CBSE Class 7 Science Waste water Set B

Access the latest CBSE Class 7 Science Waste water Set B. We have provided free printable Class 7 Science worksheets in PDF format, specifically designed for Chapter 18 Wastewater Story. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Chapter 18 Wastewater Story Science Practice Worksheet for Class 7

Students should use these Class 7 Science chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Chapter 18 Wastewater Story, to help you prepare for school tests and final examination. Regular practice of these Class 7 Science questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download Class 7 Science Chapter 18 Wastewater Story Worksheet PDF

 

TOPIC: WASTE WATER STORY

 

Q.1.What is sewage?
 
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Q.2. Name some contaminants found in sewage.
 
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Q.3.Give reasons.
 
a) Oil and fats such as cooking oils, solid food remains, plastic bags, toys etc. should never be thrown in a drain.
 
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b) Chemicals such as paints, medicines, insecticides should not be thrown into drains.
 
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c) During the treatment of waste water, air is pumped into it.
 
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d) Untreated human excreta is a health hazard.
 
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Q.4. List the four steps involved in waste water treatment.
 
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Q.5.What do you understand by the term sewerage?
 
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Q.6.What is the use of manholes provided in the sewerage?
 
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Q.7.What is the use of skimmer in a waste-water treatment plant?
 
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Q.8. How is sludge decomposed in a waste-water treatment plant?
 
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Q.9. Name any two chemicals used to disinfect water.
 
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Q.10. Name any four onsite sewage disposal systems suitable for rural areas.
 
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Please click on below link to download CBSE Class 7 Science Waste water Set B

Revision Worksheets for Class 7 Science
CBSE Class 7 Science Revision Worksheet
~ Class 7 Science (Old Chapters)
CBSE Class 7 Science Acid Bases and Salts Worksheet Set A
CBSE Class 7 Science Acid Bases And Salts Worksheet Set B
CBSE Class 7 Science Acid Bases And Salts Worksheet Set C
CBSE Class 7 Science Acid Bases And Salts Worksheet Set D
CBSE Class 7 Science Electric Current and Its Effects Worksheet Set A
CBSE Class 7 Science Electric Current And Its Effects Worksheet Set B
CBSE Class 7 Science Electric Current And Its Effects Worksheet Set C
CBSE Class 7 Science Fibre to fabric Set B
CBSE Class 7 Science Fibre to fabric Set C
CBSE Class 7 Science Fibre to Fabric Worksheet Set A
CBSE Class 7 Science Forests Our Lifeline Worksheet Set A
CBSE Class 7 Science Heat Worksheet Set A
CBSE Class 7 Science Heat Worksheet Set B
CBSE Class 7 Science Heat Worksheet Set C
CBSE Class 7 Science Heat Worksheet Set D
CBSE Class 7 Science Light Worksheet Set A
CBSE Class 7 Science Light Worksheet Set B
CBSE Class 7 Science Light Worksheet Set C
CBSE Class 7 Science Light Worksheet Set D
CBSE Class 7 Science Motion and Time Worksheet Set A
CBSE Class 7 Science motion And Time Worksheet Set B
CBSE Class 7 Science motion And Time Worksheet Set C
CBSE Class 7 Science Nutrition in Animals Worksheet Set A
CBSE Class 7 Science Nutrition in Animals Worksheet Set B
CBSE Class 7 Science Nutrition in Animals Worksheet Set C
CBSE Class 7 Science Nutrition in Animals Worksheet Set D
CBSE Class 7 Science Nutrition in Plants Worksheet Set A
CBSE Class 7 Science Nutrition in Plants Worksheet Set B
CBSE Class 7 Science Nutrition in plants Worksheet Set C
CBSE Class 7 Science Nutrition in plants Worksheet Set D
CBSE Class 7 Science Nutrition in Plants Worksheet Set E
CBSE Class 7 Science Physical And Chemical Change Worksheet Set B
CBSE Class 7 Science Physical And Chemical Change Worksheet Set C
CBSE Class 7 Science Physical and Chemical Changes Worksheet Set A
CBSE Class 7 Science Reproduction in Plants Worksheet Set A
CBSE Class 7 Science Reproduction in plants Worksheet Set B
CBSE Class 7 Science Reproduction in plants Worksheet Set C
CBSE Class 7 Science Respiration in Organisms Worksheet Set A
CBSE Class 7 Science Soil Worksheet Set A
CBSE Class 7 Science Transportation in Animals and Plants Worksheet Set A
CBSE Class 7 Science Transportation in Animals and Plants Worksheet Set B
CBSE Class 7 Science Transportation In Animals And Plants Worksheet Set C
CBSE Class 7 Science Transportation In Animals And Plants Worksheet Set D
CBSE Class 7 Science Waste water Set B
CBSE Class 7 Science Wastewater Story Worksheet Set A
CBSE Class 7 Science Water A Precious Resource Worksheet
CBSE Class 7 Science Water Worksheet Set A
CBSE Class 7 Science Weather Climate and Adaptions of Animals to Climate Worksheet Set A
CBSE Class 7 Science Winds Storms and Cyclones Worksheet Set A
CBSE Class 7 Science Winds Storms And Cyclones Worksheet Set B

Chapter 18 Wastewater Story CBSE Class 7 Science Worksheet

Students can use the Chapter 18 Wastewater Story practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 7 Science. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Chapter 18 Wastewater Story

Our expert team has used the official NCERT book for Class 7 Science to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Science. You can get all this study material for free on studiestoday.com.

Extra Practice for Science

To get the best results in Class 7, students should try the Science MCQ Test for this chapter. We have also provided printable assignments for Class 7 Science on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

Where can I download latest CBSE Practice worksheets for Class 7 Science Chapter 18 Wastewater Story

You can download the CBSE Practice worksheets for Class 7 Science Chapter 18 Wastewater Story for the latest session from StudiesToday.com

Are the Class 7 Science Chapter 18 Wastewater Story Practice worksheets available for the latest session

Yes, the Practice worksheets issued for Chapter 18 Wastewater Story Class 7 Science have been made available here for the latest academic session

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How can I improve my scores by solving questions given in Practice worksheets in Chapter 18 Wastewater Story Class 7 Science

Regular revision of practice worksheets given on studiestoday for Class 7 subject Science Chapter 18 Wastewater Story can help you to score better marks in exams

Are there any websites that offer free Practice test papers for Class 7 Science Chapter 18 Wastewater Story

Yes, studiestoday.com provides all the latest Class 7 Science Chapter 18 Wastewater Story test practice sheets with answers based on the latest books for the current academic session