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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The school science club has N decided to conduct a poster propaganda for creating awareness about pollution due to plastics. Prepare some posters for this. |
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Answer» Avoid disposable plastic products use glass, ceramic utensils or natural substances Use paper or natural materials fodecorations Don’t dump plastic materials in soil. |
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| 2. |
You know what thermoplastics and thermosetting plastics are.a. Which of these plastics cannot be recycled?b. You might have noticed that those who collect old plastics do not accept certain type of plastic articles. What are they? What may be the reason for this? |
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Answer» a. Thermoplastic b. Thermosetting plastic. Because they can’t be recycled. |
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| 3. |
Natural fibres and synthetic fibres are used in the field of textile manufacturing.a. Compare their merits and demerits and tabulate.b. Which of these clothes is most suited for the following situations? Give reason.i. While cooking in the kitchenii. To wear during summer |
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Answer» a. Merits:
Demerits:
b. Natural fibres:- Because they are not inflammable, have ability to absorb sweat, high aeration
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| 4. |
What suggestions can you propose to realise the concept of ‘plastic waste-free school’? List your findings. |
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Answer» Reduce: Buy only what you need because a better way to reduce waste is by not creating it. Reuse: Instead of throwing out plastic product you no longer think you need, try repurposing them because plastics exist for long time. Eg: use refill in ball pens, use thick plastics which can be reused, reuse the plastic bottle. The banning of plastics below the thickness of 30 micron aims at this. When thickness increases a tendency will arise to use it again. Recycling: Is the process by which the plastics which is rendered useless is heated and subjected to certain processes to produces new materials. Recycling the rate of environmental pollution Refuse: We can avoid the use of plastic when it is not necessary. Avoid thin plastic covers when things are bought. Use cloth bag, paper bag or thick plastic covers which can be used for long time |
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| 5. |
Some argue that plastics are to be completely banned as they cause environmental pollution. What is your view? |
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Answer» No. Without plastic, we cannot manage daily life. Control the use of plastic. avoid disposable plastic products and use thermoplastic materials. |
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| 6. |
List the peculiarities of plastic. |
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Answer» Can mould in any shape, longlasting, insulator, do not conduct heats, not reacting with chemicals and water, will burn. |
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| 7. |
Separate natural and artificial polymer from the list Rubber, wool, Pvc, Bakelite, nylon, rayon cellulose, silk, polythene, polyester |
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