Why is Government of India imposing a ban on the use of polythene bags? Suggest two alternatives to these bags and explain how this ban is likely to improve the environment.
Why is Government of India imposing a ban on the use of polythene bags? Suggest two alternatives to these bags and explain how this ban is likely to improve the environment.
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**Step 1: Understanding the Issue with Polythene Bags**
The Government of India is imposing a ban on the use of polythene bags primarily due to their harmful environmental impact. Polythene bags are made from polyhydrocarbons, which are long chains of carbon that are difficult to decompose. When these bags are burned, they release toxic gases such as nitrogen oxides, sulfur dioxide, carbon dioxide, and carbon monoxide. These gases contribute to air pollution and can be harmful to human health and the environment.
**Step 2: Environmental Consequences of Polythene Bags**
The accumulation of carbon dioxide in the atmosphere leads to global warming, which causes the melting of glaciers and rising sea levels. Additionally, the chemicals from polythene bags can leach into the soil and water bodies, leading to contamination and adverse health effects in humans and wildlife. This can result in various diseases and ecological imbalances.
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Shyam went to a grocery shop to purchase some food items . The shopkeeper packed all the items in polythene bags and gave them to Shyam . But Shyam refused to accept the polythene bags and asked the shopkeepers to pack the items in papar bags . He informed the shopkeeper about the heavy penalty imposed by the government for using polythene bags . The shopkeeper promised that he would use paper bags in future in place of polythene bags. Answer the following : (a) Write the values (at least two) shown by Shyam . (b) Write one structural difference between low-density polythene and high-density polythene . (c) Why did Shyam refuse to accept the items in polythene bags ?
Once there was heavy downpour for about 3 hours in the early morning. Irfan and his family were finding it difficulat to carry out their daily morning chores as the sewer water was flowing back into the toilits, th road in front of their house was flooded with water and they could not move out. On this very serious problem Irfan called a meeting of all the residents. In the meeting Irfan discussed th problem and said that we as using too much polythene bags and other plastic items which we throw here and there. All these move into the drains and sewer lines which get choked and do not allow flow of water. As these are non-biodegradable, they remain as such for a long time. So to overcome this problem, we should use bags made up of cloth or jute which are biodegradable. (i) Answer the following questions : (i) Name a polymer which is biodegradable. Write the sturctures of monomers and the repeating unit. (ii) Write two uses of this polymer. (iii) Write any two values shown by Irfan.
After the ban on plastic bags, students of one school decided to make the people aware of the harmful effects of plastic bags on environment ans Yamuna River. To make the awareness more implctful, they organized rally by joining hands with other school and distributed paper bags to vegetable vendors, shopkeepers and departmental stores. All students pledged not to use polythene bags in future to save Yamuna River. After reading the above passage, answer the following questions : (i) What values are shown by the students ? (ii) What are biodegradable polymers ? Given one example. (iii) Is polythene a condensation or an addition polymer ?
Seeing the growing cases of diabetes and depression among young children, Mr. Chopra, the principal of one reputed school organized a seminar in which he invited parents and principals. They all resolved this issue by strictly banning junk food in schools and introducing healthy snacks and drinks like soup, lassi, milk, etc. in school canteens. They also decided to make compulsory half an hour of daily physical activities for the students in the morning assembly. After six months, Mr. Chopra conducted the health survey in most of the schools and discovered a tremendous improvement in the health of the students. After reading the above passage, answer the following questions : (i) What are the values (at least two) displayed by Mr. Chopra ? (ii) As a student, how can you spread awareness about this issue ? (iii) Why should antidepressant drugs not be taken without consulting a doctor ? (iv) Give two examples of artificial sweeteners.
Answer question numbers 4(a)-4 (d) on the basis of your understanding of the following paragraph and the related studied concepts: India today is facing the problem of overuse of resources, contamination of water and soil and lack of methods of processing the waste.The time has come for the world to say goodbye to "single-use plastics".steps must be undertaken to develop environment-friendly substitutes, effective plastic waste collection and methods of its disposal. Indore treated 15 lakh metric tonnes of waste in just 3 years,through biomining and bioremediation techniques.Bioremediation involves introducing microbes into landfill to naturally 'break' it down and biomining involves using trommel machines to shift through the waste to separate the 'soil' and the waste component.The city managed to chip away 15 lakh metric tonnes of waste at a cost of around Rs.10 crore.A similar experiment was successfully carried out in Ahmedabad also. (a) State two methods of effective plastic waste collection in your school. (b) Name any two uses of "single-use plastic" in daily life. (c) If we discontinue the use of plastic,how can an environment-friendly substitute be provided? (d) Do you think microbes will work similarly in landfill sites as they work in the laboratory?Justify your answer.
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