NCERT PRACTICE QUESTIONS
1. Answer the following questions -
(a) Which kind of garbage is not converted into compost by the red worms?
(b) Have you seen any other organism besides red worms, in your pit? If yes, try to find out their names.
Ans. - a) Plastic bag, electronic waste, tin glass and aluminum foils are not converted by compost by the red worms. b) Earthworms, small insects like ant, millipedes.
2. Discuss -
(a) Is garbage disposal the responsibility only of the government?
(b) Is it possible to reduce the problems relating to disposal of garbage?
Ans. - a) No, it is not just responsibility of the government, but everybody is responsible for garbage disposal. We should collect wet and dry waste separately. b) Yes, it is possible to reduce the problems of garbage by scientific disposal of garbage. Reduce, reuse and recycle are the 3R’s which can make it possible.
3. Answer the following questions -
(a) What do you do with the leftover food at home?
(b) If you and your friends are given the choice of eating in a plastic plate or a banana leaf platter at a party, which one would you prefer and why?
Ans. - a) Preserve them in the refrigerator and use them before they get spoiled. B) Easy to dispose and Environment friendly.
4. Answer the following questions -
(a) Collect pieces of different kinds of paper. Find out which of these can be recycled.
(b) With the help of a lens look at the pieces of paper, you collected for the above question. Do you see any difference in the material of recycled paper and a new sheet of paper?
Ans. - a) All kinds of paper can be used except plastic paper. b) Recycled paper is thick when compared to a new sheet of paper.
5. Discuss -
(a)Collect different kinds of packaging material. What was the purpose for which each one was used?
(b) Give an example in which packaging could have been reduced?
(c) Write a story on how packaging increases the amount of garbage.
Ans. - (a) Different kinds of packaging materials used commonly are: Cardboard – used as shoe, soap, bulb and other boxes. Plastic Bags – Toys covers, sarees bags, shopping bags, etc. Wooden Boxes – Fruit baskets and boxes for hardware. Jute Bags – School bags, shopping bags, vegetable bags, etc.
(b) By reusing the packaging material, we can reduce the accumulation of garbage.
(c) The basic purpose of packaging is to protect the product from tampering and to maintain its freshness and purity. However, most of the packaging material is used to beautify the boxes and make them look attractive on the shelves. Unfortunately, a large volume of packaging material goes waste and is thrown into the dustbin. For example, in most of the places, the dustbins are full of chips and biscuit wrappers.
6. Do you think it is better to use compost instead of chemical fertilizers? Why?
Ans. - Compost is environment friendly as it does not cause any health issues in humans and animals. Compost will not cause pollution. Compost increases soil fertility.Compost is biodegradable.
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