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प्रश्न
Distinguish between.
Man made material and natural material.
अंतर स्पष्ट करें
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उत्तर
| S. No. | Natural materials | Man-made materials |
| 1. | Natural materials are those materials, which occur in nature on their own. | Man-made materials are a type of material that doesn't occur naturally and is made by humans. |
| 2. | They are both renewable and non-renewable in nature. | They are non-renewable in nature. |
| 3. | They help in the economic development of people. | They help in economic as well as social development. |
| 4. | They are eco-friendly. | They are not environmentally friendly. |
| 5. | They are not manufactured in factories. | They are manufactured in factories. |
| 6. | Examples: wood, rock, minerals, water, soil, etc. | Examples: glass, plastic, artificial thread, thermocol, etc. |
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Explain why plastic containers are favoured for storing food.
Explain why the following is made of thermosetting plastics.
Saucepan handles
Give examples to show that plastics are non-corrosive in nature.
Describe an activity to show that thermoplastic is a poor conductor of electricity.
Who is my partner?
| 'A' column | 'B' column |
| a. Lead glass | i. Plates |
| b. Bakelite | ii. Mattresses |
| c. Thermocol | iii. Electric bulb |
| d. Optic glass | iv. Electric switch |
| e. Polypropylene | v. Lens |
Give example of material that can be used again.
Can you replace the following packaging material with those which can be recycled or reused.
Milk packets of polythene.
What are the drawbacks of plastics?
Polycarbonate (PC) plastic contains ______.
Assertion (A): PVC is an unsafe plastic.
Reason (R): Burning PVC releases dioxins, a most toxic chemical.
