Q:
The component of air used by green plants to make their food, is ___________.
A:
The component of air used by green plants to make their food, is carbon dioxide.
Q:
The layer of air around the earth is known as ______.
A:
The layer of air around the earth is known as atmosphere.
Q:
Why does a lump of cotton wool shrink in water?
A:
A lump of cotton wool shrinks in water because when it is immersed in water, air present in it escapes and it reduces in size.
Q:
Which gas in the atmosphere is essential for respiration?
A:
Oxygen is essential for respiration.
Q:
What is the composition of air?
A:
Air is a mixture of nitrogen, oxygen, small amount of carbon dioxide, water vapour and some other gases. Nitrogen constitutes 78% of the air. Oxygen constitutes 21% of the air. Carbon dioxide, water vapour and other gases constitute only 1% of the air.
Q:
How will you show that air is dissolved in water?
A:
To show that air is dissolved in water, take some water in a pan and heat it slowly. Just before the water begins to boil, look carefully at the bottom of the pan. Tiny air bubbles are seen at the bottom of the pan before the water actually boils. These air bubbles come from the air dissolved in water. When we heat the water, air dissolved in it escapes.
Q:
List five activities that are possible due to the presence of air.
A:
Activities that are possible due to the presence of air are:
- Photosynthesis
- Respiration
- Flight of birds, bats and insects
- Movement of sailing yachts, gliders, parachutes and aeroplanes
- Generation of electricity by windmill
Q:
How will you prove that air supports burning?
A:
To prove that air supports burning, we will perform an activity.
To perform this activity, things required are candle, water, container and matchbox.
First of all take a container and fix a candle in the middle of the container. Fill the container with some water. Now, light the candle and then cover it with an inverted container.
After some time, it is observed that candle extinguishes.
Candle extinguishes because the amount of air is limited inside the inverted container. Hence, supply of oxygen is also limited.
Once oxygen is completely consumed, the candle blows off. This proves that oxygen is essential for burning.
Q:
How do plants and animals help each other in the exchange of gases in the atmosphere?
A:
During photosynthesis plants take carbon dioxide from atmosphere and make their own food and oxygen is produced in this process. Plants also consume oxygen during respiration but amount of oxygen released during photosynthesis is more than the amount of oxygen used during respiration. Animals inhale oxygen produced by plants and in turn, carbon dioxide is produced.
In this way, plants and animals help each other in the exchange of gases in the atmosphere.
Benefits of NCERT Solutions
1. They are developed by our experts with the right approach for precisely answering the textbook questions.
2. They are free of cost and available online to help class 6 students.
3. They not only explain every topic but also prepare students for further examinations.
4. They are proven to be helpful to students in their exam preparation, homework and competitive exams.
5. They will help in understanding the solutions and the methodology of writing the answers in the exams.
Tips & Strategies for Class 6 Exam Preparation
2. Study class 6 solutions from Extramarks website.
3. Learn from the best teachers with Extramarks and clear your doubts instantly.
4. While practicing, refer to NCERT Solutions for class 6 to understand step-by-step solutions to all questions.
5. Get concept clarity by tuning in to the Extramarks live classes.
6. Make time for relaxation and sleep well.
Why opt for Extramarks NCERT Class 6 Solutions?
Whenever you are stuck solving a question, have doubts or maybe want a step-by-step solution to any question from the textbook- refer to NCERT Solutions class 6 all subjects by Extramarks. It is proven for helping students learn better and improve their exams in class 6.
NCERT Solutions for class 6 allow students to understand concepts in a simplified manner, and are an irreplaceable support to them. They not only explain every step but also prepare students for further exams. Maths of class 6 is important as a student must understand every concept if he/ she wants to learn maths in senior classes. Hence, NCERT Solutions for class 6 Mathematics is a complete study material and a must-have for every student.
NCERT Solutions for Class 6 Science, Mathematics and other subjects are important as it is the foundation of concepts and formulas. Once you will understand the basic, you will be able to solve complex problems much easily. It also helps to solve your doubts systematically as they are self-explanatory and provide comprehensive solutions to all students.
Yes, the Extramarks website is your one-stop solution for everything you need while studying. Not just class 6 NCERT Solutions, but we also provide solutions for all other classes.
India’s leading learning platform
Get
in touch
Have a query about our services?
Get in touch with us and we will
guide you through a new world of
redefined learning
Already member? LogIn