are given phenolphthalein solution as indicator? 

MEDIUM

7th CBSE

IMPORTANT

Galaxy Science in Everyday Life>Chapter 5 - Acids, Bases and Salts>Time to Think>Q 2

Blue litmus does not change its colour in a solution of sodium hydroxide and sulphuric acid. Why?