NCERT Solutions for Class 6 Science Chapter 15 Air Around Us

NCERT Solutions for Class 6 Science Chapter 15 - Air Around Us

Welcome to the Chapter 15 - Air Around Us, Class 6 Science NCERT Solutions page. Here, we provide detailed question answers for Chapter 15 - Air Around Us. The page is designed to help students gain a thorough understanding of the concepts related to natural resources, their classification, and sustainable development.

Our solutions explain each answer in a simple and comprehensive way, making it easier for students to grasp key topics Air Around Us and excel in their exams. By going through these Air Around Us question answers, you can strengthen your foundation and improve your performance in Class 6 Science. Whether you’re revising or preparing for tests, this chapter-wise guide will serve as an invaluable resource.

Exercise 1

Q 1:

What is the composition of air?

Air contains 21% of oxygen, 78% nitrogen, 0.03% carbon dioxide other gases like argon, dust particles, water vapours present in 0.01% quantity. Oxygen gas is very necessary for the respiration of organisms. Oxygen helps in burning; nitrogen gas is present in the large amount but it cannot help in burning process.

Q 2:

Which gas in the atmosphere is essential for respiration?

Oxygen gas is essential for the respiration in the environment or atmosphere. In respiration, oxidation of food is involved. We inhale oxygen and exhales carbon dioxide. If there is no oxygen, there will be no life on the Earth.

Q 3:

How will you prove that air supports burning?

Air supports burning. This can be proved by an experiment.

Take two burning candles.
Put one of the burning candles inside the inverted glass.
After sometime you will see that the candle which is outside, is still burning.
The candle which is below the inverted glass is extinguished because of lack of oxygen there.

This shows that air supports burning process.

Vacuum is a place where air is absent.

Q 4:

How will you show that air is dissolved in water?

A lump of cotton wool shrink in water because cotton wool absorbs water and due to absorption of water the air inside the cotton wool is driven out by water. That’s why cotton wool shrinks in water.

Q 5:

Why does a lump of cotton wool shrink in water?

Air is dissolved in water and this can be showed by an experiment.

Diagram:

Take water in a tumbler or any other utensil.
Heat it, till the vapours appear.
After getting much heat, you will see that the water starts boiling.
Now you can see so many bubbles are there in water.
These all are air bubbles.

This proves that air dissolves in water.

Q 6:

The layer of air around the earth is known as ___________.

Atmosphere

Atmosphere may be defined as the layer of gases which contains oxygen, carbon dioxide, nitrogen and many other gases; dust particles and water vapours that are present around earth.

Q 7:

The component of air used by green plants to make their food, is ___________.

Carbon dioxide

Green plant use carbon dioxide to prepare food for their own, which they get from the environment. Human beings exhales carbon dioxide and which is then is used by plants.

Q 8:

List five activities that are possible due to the presence of air.

The activities which are possible due to the presence of air.

Respiration: Inhalation of oxygen and exhalation of carbon dioxide, this process called respiration which can be done only in the presence of air.
Oxidation: All oxidation processes is proceeded in the presence of air.
Combustion: For combustion oxygen is required which is present in air.
Transpiration: Loss of water occurs due to presence of air.
Evaporation and condensation, flying of birds are some of other activities which are possible only in the presence of air.

Q 9:

How do plants and animals help each other in the exchange of gases in the atmosphere?

Animals breaths out carbon dioxide. This carbon dioxide can be used by plants to prepare their food, this process is called photosynthesis which makes the balance on earth. Animals and plants by exchange of gases help each other to survive.

Frequently Asked Questions about Air Around Us - Class 6 Science

- 1. How many questions are covered in Air Around Us solutions?
- All questions from Air Around Us are covered with detailed step-by-step solutions including exercise questions, additional questions, and examples.
- 2. Are the solutions for Air Around Us helpful for exam preparation?
- Yes, the solutions provide comprehensive explanations that help students understand concepts clearly and prepare effectively for both board and competitive exams.
- 3. Can I find solutions to all exercises in Air Around Us?
- Yes, we provide solutions to all exercises, examples, and additional questions from Air Around Us with detailed explanations.
- 4. How do these solutions help in understanding Air Around Us concepts?
- Our solutions break down complex problems into simple steps, provide clear explanations, and include relevant examples to help students grasp the concepts easily.
- 5. Are there any tips for studying Air Around Us effectively?
- Yes, practice regularly, understand the concepts before memorizing, solve additional problems, and refer to our step-by-step solutions for better understanding.

Exam Preparation Tips for Air Around Us

The Air Around Us is an important chapter of 6 Science. This chapter’s important topics like Air Around Us are often featured in board exams. Practicing the question answers from this chapter will help you rank high in your board exams.

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