NCERT Solutions for Class 6 Science Chapter 15 Air Around Us In Hindi PDF Download
FAQs on NCERT Solutions for Class 6 Science Hindi Chapter 15 Air Around Us
1. List out the concepts discussed in Chapter 15 of NCERT Solutions for Class 6 Science.
Chapter 15 "Air Around Us" discusses the important information regarding air and its properties. The students find out the definition of air, its composition, and its significance. Through different activities and experiments, students are also taught the various properties of air. They are also given a glimpse of the composition of the atmosphere around us. They are further taught how air is indispensable for sustaining life on earth. The PDFs of these NCERT Solutions can be downloaded from the official website of Vedantu or from the Vedantu app.
2. How will you prove that air supports burning as covered in Chapter 15 of NCERT Solutions for Class 6 Science?
It can be demonstrated through a simple experiment that oxygen supports burning. For this experiment, take two candles and light them up. Cover one candle with an inverted glass tumbler. It is observed that within a short span of time, the candle covered with the tumbler extinguishes on its own while the other one continues to burn. This is because the component of air, which supports combustion, i.e., oxygen is required for the burning of candles.
3. What is the composition of air?
Air consists of various gases and dust particles. The air around us contains around 78% of nitrogen, 21% of oxygen and the remaining 1% consists of a mixture of gases. The air also contains some dust particles and water vapour. In fact, the water vapour present in the air is responsible for the water cycle on earth and in turn, rain.
4. How will you show that air is dissolved in water?
Take an empty bottle. Submerge the mouth of the bottle inside a bucket filled with water. It is noticed that the water doesn’t enter the bottle. However, when the bottle is slightly tilted, the water enters the bottle. This shows that the bottle was not empty at all. It was filled completely with air, which escaped when the bottle was tilted and water could enter the bottle.
5. Why do you think a traffic policeman often wears a mask?
As we have studied in Chapter 15 in Class 6 Science, that air contains several gases along with dust particles and some other pollutants. Since the traffic policeman has to stay amidst regular air pollution emitting out of the cars and other vehicles in the form of smoke, etc., he wears a mask to protect himself from inhaling these pollutants. Wearing masks is a good way of protecting oneself from such pollution.