Question 1 Explain how plastics are a boon as well as a curse? Question 2 What are the various ways to minimise overuse of plastics? Question 3 What are the various ways to reduce the generation of garbage? Plastics : Boon or Curse Some of the things made of plastics which are used by us in […]
Science
Disposal Of Garbage
Question 1 What is meant by composting and vermicomposting? Question 2 What is meant by recycling? How can you recycle paper at home or school? Question 3 What are the various methods of garbage disposal? Describe the landfill method of getting rid of garbage in a city? Question 4 Explain why, it is better to […]
Garbage
Question 1 What is garbage? Give few examples of garbage? Question 2 What will happen is garbage is not removed from our homes and surrounding regularly? Question 3 What is meant by biodegradable garbage and non-biodegradable garbage? Give two examples of each type? Question 4 What type of garbage is collected in blue dustbin and […]
Availability of Oxygen to Plants and Animals
Question 1 How will you show that air is present in a lump of soil? Question 2 How will you show that air is dissolved in water? Question 3 How do plants and animals maintain the balance of oxygen and carbon dioxide gases in air? Question 4 State few uses of windmill? Question 5 State […]
Carbon Dioxide, Water Vapours and Smoke
Question 1 State few properties of Carbon Dioxide gas? Question 2 From where does dust enter into the air? Question 3 Why should we breathe through the nose and not through the mouth? Question 4 What is smoke?How is smoke produced? Question 5 Explain why, tall chimneys are installed in factories? Question 6 Why do […]
Oxygen and Nitrogen
Question 1 State few properties of Nitrogen? Question 2 State few properties of oxygen? Question 3 Why do mountaineers carry oxygen cylinders with them while climbing high mountains? Question 4 How will you show that oxygen or air is necessary for burning? Question 5 Explain why ,if the clothes of a person catches fire accidentally, […]
Composition of Air
Question 1 What is air? State the composition of air? Question 2 Write few properties of air? Question 3 Describe an activity to show that a glass bottle which appears to be empty to us is actually filled with air? Question 4 How will you show that air is a mixture of gases? Question 5 What is […]
Conservation of Water
Question 1 What are the two main techniques of rainwater harvesting? Question 2 How is rain useful to us? Question 3 Why is it essential to conserve water?What are the various ways in which you can conserve water? Question 4 What is meant by rainwater harvesting? Question 5 Describe methods of rain water harvesting ? […]
Water Cycle
Question 1 What happens if it does not rain in a region for a year or more? Question 2 What is the importance of water cycle in nature? Question 3 Describe the water cycle in nature? Question 4 Explain how heavy rain cause flood?What damage is caused by floods? Question 5 What is drought?When does […]
Evaporation, Transpiration and Condensation
Question 1 Define the term evaporation? Question 2 How are clouds formed? Question 3 Why do water drops appear on the outer surface of a glass containing ice-cold water? Question 4 What is transpiration? Question 5 We hang our wet clothes out to dry on a rope.What happens to the water in the clothes? Question […]