Welcome to ATP Education
ATP Education
18. Wastewater Story Science class 7 in English Medium ncert book solutions topic -3
18. Wastewater Story topic -3 – Complete NCERT Book Solutions for Class 7 Science (English Medium). Get all chapter explanations, extra questions, solved examples and additional practice questions for 18. Wastewater Story topic -3 to help you master concepts and score higher.
18. Wastewater Story Science class 7 in English Medium ncert book solutions topic -3
NCERT Solutions for Class 7 Science play an important role in helping students understand the concepts of the chapter 18. Wastewater Story clearly. This chapter includes the topic topic -3, which is essential from both academic and examination point of view. The solutions provided here are prepared strictly according to the latest NCERT syllabus and follow the guidelines of CBSE to ensure accuracy and relevance. Each question is explained in a simple and student-friendly manner so that learners can grasp the concepts without confusion. These NCERT Solutions are useful for regular study, homework help, and exam preparation. All textbook questions are solved step by step to improve problem-solving skills and conceptual clarity. Students of Class 7 studying Science can use these solutions to revise important topics, understand difficult questions, and practise effectively before examinations. The chapter 18. Wastewater Story is explained in a structured way, making it easier for students to connect the theory with the topic topic -3. By studying these updated NCERT Solutions for Class 7 Science, students can build a strong foundation, boost their confidence, and score better marks in school and board exams.
18. Wastewater Story
topic -3
Additional Question with solution:
Que: Wastewater is fit for human consumption or not. give reason to support your.
Ans: No, because it is dirty and has many diseases causing organisms like cholera, typhoid, etc.
Que: Name two chemicals used to disinfect wastewater.
Ans: Chlorine and ozone.
Que: Special type to toilets has been designed in aeroplanes, name it.
Ans: Vacuum toilets.
Que: Name the toilets used in areas with limited water supply.
Ans: Vermi - processing toilets.
Que: Name the type of toilets which are most suitable for holding an outdoor music festival in a park.
Ans: Chemical toilets.
Que: Name two things that can be made from sludge extracted during treatment of sewage.
Ans: Biogas and manure.
Que: Name two inorganic impurities present in sewage.
Ans: Inorganic impurities present in sewage are nitrates and phosphates.
Que: Mention the use of dried sludge.
Ans: It is used manure, thus returning organic matter and nutrients to the soil.
Que: Mention the use of dried sludge.
Ans: It is used as manure, thus returning organic matter and nutrients to the soil.
Que: In which type of toilets, human excreta is treated by earthworm?
Ans: Vermi - processing toilets.
Que: Give some examples of onsite sewage disposal systems.
Ans: Chemical toilets, septic tanks, composting pits, etc.