Wastewater Story NCERT Solutions - Class 7 Science

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NCERT Solutions for Class 7 Science Chapter 18 - Free PDF Download

NCERT Science Chapter 18 Class 7 is a credible source of reference that offers students a brief comprehension of Wastewater Story interestingly and easily. NCERT Solution provide a comprehensive overview of the study sources, inclusive of all the important concepts and topics. Students preparing or revising for their annual examination or intermediate tests should access the NCERT Science Book Class 7 Chapter 18 to comprehend the chapter and gain a concise understanding of all the essential concepts. Students can access the NCERT Class 7 Science Chapter 18 from here and improve their preparation. You can also download NCERT Solutions for Class 7 Maths to help you to revise complete syllabus and score more marks in your examinations.

NCERT Solutions for Class 7 Science Chapter 18 Wastewater Story part-1
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FAQ (Frequently Asked Questions)

Q1. Define Sludge and Explain its Treatment.

Ans. Sludge is a solid waste, which is a result of secondary treatment of Water. The by-product is generally scrapped from the bottom of the Wastewater Treatment Plant using a skimmer and is subjected to clarified Water to lather the product. The Sludge is generally transferred to a tank and undergoes a slow decomposition process with the help of the anaerobic bacteria to produce Biogas. Biogas is usually known as an activated Sludge and you’ll often find it useful as Bio-Manure.

Q2. What is the Connection Between Sanitation and Disease?

Ans. Sanitation is a condition that defines public health and to remain free of diseases. It is necessary to adopt clean and proper methods of disposal of waste and sewage. Sanitation is also inclusive of clean drinking water. The cause of the disease is in an environment that lacks Sanitation. Dirty and stagnant Water is a thriving place for organisms, flies, and mosquitoes, and improper disposal of wastewater and sewage leads to water-borne diseases. Therefore, Sanitation is the ultimate tool that helps make the environment disease-free.

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