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 our daily life are plastic bags (polythene bags), water bottles, buckets, mugs, … [Read more...] about Plastics
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 use compost or vermicompost instead of chemical … [Read more...] about Disposal Of Garbage
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 green dustbin? Question 5 Name two … [Read more...] about Garbage
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 uses of air? Question 6 Why are burrows and holes dug deep into soil by the … [Read more...] about Availability of Oxygen to Plants and Animals
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 traffic policeman often wear mask at a crowded … [Read more...] about Carbon Dioxide, Water Vapours and Smoke