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NCERT · Class 4 · EVS

Chapter 13: A River’s Tale

Practice each question, then open the answer or worked solution.

How does Water become Dirty?

12 questions
Q11Written answer

Find out the many different ways of cleaning water at home.

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Worked solution

By adding alum to the clean water, cleaning can be done.

The method of evaporation can be followed in cleaning dirty water.

Q12Written answer

Draw pictures showing any two ways of cleaning the water.

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Worked solution

NCERT Solutions for Class 4 Chapter 13 Image 5

The other picture should be drawn by the students.

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