Air Video Lecture | Social Studies (SST) Class 7 (Old NCERT)
FAQs on Air Video Lecture - Social Studies (SST) Class 7 (Old NCERT)
| 1. What is the importance of air quality? |  |
Ans. Air quality is crucial for human health and the environment. Poor air quality can lead to respiratory diseases, cardiovascular problems, and other health issues. It also affects ecosystems and can contribute to climate change.
| 2. What are the main pollutants found in the air? | |
Ans. The main pollutants include particulate matter (PM), nitrogen dioxide (NO2), sulfur dioxide (SO2), carbon monoxide (CO), ozone (O3), and volatile organic compounds (VOCs). These pollutants can originate from various sources, including vehicles, industrial processes, and natural events.
| 3. How can individuals improve indoor air quality? | |
Ans. Individuals can improve indoor air quality by ensuring proper ventilation, using air purifiers, reducing the use of synthetic fragrances and cleaning products, maintaining humidity levels, and regularly changing air filters in HVAC systems.
| 4. What are the health effects of poor air quality? | |
Ans. Poor air quality can lead to a range of health issues including asthma, bronchitis, heart diseases, and decreased lung function. Long-term exposure can also increase the risk of lung cancer and other serious illnesses.
| 5. How can communities monitor and improve air quality? | |
Ans. Communities can monitor air quality through the use of air quality sensors and reporting systems. To improve air quality, they can implement policies to reduce emissions from transportation and industry, promote public transportation, and increase green spaces.
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Sep 08, 2025
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Video Description: Air for Class 7 2025 is part of Social Studies (SST) Class 7 (Old NCERT) preparation.
The notes and questions for Air have been prepared according to the Class 7 exam syllabus.
Information about Air covers all important topics for Class 7 2025 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Air.
Introduction of Air in English is available as part of our Social Studies (SST) Class 7 (Old NCERT) for Class 7 & Air in
Hindi for Social Studies (SST) Class 7 (Old NCERT) course. Download more important topics related with notes, lectures and mock test series for
Class 7 Exam by signing up for free.
Description
Video Lecture & Questions for Air Video Lecture | Social Studies (SST) Class 7 (Old NCERT) - Class 7 full syllabus preparation | Free video for Class 7 exam to prepare for Social Studies (SST) Class 7 (Old NCERT).
Information about Air
Here you can find the meaning of Air defined & explained in the simplest way possible.
Besides explaining types of Air theory, EduRev gives you an ample number of questions to practice Air tests,
examples and also practice Class 7 tests.
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The content of Air is prepared as per the latest Class 7 syllabus.
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