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NCERT Solutions for Class 3 E.V.S chapter 20 – Drop By Drop
Back Exercise
Page No 133:
Question 1:
❉ From where do the people in Madho’s village fetch water for drinking?
❉ Who fetches water in Madho’s house?
❉ Water collected in the tanka is mostly used for drinking. Why?
❉ Is rainwater collected in your house as well? If yes, how?
❉ Can there be any other method of collecting water ?
Answer:
❉ People in Madho’s village fetch drinking water from a nearby pond.
❉ Madho’s mother and sister fetch water in Madho’s house.
❉ Water in Madho’s village is scarce. The water collected and stored in the tanka is rainwater, which is pure and potable after cleaning. Thus, it is used for drinking.
❉ Disclaimer for the last two parts: The purpose of this section is to make students interactive and to encourage them to observe their surroundings. The answer may vary from student to student, depending upon his/her experience. It is highly recommended that the students prepare the answers on their own.
Page No 135:
Question 1:
Can you think of ways of saving water. Write your suggestions below: __________________ __________________ __________________ __________________ __________________ __________________
Answer:
Disclaimer: This is a sample answer. The answer may vary from student to student, depending upon his/her observation and experience.
We should turn off the tap while brushing.
We should take bath using a bucket rather than a shower.
We should mop the floor instead of washing it.
Water used for mopping the floor can be used to wash cars.
Water used for washing vegetables can be used for watering the plants.
Question 2:
Have you seen water flowing unnecessarily in your home, school or any other place? Where? ___________________________________________________________ ___________________________________________________________
Answer:
Disclaimer: This is a sample answer. The answer may vary from student to student, depending upon his/her observation and experience.
Page No 136:
Question 1:
Draw lines using different colours to show which work will be done after the other so that the same water can be re-used. One example has been given. 
Answer:
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