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Air and Water Video Lecture | Science Class 5

FAQs on Air and Water Video Lecture - Science Class 5

1. What are the main components of air?

Ans. The main components of air are nitrogen (approximately 78%), oxygen (around 21%), argon (about 0.93%), and carbon dioxide (approximately 0.04%). There are also trace amounts of other gases, such as neon, helium, and hydrogen.

2. Why is water considered essential for life?

Ans. Water is essential for life because it is a vital solvent in biological processes, helps regulate temperature, and is necessary for chemical reactions in living organisms. It also facilitates the transportation of nutrients and waste products in cells.

3. How do plants use air and water for photosynthesis?

Ans. Plants use air and water for photosynthesis by taking in carbon dioxide (from the air) and water (from the soil) to produce glucose and oxygen. This process occurs in the chloroplasts of plant cells, utilizing sunlight as energy to convert these raw materials into food.

4. What are the different states of water and how do they change?

Ans. Water exists in three main states: solid (ice), liquid (water), and gas (water vapor). These states change through processes such as melting (solid to liquid), freezing (liquid to solid), evaporation (liquid to gas), and condensation (gas to liquid), depending on temperature and pressure conditions.

5. How does air pollution affect water quality?

Ans. Air pollution can affect water quality through the deposition of harmful substances like sulfur dioxide and nitrogen oxides, which can lead to acid rain. This acid rain can harm aquatic ecosystems, reduce biodiversity, and contaminate drinking water sources, impacting both human health and the environment.

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Sep 03, 2025 Last updated

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Class 5 Grade 5

Video Description: Air and Water for Class 5 2025 is part of Science Class 5 preparation. The notes and questions for Air and Water have been prepared according to the Class 5 exam syllabus. Information about Air and Water covers all important topics for Class 5 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Air and Water.

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Video Lecture & Questions for Air and Water Video Lecture | Science Class 5 - Class 5 full syllabus preparation | Free video for Class 5 exam to prepare for Science Class 5.

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Here you can find the meaning of Air and Water defined & explained in the simplest way possible. Besides explaining types of Air and Water theory, EduRev gives you an ample number of questions to practice Air and Water tests, examples and also practice Class 5 tests.

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