Class 7 – Science Quiz
Chapter: Wastewater Story
Time: 30 Minutes
Total Questions: 30
Description:
This quiz is based on the chapter Wastewater Story. Wastewater is water that has been used in homes, schools, industries, and other places. It contains impurities such as human excreta, food waste, oils, soaps, chemicals, and harmful microorganisms. The chapter explains the need for proper sewage systems and wastewater treatment plants (WWTPs). It includes processes like screening, sedimentation, aeration, and disinfection used to clean wastewater. The quiz also focuses on sanitation, water-borne diseases, conservation of water, and the importance of treating wastewater to protect public health and the environment.
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