CHAPTER11- AIR AROUND US (6TH CLASS )

11.2.What is air made-up of? Page86 Eswarao.M

• Nitrogen, Oxygen, and trace gases
• Methane, Carbon monoxide, and Sulfur dioxide
• Hydrogen, Neon, and Krypton
• Carbon dioxide, Helium, and Argon

11.3. What is the most abundant gas in Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon dioxide

• Argon

11.4. Which gas is responsible for the greenhouse effect?

• Carbon dioxide

• Oxygen

• Nitrogen

• Argon

11.5. What gas do plants use during photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Argon

11.2 What is a water vapour?page86 Rupa.A

• Water vapour is a solid state of water.
• Water vapour is a type of fish.
• Water vapour is the gaseous state of water.
• Water vapour is a form of electricity.

11.9.Composition of Air? Page 92 thanujao

• Krypton
• Nitrogen, Oxygen, Argon, Carbon Dioxide, Neon
• Helium
• Hydrogen

11.4.How is the oxygen in the Atmosphere Replaced? Page94 Ramlaxmi.G

• Through volcanic eruptions releasing oxygen
• Through the process of photosynthesis by plants and phytoplankton.
• By the process of combustion
• Through the decomposition of organic matter

Which gas in the Atmosphere is essential for respirtion ?

• Nitrogen
• Oxygen
• Carbon Dioxide
• Argon

Fig11.12 How does wind mill works? Page94 Leela

• Wind mills work by using geothermal energy to generate power.
• Wind mills work by harnessing the power of water currents.
• Wind mills work by converting solar energy into electricity.
• Wind mills work by converting the kinetic energy of the wind into mechanical power, which can then be used to generate electricity.

Have you never sceen Air? Page84Laxman.Y

• Yes, I have seen Water.
• Yes, I have seen Fire.
• No, I have never seen Air.
• Yes, I have seen Air.