Class 7 Science
Wastewater Story
Question 1.
State whether the given statement is true or false.
Wastewater can be used for human consumption.
Question 2.
Name the toilets used in areas with limited water supply.
Question 3.
Name two inorganic impurities present in sewage.
Question 4.
Sewage contains some organic impurities in it. Name them.
Question 5.
Name two things that can be made from sludge extracted during treatment of sewage.
Question 6.
_________ are the pipes acting as a transport system that carries sewage from point of origin to the point of disposal.
Question 7.
_________ is the process of adding chlorine (chemical) in water to make it safe for drinking.
Question 8.
Sewage also contains some nutrients Comment.
Question 9.
Open drain system is a breeding place for which of the following?
(a) Flies
(b) Mosquitoes
(c) Organisms which cause diseases
(d) All of the above
Question 10.
Sewage is mainly a
(a) liquid waste
(b) solid waste
(c) gaseous waste
(d) mixture of solid and gas
Question 11.
Which of the following method can be used to grow aerobic bacteria in clarified water?
(a) filtration
(b) sewage
(c) aeration
(d) sedimentation
Question 12.
After processing what happens to the activated sludge?
Question 13.
Why should we avoid throwing cooking oils in drains?
Question 14.
_________ is the proper disposal of sewage and garbage away from houses and surrounding areas.
Question 15.
Floating dirt or froth on the surface of wastewater is called __________.
Question 16.
The full form of WWTP is ___________.
Question 17.
State beneficial activity of microbes in sewage disposal.
Question 18.
Vermi-composting toilets use _________ to treat human waste.
Question 19.
The system of a network of pipes used for taking away wastewater from homes or public buildings to the treatment plant is known as
(a) sewers
(b) sewerage
(c) transport system
(d) treatment plant
Question 20.
Chlorine is used in municipal water treatment plant to
(a) change the teste of water
(b) prevent evaporation
(c) kill the harmful microorganisms
(d) prevent sedimentation
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In summary, problem-solving after learning a theoretical concept on CBSE Wastewater Story Class 7 Science is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.
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Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.
All About Daily Practice Problems on Class 7 Science Wastewater Story NCERT Chapter 18
Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 7 Science Wastewater Story NCERT Chapter 18 useful.
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